Telecommunications Techniques Corporation interceptor 147 Reference Manual

2 mbit/s and data analyzer

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50-13139-01

Rev. B

2 Mbit/s and Data Analyzer

Reference Manual

APRIL 1995

20400 Observation Drive, Germantown, Maryland 20876

(800) 638-2049 or (301) 353-1550 (MD)

FAX (301) 353-9216

or contact your local distributor

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Summary of Contents for Telecommunications Techniques Corporation interceptor 147

Page 1 50-13139-01 Rev. B 2 Mbit/s and Data Analyzer Reference Manual APRIL 1995 ©1992 Telecommunications Techniques Corporation® 20400 Observation Drive, Germantown, Maryland 20876 (800) 638-2049 or (301) 353-1550 (MD) FAX (301) 353-9216 or contact your local distributor...
Page 2 Specifications, terms, and conditions are subject to change without notice.
Page 3: Table Of Contents
INTERCEPTOR 147 2 Mbit/s and Data Analyzer TABLE OF CONTENTS SECTION PAGE GETTING STARTED ........1-1 INTRODUCING THE INTERCEPTOR 147 ........ 1-1 OPTIONS FOR THE INTERCEPT OR 147 ............ 1-3 WARNINGS ..........1-4 UNPACKING INSTRUCTIONS ....1-4 STANDARD EQUIPMENT AND ACCESSORIES........
Page 4: Section Page
INTERCEPTOR 147 2 Mbit/s and Data Analyzer SECTION PAGE SETUP CATEGORIES ........3-1 OVERVIEW ..........3-1 TEST MODE CATEGORY ..... 3-2 CONFIGURATION CATEGORY .... 3-8 TIMESLOTS CATEGORY ....3-28 ALARM/SIGNAL CATEGORY ....3-34 AUXILIARY CATEGORY...... 3-38 TEST RESULTS ..........4-1 OVERVIEW ..........
Page 5 INTERCEPTOR 147 2 Mbit/s and Data Analyzer 7-3SECTION PAGE ANALOG/DIGITAL TESTING OF A VOICE CHANNEL ........7-6 TROUBLESHOOTING AN NX56 OR NX64 KBIT/S CIRCUIT ......7-8 COMMISSIONING A CUSTOMER’S NX64K SERVICE ........7-12 MONITORING 2048 KBIT/S CIRCUITS FROM DS3 ACCESS POINTS ..... 7-14 PERFORMING A BIT SLIP/ FRAME SLIP TEST .......
Page 6 INTERCEPTOR 147 2 Mbit/s and Data Analyzer APPENDIX PAGE PRINTER / REMOTE ........A-1 DATA COMMUNICATION INTERFACES ..B-1 DATA COMMUNICATION LEADS ..B-1 LEADS USED ON INTERFACES... B-1 PIN ASSIGNMENTS FOR DATA COMMUNICATION INTERFACES..B-2 SIGNAL LEADS FOR DATA COMMUNICATION INTERFACES..
Page 7 INTERCEPTOR 147 2 Mbit/s and Data Analyzer FIGURE PAGE 2-1: INTERCEPTOR 147 (LEFT SIDE) ..2-2 2-2: INTERCEPTOR 147 (RIGHT SIDE) ..2-3 3-1: FORMAT OF THE TIMESLOTS DISPLAY ......3-30 5-1: HISTOGRAM PRINT (GRAPH, GRAPH) ........5-8 HISTOGRAM PRINT (GRAPH, ASCII) ........
Page 8 INTERCEPTOR 147 2 Mbit/s and Data Analyzer FIGURE PAGE LINE STATUS REGISTER GROUP ..C-9 ALARM STATUS REGISTER GROUP ..........C-12 DIVISION OF TEST SECONDS FOR PERFORMANCE ANALYSIS ....D-1 SLIDING WINDOW AFTER 29TH TEST SECOND STILL IN AVAILABLE TIME ............D-3 SLIDING WINDOW AFTER 88TH TEST SECOND STILL IN AVAILABLE TIME ...
Page 9: Getting Started
INTERCEPTOR 147 2 Mbit/s and Data Analyzer GETTING STARTED 1.1 INTRODUCING THE INTERCEPTOR 147 The INTERCEPTOR 147 2 Mbit/s and Data Analyzer is a hand-held, battery-operated digital communications test instrument. It can perform in-service and out-of-service analysis on 2048 kbit/s circuits, 64 (or 56) kbit/s timeslots...
Page 10 INTERCEPTOr 147 2 Mbit/s and Data Analyzer The INTERCEPTOR 147 includes the following key features: • Operates at 2 Mbit/s, Nx64, Mx64, Nx56, Mx56 kbit/s, and Data Communications rates • Measures 2 Mbit/s signal level • Performs digital and VF channel analysis •...
Page 11: Options For The Intercept Or 147
INTERCEPTOR 147 2 Mbit/s and Data Analyzer • Testing 64 (or 56) kbit/s, Nx64, or Mx64 kbit/s paths through digital cross-connect systems (DCS) • Commissioning new fractional 2048 kbit/s services • Out-of-service testing of 2 Mbit/s circuits by using ISDN NTPM and LEPM (Sa6) loop codes •...
Page 12: 1.3 Warnings
INTERCEPTOr 147 2 Mbit/s and Data Analyzer 1.3 WARNINGS Here is some important information to keep in mind as you use the test instrument. Do not remove the test instrument’s cover WARNING: when power is applied. Do not operate the test instrument in an...
Page 13: Standard Equipment And Accessories
INTERCEPTOR 147 2 Mbit/s and Data Analyzer STANDARD EQUIPMENT AND ACCESSORIES The following standard equipment comes with every INTERCEPTOR 147. • AC Mains power adapter • Printer/Remote Control cable • INTERCEPTOR 147 Reference Manual. POWERING THE INTERCEPTOR 147 The test instrument is equipped with an internal, sealed, lead-acid battery.
Page 14: Initial Check-Out Procedure
Section 2, Instrument Description. Perform the following check-out procedure as soon as possible after unpacking the test instrument. Press POWER to turn on the INTERCEPTOR 147 Verify that the following steps occur. • The Liquid Crystal Display (LCD) performs its power-on test for about 2 seconds.
Page 15 INTERCEPTOR 147 2 Mbit/s and Data Analyzer Select the CONFIGURATION setup category Press SETUP to select the CONFIGURATION setup category. In the top line of the display, verify Transmitter is set to ON. Set Framing to MFAS-CRC Press the CURSOR down control to move the cursor under the current Framing selection (at this point it should be AUTO).
Page 16: Basic Setup Procedure
INTERCEPTOr 147 2 Mbit/s and Data Analyzer Initiate continuous error rate Hold down ERROR INSERT until the ERROR INSERT LED illuminates. The Bit Errs and CRC Errs results should begin to increment. Select the LOGIC & TIME Results category Press RESTART to clear all results After two seconds, verify the display shows BER: 1.00 E-03 .
Page 17 INTERCEPTOR 147 2 Mbit/s and Data Analyzer Configure the 147 for the test Use the SETUP categories to configure the INTERCEPTOR 147 for the test you want to perform. The SETUP categories and the items within each category are arranged in a logical order, so you can proceed from top to bottom to properly set up a test.
Page 18 INTERCEPTOr 147 2 Mbit/s and Data Analyzer Connect the 147 to the circuit Connect the circuit under test to the test instrument’s RECEIVER and TRANSMITTER as applicable. Press RESTART to begin a test To restart (that is, start a new test), press RESTART.
Page 19: Instrument Description
INTERCEPTOR 147 2 Mbit/s and Data Analyzer INSTRUMENT DESCRIPTION OVERVIEW The front panel of the INTERCEPTOR 147 is designed so that it is easy to use. Associated items are grouped together; items are clearly labeled; and LEDs illuminate so that you can see at a glance the status of the circuit under test.
Page 20: Interceptor 147 (Left Side)
INTERCEPTOR 147 2 Mbit/s and Data Analyzer TRANSMITTER 120 Ω 75 Ω SELF LOOP ERROR INSERT 2M TX POWER OFF STATUS DATA INTERFACE EXTERNAL CLOCK TRANSMIT RECEIVE 2M REF 64K G.703 V.35 X.21 75 Ω V.11 V.24 DATA INTERFACE EMULATE...
Page 21: Interceptor 147 (Right Side)
INTERCEPTOR 147 2 Mbit/s and Data Analyzer RECEIVER STATUS & ALARMS SIGNAL FAS SYNC 120 Ω 75 Ω MFAS SYNC PATTERN SYNC 75 Ω TERM PATTERN INVERT 120 Ω BRIDGE CRC-4 OCTET TIMING RESTART BATTERY TS-16 AIS FAS DISTANT MFAS DISTANT...
Page 22: Transmitter
75 The TRANSMITTER connectors are used to connect the INTERCEPTOR 147 to the circuit or equipment under test so that you can transmit a 2048 kbit/s signal. Use the 120 Ω 3-pin Siemens connector to connect to balanced 2 Mbit/s interfaces.
Page 23: Status Data Interface
INTERCEPTOR 147 2 Mbit/s and Data Analyzer ERROR INSERT ERROR INSERT is used to generate and insert errors into the transmitted signal. (For information regarding the type of error that is inserted, see the Error Type item in the AUXILIARY setup category.) To insert a single error, press ERROR INSERT once.
Page 24 INTERCEPTOR 147 2 Mbit/s and Data Analyzer Monitoring a 2 Mbit/s Circuit In this example, you are STATUS DATA INTERFACE monitoring a 2 Mbit/s circuit. Since TRANSMIT RECEIVE it is not needed, the Transmitter is 64K G.703 off. V.35 X.21 V.11...
Page 25: External Clock
INTERCEPTOR 147 2 Mbit/s and Data Analyzer EXTERNAL CLOCK The EXTERNAL CLOCK connector is a 75Ω BNC unbalanced connector (or an optional 1.6/5.6 mm connector) that is used to connect the test instrument to an external clock source. When the external clock source is selected, transmit timing is provided by the source that you connect to the test instrument.
Page 26: Data Interface Connectors
INTERCEPTOR 147 2 Mbit/s and Data Analyzer In this example, the INTERCEPTOR 147 is replacing a DTE, and (since a V.35 interface is being tested) is currently receiving a CTS signal (also known as CCITT data lead 106) from the DCE.
Page 27 INTERCEPTOR 147 2 Mbit/s and Data Analyzer Table 2-1 Data Interface Cables Interface Emulating Use this cable: V.24 Standard V.24 DTE cable (such as TTC’s model 10213 cable). V.24 TTC’s V.24 DCE crossover cable (model 31365) X.21 Standard X.21 DTE cable (such as TTC’s model 31271...
Page 28: Status & Alarms
INTERCEPTOR 147 2 Mbit/s and Data Analyzer STATUS & ALARMS The STATUS & ALARMS section provides immediate and easy-to-see information regarding the status of the received signal (see Figure 2-3). The colors used for the current and history LEDs help to quickly identify conditions.
Page 29 INTERCEPTOR 147 2 Mbit/s and Data Analyzer History LED off, and current LED on. The condition is detected now and has been detected continuously since it was first detected during this test period. Indicates a current condition. History LED on, and current LED off.
Page 30 INTERCEPTOR 147 2 Mbit/s and Data Analyzer MFAS SYNC The MFAS SYNC LED illuminates when the test instrument achieves Multiframe Alignment Signal (MFAS) synchronization. PATTERN SYNC The PATTERN SYNC LED illuminates when the test instrument achieves pattern synchronization. PATTERN INVERT...
Page 31: Receiver
INTERCEPTOR 147 2 Mbit/s and Data Analyzer MFAS DISTANT The MFAS DISTANT (Multiframe Alignment Signal Distant alarm) LED illuminates when the 2 Mbit/s receiver detects an MFAS Distant alarm. An MFAS Distant alarm indicates that the distant end has lost multiframe synchronization.
Page 32 INTERCEPTOR 147 2 Mbit/s and Data Analyzer 2.8.1 Receiver Connectors When you connect the test instrument to the 2 Mbit/s signal under test, use the appropriate connector as described below. Ω Connector When you are testing a balanced circuit, use a three- pronged Siemens connector cable to connect the test instrument (using the 120Ω...
Page 33 INTERCEPTOR 147 2 Mbit/s and Data Analyzer The following diagram illustrates a typical Monitor mode application. INTERCEPTOR 147 2.048 Mbit/s Link Digital Network 2.048 Mbit/s Line Section 2.048 Mbit/s Interface TERM (Terminate) Use TERM (Terminate) mode to terminate the circuit at the test instrument (such as when you are performing out- of-service tests on a 2.048 Mbit/s link at G.703-compatible...
Page 34: Miscellaneous Controls And Leds
INTERCEPTOR 147 2 Mbit/s and Data Analyzer Terminate mode also provides automatic cable equalization (such as when you are testing on the network, or line, side of multiplexers, NTE, or NTUs), as illustrated below. BRIDGE Use BRIDGE mode to monitor a 2 Mbit/s signal (such as...
Page 35 INTERCEPTOR 147 2 Mbit/s and Data Analyzer If the battery is low when you turn the power on, the following message appears: BATTERY LOW! If the battery power is too low, the test instrument will not power on until you connect it to an AC Mains power source or until the battery has been recharged.
Page 36: Display, Scroll, Cursor, Select
INTERCEPTOR 147 2 Mbit/s and Data Analyzer 2.10 DISPLAY, SCROLL, CURSOR, SELECT The liquid crystal display (LCD) shows either the setup configuration or test results, depending on whether you most recently pressed SETUP or RESULTS. The display can show one page, or four lines, of a category list at a time.
Page 37: 2.11 Setup
INTERCEPTOR 147 2 Mbit/s and Data Analyzer 2.11 SETUP Press SETUP to select one of the SETUP categories. The LED next to the selected SETUP category illuminates. Repeatedly press SETUP to scroll from one SETUP category to the next. TEST MODE...
Page 38: Volume Controls And Speaker
INTERCEPTOR 147 2 Mbit/s and Data Analyzer 2.13 VOLUME CONTROLS AND SPEAKER The VOLUME controls are used to control the volume level of the integrated speaker. The integrated speaker is used to monitor a voice channel. (You can specify the...
Page 39: 2.14 Printer Controls
If a printer is connected properly, the Print is printed. If a printer is not connected, the Print is stored in the Print Buffer. (For more information about Controls Prints, see Section 5, Using a Printer.) 2.15 POWER Press POWER to turn the INTERCEPTOR 147 power on or off. 2-21...
Page 40: Top Panel Of The Test Instrument
INTERCEPTOR 147 2 Mbit/s and Data Analyzer 2.16 TOP PANEL OF THE TEST INSTRUMENT The top panel of the test instrument includes the LED and two connectors that are described following the figure. 9V DC PRINTER/ REMOTE CONTROL 1A REG...
Page 41 PRINTER / REMOTE CONTROL Connector Use the PRINTER / REMOTE CONTROL adapter cable to connect the INTERCEPTOR 147 to a printer or to a remote controller. To use a printer or remote controller, connect one end of the Printer/Remote Control cable into the PRINTER / REMOTE CONTROL connector, and plug the other end into the printer or remote controller.
Page 42 INTERCEPTOR 147 2 Mbit/s and Data Analyzer 2-24...
Page 43: Setup Categories
INTERCEPTOR 147 2 Mbit/s and Data Analyzer SETUP CATEGORIES OVERVIEW Use the INTERCEPTOR 147 SETUP categories to set up the test instrument for the test you want to perform. There are five SETUP categories: TEST MODE, CONFIGURATION, TIMESLOTS, ALARM/SIGNAL, and AUXILIARY. The SETUP categories, and the items within each category, are arranged in a logical order so you can proceed from top to bottom to properly set up a test.
Page 44: Test Mode Category
INTERCEPTOR 147 2 Mbit/s and Data Analyzer TEST MODE CATEGORY Use the TEST MODE category to specify the type of test you want to perform. To set up the items in the TEST MODE category, press SETUP until the TEST MODE LED illuminates.
Page 45 INTERCEPTOR 147 2 Mbit/s and Data Analyzer 3.2.1 Test Use the Test item to specify the type of test you want to perform. The following Test selections are available. Select 2M for tests on a 2 Mbit/s (or Nx64 kbit/s) circuit.
Page 46 INTERCEPTOR 147 2 Mbit/s and Data Analyzer VOICE* Select VOICE to perform analog (level and frequency), or channel-associated, signaling tests on any PCM-encoded voice channel carried on a selected 64 (or 56) kbit/s timeslot in a 2 Mbit/s link. When Test Mode is set to VOICE, the speaker is activated so that the traffic or a test tone on the selected timeslot can be monitored.
Page 47: Understanding
INTERCEPTOR 147 2 Mbit/s and Data Analyzer UNDERSTANDING NORMAL AND RESTRICTED OPERATION: 2.048 Mbit/s channels are made up of individual channels that operate at 64 kbit/s (normal operation) or 56 kbit/s (restricted operation, found mainly in circuits originating from the USA). In either case, each channel is created by sampling a signal (such as a telephone conversation) at a rate of 8,000 times per second.
Page 48 INTERCEPTOR 147 2 Mbit/s and Data Analyzer The following selections are available for TX → RX. 2M → DATA Select 2M → DATA to test a demultiplexer (transmit on a 2 Mbit/s interface and receive the signal at a data interface).
Page 49 INTERCEPTOR 147 2 Mbit/s and Data Analyzer 3.2.6 2M The 2M item is used to specify the channel type to be tested on the 2 Mbit/s side of a MUX test. The following 2M selections are available. Select 64K to perform tests on an individual 64 kbit/s timeslot* in a 2 Mbit/s link.
Page 50: Configuration Category
INTERCEPTOR 147 2 Mbit/s and Data Analyzer CONFIGURATION CATEGORY The CONFIGURATION category is used to configure key items associated with the transmitter and receiver. To set up the items in the CONFIGURATION category, press SETUP one or more times until the LED for the CONFIGURATION setup category illuminates.
Page 51 INTERCEPTOR 147 2 Mbit/s and Data Analyzer Table 3-2 CONFIGURATION Category (Continued) Item Available Selections TS Idle An 8-bit word that can be edited bit-by-bit. (See the text for details.) Loopcodes OFF, SA6BITS, or CBITS Sa6bits IDLE, 2M NTPM, 2M LEPM, or...
Page 52 INTERCEPTOR 147 2 Mbit/s and Data Analyzer Table 3-2 CONFIGURATION Category (Continued) Item Available Selections Synth Rate 50 to 2,048,000 bps in 1 bps steps Rcv Clk Sel ST or TT Send Clk Pol NORM or INV Rcv Clk Pol NORM or INV V.24A Parity...
Page 53 INTERCEPTOR 147 2 Mbit/s and Data Analyzer 3.3.1 Transmitter Use the Transmitter item to switch the 2 Mbit/s Transmitter power on or off. The following selections are available for Transmitter. 2M Transmitter is powered on. 2M Transmitter is not powered (and the 2M TX POWER OFF LED illuminates).
Page 54 INTERCEPTOR 147 2 Mbit/s and Data Analyzer When Thru Mode is set to OFF, an idle pattern (see “TS Idle”) is transmitted on the unselected timeslots. This selection is generally used for out-of-service testing or Fractional testing when the unselected timeslots are unused or not important.
Page 55 INTERCEPTOR 147 2 Mbit/s and Data Analyzer UNFRAMED Configures the test instrument to operate in an unframed mode. An unframed 2 Mbit/s signal contains no frame alignment or other overhead bits. Unframed test patterns are often used to perform out-of-service tests on 2 Mbit/s lines.
Page 56 INTERCEPTOR 147 2 Mbit/s and Data Analyzer MFAS-CRC Configures the test instrument to operate using the MFAS-CRC framing format. This format is identical to the MFAS format, except that a 4-bit cyclic redundancy check (CRC-4) code is included in the first bit of timeslot 0 in even-numbered frames.
Page 57 INTERCEPTOR 147 2 Mbit/s and Data Analyzer INT 2048K The INTERNAL selection (see above) appears as “INT 2048K” when Option 147-1 is installed. RECOVERED The Transmitter clock is recovered from the receive signal. Thus, the transmitter frequency is equal to the frequency of the received 2 Mbit/s signal.
Page 58 INTERCEPTOR 147 2 Mbit/s and Data Analyzer Monitor. Derives the 2M Reference from a resistor- isolated source. This selection provides a 75Ω input impedance for the 2M Ref Input signal. BRIDGE Derives the 2M Reference from a source not equipped with resistor-isolated monitor points.
Page 59 INTERCEPTOR 147 2 Mbit/s and Data Analyzer 3.3.9 Loopcodes Use the Loopcodes item to specify the loop code type, if any, to be transmitted. The loop codes are applicable in the 2M framed, 2M Voice, 2M Nx64k/56k, 2M Mx64k/56k, and 2M 64k/56k setup when the 2M Transmitter is ON.
Page 60 INTERCEPTOR 147 2 Mbit/s and Data Analyzer 2M PROG Selects the user-programmed Sa6 four-bit loop code (see Section 3.3.11 2M PROG). There are only six unique loop code combinations (0000, 0001, 0011, 1010, 1110, and 1111). 3.3.11 2M PROG Sets the four-bit Sa6 programmable loop code. Since...
Page 61 INTERCEPTOR 147 2 Mbit/s and Data Analyzer Bit Function Description Loop 2 Command Bit 6 = 0 + Bit 4 = 1 Network origin Loop 2 Command Bit 6 = 0 + Bit 4 = 0 Customer origin Loop 2 Command...
Page 62 INTERCEPTOR 147 2 Mbit/s and Data Analyzer 3.3.15 CBIT MODE Use the CBIT MODE item to select the C-Bit transmit mode. The following selections are available for CBIT MODE as indicated. EDIT Lets you edit the C-Bits without changing the transmitted signal.
Page 63 INTERCEPTOR 147 2 Mbit/s and Data Analyzer lost, the test instrument does not re-initiate the auto- sync process. Instead, the test instrument indicates loss of pattern sync and attempts to reacquire pattern sync using the pattern that was detected when auto- sync was initally achieved.
Page 64 INTERCEPTOR 147 2 Mbit/s and Data Analyzer 2^20-1 1,048,575-bit pseudorandom pattern with a maximum of 19 sequential zeros and 20 sequential ones (as described in CCITT Recommendation V.57). 2^23-1 8,388,607-bit pseudorandom pattern with a maximum of 22 sequential zeros and 23 sequential ones (as described in CCITT Recommendation O.151).
Page 65 INTERCEPTOR 147 2 Mbit/s and Data Analyzer 3.3.17 Program Pattern Use the Program Pattern item to specify the 1- to 24-bit programmable test pattern to be transmitted in all selected timeslots when Pattern is set to PRGM. (For information about selecting timeslots, see the TIMESLOTS category.)
Page 66 7 leftmost bits of the TS Byte. 3.3.19 Emulate Use the Emulate item to specify whether the INTERCEPTOR 147 will act as the DTE (Data Terminal Equipment) or the DCE (Data Circuit-terminating Equipment). Select DTE when the INTERCEPTOR 147 is replacing a piece of Data Terminal Equipment (DTE), such as a terminal or a host computer.
Page 67 INTERCEPTOR 147 2 Mbit/s and Data Analyzer 38.4K, 48K, 56K, 64K, 128K, 256K, 384K, 512K, 1024K, 1536K, 1984K, 2048K. In addition, the Rate item can be set to SYNTH, which allows the use of a rate synthesizer. When Intf is set to V.24 ASYNC, only rates from 300 bit/s to 19.2 kbit/s are available.
Page 68 INTERCEPTOR 147 2 Mbit/s and Data Analyzer 3.3.23 Send Clk Pol Use the Send Clk Pol (Send Clock Polarity) item to select the polarity of the clock to be used to clock valid transmit data. For a diagram of the interface leads that are used, see Appendix B.
Page 69 INTERCEPTOR 147 2 Mbit/s and Data Analyzer 3.3.26 V.24A Data Bits Use the V.24A Data Bits item to select the number of data bits (5, 6, 7, or 8) per character on a V.24 asynchronous interface. 3.3.27 V.24A Stop Bits Use V.24A Stop Bits item to select the number of stop bits...
Page 70: Timeslots Category
INTERCEPTOR 147 2 Mbit/s and Data Analyzer The format of the Data Lead item is shown below. Data Lead The following Data Leads can be set, as appropriate for the given interface and configuration: RTS, LL, RL, DTR, CTS, TM, RLSD, DSR, RS, CS, TR, RR, or DM. Each lead can be set ON or OFF.
Page 71: Timeslots Category
INTERCEPTOR 147 2 Mbit/s and Data Analyzer For an overview of the items available in the TIMESLOTS category, see Table 3-3. Table 3-3 TIMESLOTS Category Item Available Selections Graphical depiction of the timeslots for the transmit and receive sides. (See the text for an explanation.)
Page 72: Format Of The Timeslots Display
INTERCEPTOR 147 2 Mbit/s and Data Analyzer Timeslot Number When Tx = Rx: Total Bandwidth (Rate) 2-page display of Selected Timeslots TS 30 Rate Timeslots 0-15 F ....
Page 73 INTERCEPTOR 147 2 Mbit/s and Data Analyzer Selecting a Single Timeslot To select a single timeslot for testing (that is, when Test Mode is set to VOICE or 64K, or when 2M is set to 64K or 56K), use the procedure described below Move the cursor to the Timeslot Number.
Page 74 INTERCEPTOR 147 2 Mbit/s and Data Analyzer 3.4.1 TS (Timeslots Page) When you want to select the same timeslot(s) on the transmit and receive sides, use the TS (Timeslot) page to select the timeslot(s) you want to test. (The TS page is available only when Coupling is set to Tx=Rx.)
Page 75 INTERCEPTOR 147 2 Mbit/s and Data Analyzer 3.4.4 Coupling Use the Coupling item to indicate whether or not you want to select the same timeslots on the transmit and receive sides. The Coupling selection can be changed at any time.
Page 76: Alarm/Signal Category
INTERCEPTOR 147 2 Mbit/s and Data Analyzer ALARM/SIGNAL CATEGORY The ALARM/SIGNAL category is used to transmit alarms on or off, and to configure overhead bits. The ALARM/ SIGNAL category is available when transmitting a 2 Mbit/s signal. For an overview of the ALARM/SIGNAL category, see the table below.
Page 77 INTERCEPTOR 147 2 Mbit/s and Data Analyzer The format of the Tx Alarm item is shown below. Tx Alarm The following alarms can be set: AIS, FAS, or MFAS. Each alarm can be set ON or OFF. AIS (ON/OFF) AIS (Alarm Indication Signal). When Tx Alarm is set to AIS ON, the transmitter transmits unframed all 1’s.
Page 78 INTERCEPTOR 147 2 Mbit/s and Data Analyzer Bit position 1 can also be edited if Framing is set to FAS or MFAS. However, when Framing is set to FAS-CRC or MFAS-CRC, an uppercase “C” is displayed in bit position 1 and cannot be edited. The “C” indicates that this bit is used to send CRC-4 error detection codes.
Page 79 INTERCEPTOR 147 2 Mbit/s and Data Analyzer 3.5.4 Tx ABCD Use the Tx ABCD item to set the four signaling bits associated with the selected voice channel. The format of the Tx ABCD item is: Tx ABCD XXXX where XXXX represents the four signaling bits. To set the signaling bits, move the cursor to the bit you want to change, and press SELECT.
Page 80: Auxiliary Category
INTERCEPTOR 147 2 Mbit/s and Data Analyzer AUXILIARY CATEGORY The AUXILIARY category is used to set up a variety of items, including items regarding printing capabilities and the current time and date. For an overview of the category, see Table 3-5. Descriptions of the individual items follow the table.
Page 81 INTERCEPTOR 147 2 Mbit/s and Data Analyzer Table 3-5 AUXILIARY Category (Continued) Item Selections Hist Buf x% ON or OFF Hist Rslt AIS, BIT ERRS, CHAR ERRS, CODE ERRS, CRC4 ERRS, ERR SEC, FAS DIST, FAS ERRS, FAS LOSS, MFAS DIST,...
Page 82 INTERCEPTOR 147 2 Mbit/s and Data Analyzer 3.6.1 Language Use the Language item to select the language for the menus, overlays, and printouts. The following selections are available for LANGUAGE. ENGLISH Select ENGLISH to display menus in English. <Local Language>...
Page 83 INTERCEPTOR 147 2 Mbit/s and Data Analyzer AMI (Alternate Mark Inversion) is a bipolar code with no zero substitution. 3.6.3 Error Type Use the Error Type item to specify the type of errors to be transmitted when ERROR INSERT is pressed. The following selections are available for Error Type.
Page 84 INTERCEPTOR 147 2 Mbit/s and Data Analyzer 3.6.5 Adjacent FAS Errs Use the Adjacent FAS Errs item to specify the number of adjacent FAS errors (3, 2, or 1) that you want the transmitter to transmit when you press ERROR INSERT. This feature can be used to test the “loss of framing synchronization”...
Page 85 INTERCEPTOR 147 2 Mbit/s and Data Analyzer SIGNAL Select SIGNAL for Signaling Summary prints which contain a record of up to 250 of the most recent signaling bit changes detected since the beginning of the current test. (The signaling bits are contained in Timeslot 16 of a 2 Mbit/s signal.) For a sample Print,...
Page 86 INTERCEPTOR 147 2 Mbit/s and Data Analyzer 3.6.9 Time Interval Use the Time Interval item to set the amount of time between automatic timed Prints. To change the time interval, move the cursor to the time displayed, and press SELECT until the desired time interval is displayed. The time interval is displayed in an HH:MM (hours:minutes) format.
Page 87 INTERCEPTOR 147 2 Mbit/s and Data Analyzer LOGIC (ON/OFF) When Event is set to LOGIC ON, any of the following logic events will trigger an Event Print: Pattern Sync, Pattern Sync Loss, Pattern Slip, Bit Errors. ALARMS (ON/OFF) When Event is set to ALARMS ON, any of the...
Page 88 INTERCEPTOR 147 2 Mbit/s and Data Analyzer 3.6.12 Prt Type Use the Prt Type item to specify the type of printer that is connected to the INTERCEPTOR 147. The following selections are available: PR40A Select PR40A if you are using TTC’s PR-40A Thermal Printer.
Page 89 INTERCEPTOR 147 2 Mbit/s and Data Analyzer CRLF Set the printer line termination to carriage return and linefeed. Set the printer line termination to linefeed. Set the printer line termination to carriage return. 3.6.15 RS232 Port Use the RS232 Port item to configure the RS232 Port (that...
Page 90 INTERCEPTOR 147 2 Mbit/s and Data Analyzer The following selections are available for number of Data Bits per Byte: 7 or 8 Set the number of data bits to 8 when Printer NOTE: Mode is set to GRAPH. 3.6.16 Hist Buf Use the Hist Buf (Histogram Buffer) item to turn the histogram buffer on or off.
Page 91 INTERCEPTOR 147 2 Mbit/s and Data Analyzer 3.6.17 Hist Rslt Use the Hist Rslt (Histogram Result) item to specify the result from the histogram buffer to be printed in a Histogram Print. (For more information, see the section on Histogram Prints.)
Page 92 INTERCEPTOR 147 2 Mbit/s and Data Analyzer 3.6.18 Hist Print? To create a histogram and send it to the Print Buffer, move the cursor to the Hist Print? item and press SELECT. The histogram is created and placed in the Print Buffer for printing when a printer is attached and ready.
Page 93 INTERCEPTOR 147 2 Mbit/s and Data Analyzer If the Start time that was specified (in the Start item) is later (relative to the time the histogram buffer was turned on) than the current time, and the histogram buffer is off, the display shows the following message.
Page 94 INTERCEPTOR 147 2 Mbit/s and Data Analyzer 3.6.20 Len Use the Len (Length) item to specify the amount of time to be covered in the Histogram Print. Specify the time length in the DD/HH:MM (day/hour:minute) format. 3.6.21 Hist Type Use the Hist Type item (Histogram Type) to specify whether you want the histogram to be printed in a GRAPH or LIST format (as described below).
Page 95 INTERCEPTOR 147 2 Mbit/s and Data Analyzer Move the cursor to the appropriate answer (NO or YES), and press SELECT. If you select NO, previously collected results remain in the histogram buffer. If you select YES, then the buffer is cleared, and the display shows the following message.
Page 96 INTERCEPTOR 147 2 Mbit/s and Data Analyzer 3.6.24 Program Recall Use the Program Recall item to recall a setup from any of the test instrument’s ten battery-backed memory locations (0 through 9). When you recall a setup, the test instrument is automatically configured to match that setup.
Page 97 INTERCEPTOR 147 2 Mbit/s and Data Analyzer M.2100 Select M.2100 to use the CCITT Recommendation M.2100 performance analysis standard. 3.6.26 Beeper Use the Beeper item to turn the beeper ON or OFF. When set to ON, the beeper beeps when you are viewing the SUMMARY Results category and there is a change in one of the items in the SUMMARY Results category.
Page 98 INTERCEPTOR 147 2 Mbit/s and Data Analyzer The current time is shown in a 24-hour HH:MM (hour:minute) format. 3.6.29 Date Use the Date item to set the test instrument’s internal calendar. The Date setting is used in the time and date stamp that appears on all Prints and is displayed in the Date result.
Page 99 INTERCEPTOR 147 2 Mbit/s and Data Analyzer To clear the test instrument’s memory, move the cursor to the Memory Clear? item, and press SELECT. The display shows the following message. Are You Sure? NO Move the cursor under the appropriate response (NO or YES) and press SELECT.
Page 100 INTERCEPTOR 147 2 Mbit/s and Data Analyzer 3-58...
Page 101: Test Results
INTERCEPTOR 147 2 Mbit/s and Data Analyzer TEST RESULTS OVERVIEW The INTERCEPTOR 147 provides test results that give you the information you need to qualify and maintain your telecommunications circuits. INTERCEPTOR 147 test results are grouped into the following categories.
Page 102: Logic & Time Results
When the SUMMARY category is displayed and a change occurs in one of the SUMMARY results, the beeper sounds (if it is activated). Also, before the INTERCEPTOR 147 is connected to the circuit under test (and, therefore, before test results are available), the SUMMARY results category displays the...
Page 103 Char Err (Character Error) Rcv Pat The Rcv Pat (Received Pattern) result indicates the test pattern that is being detected when the INTERCEPTOR 147 is set up for automatic pattern detection. Bit Errs The Bit Errs (Bit Errors) result indicates the number of bit errors detected in the test pattern since pattern synchronization was achieved.
Page 104 INTERCEPTOR 147 2 Mbit/s and Data Analyzer Time The Time result indicates the current time (in hours, minutes, and seconds) using a 24-hour clock and in the following format: HH:MM:SS. Date The Date result indicates the current date (in day, month, and year) in the following format: DD MMM YYYY.
Page 105: Signal, Code & Fas Results
INTERCEPTOR 147 2 Mbit/s and Data Analyzer SIGNAL, CODE & FAS RESULTS The SIGNAL, CODE & FAS Results category contains 2.048 Mbit/s signal frequency and level measurements, and contains results that are based on code and FAS errors. (The SIGNAL, CODE & FAS results are available only when Test is set to 2M or MUX.) The SIGNAL, CODE &...
Page 106 INTERCEPTOR 147 2 Mbit/s and Data Analyzer Bit Slip The Bit Slip result indicates the difference between the recovered clock of the receiver input and the recovered clock of the 2M Reference Input. (The Bit Slip result is available if Option 147-1 is installed.)
Page 107 INTERCEPTOR 147 2 Mbit/s and Data Analyzer MFAS Errs The MFAS Errs (Multiframe Alignment Signal Errors) result indicates the number of MFAS words received since MFAS or MFAS-CRC synchronization that contain an error. MFAS Rate The MFAS Rate result is the MFAS Errs result divided by the number of bits received.
Page 108 INTERCEPTOR 147 2 Mbit/s and Data Analyzer The format for the NFAS Word result is C1ABBBBB, where: A “C” in the first bit position indicates the presence of a valid CRC-4 code. Bit position two should always be set to “1.” (An “X” appears if the bit is received in error.)
Page 109 INTERCEPTOR 147 2 Mbit/s and Data Analyzer CRC MF Wrd The CRC MF Wrd (CRC Multiframe Word) result indicates the values received in the Bit 0 position of the eight consecutive NFAS words in a multiframe. The format for the CRC MF Word result is 001011ii,...
Page 110: Chan. & Signaling Results
INTERCEPTOR 147 2 Mbit/s and Data Analyzer CHAN. & SIGNALING RESULTS The CHAN. & SIGNALING (Channel and Signaling) results category contains results regarding the timeslots. An example set of CHAN. & SIGNALING results (for Timeslot 3) is shown below. Timeslot: 3 Active Timeslots: F123•••789012••5...
Page 111 INTERCEPTOR 147 2 Mbit/s and Data Analyzer Active Timeslots The Active Timeslots result provides a graphical representation of timeslots 0 through 31 in the following format: F123•••789012••5 M78••••••56••901 where: 0 - 9 Indicates the last digit of the timeslot number (0 to 31) of an active timeslot.
Page 112: Performance Results
INTERCEPTOR 147 2 Mbit/s and Data Analyzer Freq The Freq (Frequency) result is the measured frequency of the PCM-encoded signal in the selected timeslot. Peak The Peak result is the peak PCM code (1 through 27) detected during the previous second in the selected timeslot.
Page 113 INTERCEPTOR 147 2 Mbit/s and Data Analyzer The PERFORMANCE category can include the following results. G.821 Results M.2100 Results Avl Sec 2 Avl T % Avl Sec 2 %Avl T Unavl Sec 2 Una T 2 SES %SES 2 %SES...
Page 114 INTERCEPTOR 147 2 Mbit/s and Data Analyzer Err Sec Errored Seconds — The number of Available Seconds that contain one or more errors, calculated as specified in CCITT Specification G.821. Deg Min Degraded Minutes, calculated as specified in CCITT Specification G.821.
Page 115 INTERCEPTOR 147 2 Mbit/s and Data Analyzer 2 Una T Unavailable Time, calculated as specified in CCITT Specification M.2100. 2 SES Severely Errored Seconds, calculated as specified in CCITT Specification M.2100. 2 %SES Percentage of Severely Errored Seconds, calculated as specified in CCITT Specification M.2100.
Page 116 INTERCEPTOR 147 2 Mbit/s and Data Analyzer 4-16...
Page 117: Using A Printer
INTERCEPTOR 147 2 Mbit/s and Data Analyzer USING A PRINTER OVERVIEW You can set up the INTERCEPTOR 147 to create various types of Prints. The Prints are placed in the INTERCEPTOR 147’s Print Buffer. The Print Buffer can hold up to 50 standard (STD) Results Prints or 500 Event Prints.
Page 118: Controls Print
INTERCEPTOR 147 2 Mbit/s and Data Analyzer CONTROLS PRINT A Controls Print provides a Print indicating the test instrument’s current configuration. To create a Controls Print, press the PRINTER CONTROLS control on the INTERCEPTOR 147. A sample Controls Print follows.
Page 119 INTERCEPTOR 147 2 Mbit/s and Data Analyzer To create a manual Results Print, press the PRINTER RESULTS control. When you press the PRINTER RESULTS control, a Results Print (of the type you have selected) is created. Following are descriptions of the types of Results Prints.
Page 120: Auto Print - Timed
INTERCEPTOR 147 2 Mbit/s and Data Analyzer Results Print (Summary Format) A Results Print in Summary format provides a list of the most important results, as shown in the following example. ========================================= RESULTS PRINT 16:10:30 7-JAN-1994 Patt Loss: 0 MFAS Errs:...
Page 121: Auto Print - Event
INTERCEPTOR 147 2 Mbit/s and Data Analyzer To create a Timed Print, use the following instructions. Select the AUXILIARY setup category. Set Auto Print to TIMED. Set Time Interval to the desired value Determine the desired time interval between automatic Timed Prints in hours and minutes (HH:MM).
Page 122: Histogram Print
INTERCEPTOR 147 2 Mbit/s and Data Analyzer HISTOGRAM PRINT A Histogram Print provides information regarding accumulated results for a specified period of time. There are two types of Histogram Prints: Graph and List. Examples of the different formats of histogram prints, depending on the specified setup, are provided at the end of these instructions.
Page 123 INTERCEPTOR 147 2 Mbit/s and Data Analyzer Use LIST to present the results information as a list of ASCII characters and skip to Step 6. Set Printer Mode (GRAPH or ASCII). For non-graphics printers, use ASCII (so that the bars of the graph can be represented using ASCII characters).
Page 124 INTERCEPTOR 147 2 Mbit/s and Data Analyzer Figure 5-1 is an example of a Histogram Print when Hist Type is set to GRAPH and Printer Mode is set to GRAPH. The bars in the graph represent the test results. ==================================================...
Page 125 INTERCEPTOR 147 2 Mbit/s and Data Analyzer Figure 5-2 is an example of a Histogram Print when Hist Type is set to GRAPH and Printer Mode is set to ASCII. The bars in the graph are represented by columns of asterisks.
Page 126: Printer Setup
Figure 5-3 Histogram Print (Hist Type is LIST) PRINTER SETUP To print, connect the INTERCEPTOR 147 to an appropriate printer and configure the INTERCEPTOR 147 for operation with the printer. (You can use any serial printer that is compatible with the INTERCEPTOR 147’s modified V.24 PRINTER / REMOTE CONTROL port...
Page 127 INTERCEPTOR 147 2 Mbit/s and Data Analyzer Select appropriate Prt Type. If you are using TTC’s PR-40A printer, select PR-40A. This selection automatically selects the appropriate baud rate, parity, and data bits settings. If you are using a different printer, select OTHER,...
Page 128: Printer Connection
To AC power (as necessary) Figure 5-4 Printer Connection Prepare to print Power on the INTERCEPTOR 147 and the printer. Do not place the printer on line yet! NOTE: If desired, clear the Print Buffer. The Print Buffer stores Prints (including automatically-generated Prints) for printing when a printer is available.
Page 129: Remote Control
INTERCEPTOR 147 by typing in commands on a computer keyboard. And instead of viewing test results by observing the front panel of the INTERCEPTOR 147 or by printing out the results, you can view test results by displaying them on a computer screen.
Page 130: Remote Control Operation
INTERCEPTOR 147 2 Mbit/s and Data Analyzer REMOTE CONTROL OPERATION If you have a suitable remote controller (such as a dumb terminal, a computer, or a controller), perform the following steps to set up for Remote Control operation. Connect the 147 and the remote controller.
Page 131: Commands And Queries
IEEE 488.2 interface, plus commands used to set up the INTERCEPTOR 147, commands to obtain tests results, and miscellaneous commands. The remote control queries are messages that you send to the INTERCEPTOR 147 to request information.
Page 132 INTERCEPTOR 147 2 Mbit/s and Data Analyzer 6.3.1 Syntax for Commands and Queries The general format for entering commands is: command:subcommand parameter1,parameter2 terminator There is a colon between the command and the subcommand, and there is a space between the subcommand and the first parameter (when there is a parameter).
Page 133 INTERCEPTOR 147 2 Mbit/s and Data Analyzer The following conventions are used in the representation of the commands/queries presented in this section. < > Substitute the appropriate value (in the indicated format, as appropriate). [x|y|z] You must type x, or y, or z.
Page 134 INTERCEPTOR 147 2 Mbit/s and Data Analyzer *ESE [<mask> | ?] Event Status Enable command/query The *ESE command sets the Standard Event Status Enable Register bits. The value of the bits in the Standard Event Status Enable Register determines which bits in that register are enabled.
Page 135 INTERCEPTOR 147 2 Mbit/s and Data Analyzer *ESR? Event Status Register query only The *ESR? query requests the contents of the Standard Event Status Register. The value returned is the weight of all bits that are set at the time you read the byte. The Standard Event Status Register is cleared after it is read.
Page 136 INTERCEPTOR 147 2 Mbit/s and Data Analyzer *LRN? Learn Device Setup query only The *LRN? query requests the current test setup. The response lists the commands that are sent to the test instrument at some later time to restore it to its present setup.
Page 137 The *OPT? query requests which options are installed in the INTERCEPTOR 147. A “0” represents an option that is not installed. If no options are installed, a series of seven 0’s is returned. An installed option is represented by its name.
Page 138 *PSC [<int> | ?] Power-on Status Clear command/query Use the *PSC command to set the power-on status clear bit setting of the INTERCEPTOR 147, using the following values for <int>. The INTERCEPTOR 147 automatically clears all of the Status Enable Registers when powered on.
Page 139 RCL 3 Recalls stored test setup number *RST Reset to factory defaults. command only The *RST command sets the INTERCEPTOR 147 to its factory default settings. *SAV <int> Save test setups. command only The *SAV command saves the current cofiguration of the test instrument, and under the number you specify.
Page 140 INTERCEPTOR 147 2 Mbit/s and Data Analyzer The act of reading the Parallel Poll Enable Register sets Bit 6 of the Status Byte Register. The bits of the Service Request Enable Register include: Bit 0 Error Available Bit 1 Print Available (PAV)
Page 141 *TRG Trigger command only The *TRG command executes a device trigger, causing the INTERCEPTOR 147 to clear all results. This command is similar to the RESULT:CLEAR command. *TST? Self-Test query only Use the *TST? query to find out whether the INTERCEPTOR 147 passed or failed its last self-test.
Page 142 INTERCEPTOR 147 2 Mbit/s and Data Analyzer *WAI Wait command only The *WAI command causes all previous commands to complete before executing any other commands or queries. NOTE: The INTERCEPTOR 147 executes all commands serially. Therefore, the *WAI command is not necessary.
Page 143 INTERCEPTOR 147 2 Mbit/s and Data Analyzer The act of reading the contents of the register sets Bit 1 of the Test Summary register. Example: > Returns an integer indicating STATUS:ALRM? the status of the Alarm register. A FAS Distant alarm and MFAS (TS16) Distant alarm are being received.
Page 144 INTERCEPTOR 147 2 Mbit/s and Data Analyzer STATUS:ALRM_HIST? Status: Alarm History query only The STATUS:ALRM_HIST? query responds with an integer indicating which history alarms are activated. The bits read include: Bit 0 Bit 1 TS-16 AIS Bit 2 FAS Distant...
Page 145 INTERCEPTOR 147 2 Mbit/s and Data Analyzer STATUS:LINE? Status: Line query only The response to a STATUS:LINE? query is a bit-weighted value indicating the contents of the Line register. The bits of the Line register reflect the current status of the input signal and include the following bits.
Page 146 INTERCEPTOR 147 2 Mbit/s and Data Analyzer For additional information, see Appendix B. The bits read include: Bit 0 Signal Present Bit 1 FAS Sync Bit 2 MFAS Sync Bit 3 Pattern Sync Bit 4 Pattern Invert Bit 5 Bit 6...
Page 147 INTERCEPTOR 147 2 Mbit/s and Data Analyzer Example: > STATUS:LINE_HIST? Reads the Line History register. The value 11 (=8+2+1) indicates that the INTERCEPTOR 147 has lost pattern sync, FAS Sync, and signal presence since the register was last read. STATUS:PRINT?
Page 148 INTERCEPTOR 147 2 Mbit/s and Data Analyzer STATUS:TEST? Status: Test Summary Register query only The response to the STATUS:TEST? query is a bit- weighted value indicating the contents of the Test Summary register. (The bits of the Test Summary register are set according to the corresponding bits in the Line Status Summary and Alarm Status registers.)
Page 149 INTERCEPTOR 147 2 Mbit/s and Data Analyzer When a bit of the Test Summary register is set and its corresponding bit in the Test Summary Enable register is also set, the Test Summary Status bit (Bit 2) of the Status Byte register is set.
Page 150 INTERCEPTOR 147 2 Mbit/s and Data Analyzer 6.3.4 Setup Commands and Queries SET:2MREF [BRG | TRM | MON | ?] Set the 2M Reference Input. command/query This command is available only if Option 147-1 is installed. SET:64K:RX [<timeslot> | ?] Set the 64 kbit/s Receive Timeslot.
Page 151 INTERCEPTOR 147 2 Mbit/s and Data Analyzer SET:CHRT:[NORM | REST | ?] Set the channel rate. command/query SET:CODE_RATE:[1E-3 | 5E-3 | ?] Set the error insertion rate for code command/query errors. SET:DATE [“<DD/MMM/YYYY>”] Set the date. command only Example: >...
Page 152 INTERCEPTOR 147 2 Mbit/s and Data Analyzer SET:FRMG [AUTO|MFASC|MFAS|FASC|FAS|UNFR| ?] Set: Framing. command/query SET:GCLK [INTRNL | INTF | ?] Set Generator Clock. command/query SET:HSTB [ON|OFF|CLEAR| ?] Set Histogram Buffer. command/query SET:HSTC Clear the histogram buffer. command only SET:HSTF? Request how full the histogram buffer is.
Page 153 INTERCEPTOR 147 2 Mbit/s and Data Analyzer after you enter the SET:HSTM MAN command. When set to MAN, you can use the SET:HSTL command to set the length of the histogram. Example: > Requests the current SET:HSTM? setting. The current mode is AUTO AUTO.
Page 154 INTERCEPTOR 147 2 Mbit/s and Data Analyzer The values used in the length parameter may be as follows: 00 to 99 00 to 23 00 to 59 The start time is relative to the time the histogram buffer was turned on. For example, if the histogram buffer is...
Page 155 INTERCEPTOR 147 2 Mbit/s and Data Analyzer SET:INTF [V.24A | V.24S | V.11 | X.21 | V.35| 64K | ?] Set Interface. command/query Use 64K for a G.703 64 kbit/s interface. SET:LINE:[CS | CTS | DM | DSR | DTR | LL |...
Page 156 INTERCEPTOR 147 2 Mbit/s and Data Analyzer SET:Mx64K:RX [“<32-bit string>” | ?] Set the non-adjacent receive timeslots to be selected or not selected. command/query Used to indicate which receive timeslots are selected. A selected timeslot is indicated by a “1”; a non-selected timeslot is indicated by a “0.”...
Page 157 INTERCEPTOR 147 2 Mbit/s and Data Analyzer SET:Nx64K:TX [<start timeslot>, <number of timeslots> | ?] Set adjacent transmit timeslots command/query to be selected. Used to indicate which transmit timeslots are selected. The timeslots are numbered 0 through 31. <start timeslot>, enter the number of the first selected timeslot.
Page 158 INTERCEPTOR 147 2 Mbit/s and Data Analyzer SET:PORT [“<baud, parity, data bits>” | ?] Set the RS232 port configuration. command/query The following values may be used. Baud 300, 1200, 2400, 4800, 9600 Parity N (no parity), E (even parity), or O (odd parity)
Page 159 INTERCEPTOR 147 2 Mbit/s and Data Analyzer SET:SCLK [NORMAL | INV | ?] Set Send Data Clock Polarity. command/query SET:SUBCH [1 | 2 | 3 | 4 | ?] Select the 16K subchannel within a command/query 64K timeslot. SET:SYNTH [50 to 2048000 | ?] Set the synthesizer rate.
Page 160 INTERCEPTOR 147 2 Mbit/s and Data Analyzer SET:TSBYTE [“<8-bit string>” | ?] Set Timeslot Byte (when pattern command/query is TSBYTE). SET:TSIDL [“<8-bit string>” | ?] Set Timeslot Idle. command/query SET:TX [ON | OFF | ?] Set Transmitter. command/query Used to turn the 2 Mbit/s Transmitter on or off (to conserve power).
Page 161 INTERCEPTOR 147 2 Mbit/s and Data Analyzer SET:VF_LEVEL [-20.0 to +3.0 | ?] Set the transmitted VF level. command/query SET:V.11 [TERM | UNTERM | ?] Set V.11 Termination. command/query SET:V.24A:BITS [5 | 6 | 7 | 8 | ?] Set V.24 Asynchronous Bits.
Page 162 INTERCEPTOR 147 2 Mbit/s and Data Analyzer RES:2_%EFS? Results: Percentage of M.2100 Error- query only Free Seconds RES:2_%AV_T? Results: Percentage of Available Time query only NOTE: Only valid in M2100 performance. RES:2_%EFS? Results: Percentage of Error-Free Seconds query only NOTE: Only valid in M2100 performance.
Page 163 INTERCEPTOR 147 2 Mbit/s and Data Analyzer RES:2M_FREQ? Results: 2 Mbit/s Signal Frequency query only Short form: RES:2MFREQ? Not Ready Value: RES:2M_FREQ_PPM? Results: 2 Mbit/s Frequency Delta ppm. query only Short form: RES:2MFRQP? Not Ready Value: RES:2M_LEVEL_DBNOM? Results: 2 Mbit/s Level dB nominal...
Page 164 INTERCEPTOR 147 2 Mbit/s and Data Analyzer RES:ACTIVE_TIMESLOTS? Results: Active Timeslots query only Response is a string of characters indicating which timeslots are active. For more information, see “Active Timeslots.” (Also see the RES:TIMESLOT command.) Short form: RES:ATMSL? Not Ready Value: “NOT READY”...
Page 165 INTERCEPTOR 147 2 Mbit/s and Data Analyzer RES:BER_SES? Results: Bit Error Rate Minus SES bit errors query only Short form: RES:BSES? Not Ready Value: -1.0E + 0 RES:BIT_ERRS? Results: Bit Errors query only Short form: RES:BTER? Not Ready Value: RES:BIT_SLIP?
Page 166 INTERCEPTOR 147 2 Mbit/s and Data Analyzer RES:CRC_ERRS? Results: CRC Errors query only Short form: RES:CRER? Not Ready Value: RES:CRC_MF_WORD? Results: MFAS Word query only Short form: RES:CMWD? Not Ready Value: “NOT READY” RES:CRC_RATE? Results: CRC Error Rate query only...
Page 167 INTERCEPTOR 147 2 Mbit/s and Data Analyzer RES:ERR_SEC? Results: Errored Seconds query only Short form: RES:ERRS? Not Ready Value: RES:ERR_SES? Results: Bit Errors Minus SES query only Short form: RES:ESES? Not Ready Value: RES:FAS_ERRS? Results: FAS Errors query only Short form:...
Page 168 INTERCEPTOR 147 2 Mbit/s and Data Analyzer RES:HELD:<result>? Results: Held Result query only Returns the specified result using the information from the snapshot in the remote control buffer. Example: > Saves all current results. RES:HOLD > RES:HELD:BER? Requests the saved BER result.
Page 169 INTERCEPTOR 147 2 Mbit/s and Data Analyzer RES:MFAS_WORD? Results: MFAS Word query only Short form: RES:MFWD? Not Ready Value: “NOT READY” RES:NFAS_WORD? Results: NFAS Word query only Used to obtain the Not FAS Word result. For more information, see NFAS Word in the SIGNAL, CODE &...
Page 170 INTERCEPTOR 147 2 Mbit/s and Data Analyzer RES:RX_BYTE? <timeslot> Results: Receive Byte query only Short form: RES:RXBT? <timeslot> Not Ready Value: “NOT READY” RES:SA6BITS? Results: Sa6 Bits string query only RES:SES? Results: Severely Errored Seconds query only Not Ready Value:...
Page 171 INTERCEPTOR 147 2 Mbit/s and Data Analyzer 6.3.6 Miscellaneous Commands and Queries LOCAL Local Control command only Sets the INTERCEPTOR 147 to local control mode. (Enables all controls on the INTERCEPTOR 147.) LOCK[?] Lock command/query Completely disables the controls on the front panel of the test instrument —...
Page 172: Error Messages
If a remote control command or query is typed incorrectly, the INTERCEPTOR 147 responds with an error message. The error messages that the INTERCEPTOR 147 can send are listed below alphabetically with a description of the error message. When you receive one of these messages, check the last command you entered and be sure to enter it correctly.
Page 173 INTERCEPTOR 147 2 Mbit/s and Data Analyzer 2M Reference Input Option Not Installed. This error message is caused by requesting the bit slips results when Option 147-1 is not installed. You may receive this message in response when you send the following query: res:bits? Argument out of Range.
Page 174 INTERCEPTOR 147 2 Mbit/s and Data Analyzer Invalid Bit String. This error message is caused by sending a bit string that contains characters other than binary (for example, sending 12345678 instead of 10110110). You may receive this message in response when you send one of the SET: commands.
Page 175 INTERCEPTOR 147 2 Mbit/s and Data Analyzer Invalid Value. This error message is caused by sending a value that is invalid for the associated register. You may receive this message in response when you send one of the SET: commands.
Page 176 INTERCEPTOR 147 2 Mbit/s and Data Analyzer Result Not Available. This error message is caused by requesting a result value before it is available. You may receive this message in response when you send one of the RES: commands. Save Number Out of Range.
Page 177 INTERCEPTOR 147 2 Mbit/s and Data Analyzer Unrecognized Auto Print. This error message is caused by sending an invalid auto print parameter. You may receive this message in response when you send the following command: set:aupr. Unrecognized Channel Rate. This error message is caused by sending an invalid channel rate parameter.
Page 178 INTERCEPTOR 147 2 Mbit/s and Data Analyzer Unrecognized Histogram Buffer Action. This error message is caused by sending an invalid histogram buffer action parameter. You may receive this message in response when you send the following command: set:hstb. Unrecognized Histogram Results.
Page 179 INTERCEPTOR 147 2 Mbit/s and Data Analyzer Unrecognized Remote Control Mode. This error message is caused by sending an invalid remote control mode parameter. You may receive this message in response when you send the following command: misc:rcmode. Unrecognized Result Print.
Page 180 INTERCEPTOR 147 2 Mbit/s and Data Analyzer Unrecognized Tx Clock. This error message is caused by sending an invalid transmit clock parameter. You may receive this message in response when you send the following command: set:txclk. Unrecognized Tx Coding. This error message is caused by sending an invalid transmit coding parameter.
Page 181: Applications
INTERCEPTOR 147 2 Mbit/s and Data Analyzer APPLICATIONS OVERVIEW You can use the INTERCEPTOR 147 in a variety of testing applications for 2 Mbit/s and data rate signals. For a description of the various testing scenarios, how to set up...
Page 182 INTERCEPTOR 147 2 Mbit/s and Data Analyzer Test Setup Perform the Basic Setup Procedure Verify the PANEL LOCK and SELF LOOP LEDs are off. TEST MODE category Since you will be performing full-bandwidth tests, set Test to 2M and set Test Mode to 2048K.
Page 183: Out-Of-Service Testing A 2048 Kbit/S Circuit
INTERCEPTOR 147 2 Mbit/s and Data Analyzer Test Results Check the error results To analyze the performance of a 2048 kbit/s link (while it is in-service), you can check the circuit CRC-4 error results, frame (FAS and MFAS) error results, REBEs (Remote End Block Errors), or code error results.
Page 184: Out-Of-Service Testing Of A 2048 Kbit/S Circuit
Test Pattern 2.048 Mbit/s Link Digital Network Loopback* *NOTE: A second INTERCEPTOR 147 may be used in place of the loopback to perform an end-to-end test. Figure 7-2 Out-of-Service Testing of a 2048 kbit/s Circuit Test Setup Perform the Basic Setup Procedure Verify the PANEL LOCK and SELF LOOP LEDs are off.
Page 185 INTERCEPTOR 147 2 Mbit/s and Data Analyzer Check AUXILIARY category items If you are using a printer, set all printer-related setup items as desired. (For more information, see Section 5). Check the Time and Date items to verify they are set for the current time and date.
Page 186: Analog/Digital Testing Of Avoice Channel
INTERCEPTOR 147 2 Mbit/s and Data Analyzer ANALOG/DIGITAL TESTING OF A VOICE CHANNEL You can use the INTERCEPTOR 147 on the digital (line) side of a PCM multiplexer (mux). First use a Voice Frequency (VF) test set to insert a test tone into the analog input of a voice channel card in the mux (as shown in Figure 7-3).
Page 187 INTERCEPTOR 147 2 Mbit/s and Data Analyzer Set the CONFIGURATION category items Set Transmitter to OFF (this is a receive-only test). Set Framing to the format used by the link under test or set Framing to AUTO. Select the timeslot to be tested...
Page 188: Troubleshooting An Nx56 Or Nx64 Kbit/S Circuit
TROUBLESHOOTING AN NX56 OR NX64 KBIT/S CIRCUIT You can use the INTERCEPTOR 147 to isolate a fault on an Nx64 kbit/s (or Nx56 kbit/s) circuit. Simply take the suspected adjacent timeslots out of service, transmit an appropriate test pattern over the selected timeslots, and check the error results at various points along the circuit.
Page 189 INTERCEPTOR 147 2 Mbit/s and Data Analyzer Test Setup Use the following steps to set up the INTERCEPTOR 147 that is used for monitoring at the exchange. Perform the Basic Setup Procedure Verify the PANEL LOCK and SELF LOOP LEDs are off.
Page 190 INTERCEPTOR 147 2 Mbit/s and Data Analyzer 7-10...
Page 191 INTERCEPTOR 147 2 Mbit/s and Data Analyzer Select the timeslots to be tested Check AUXILIARY category items If you are using a printer, set all printer-related setup items as desired. (For more information, see Section 5). Check the Time and Date items to verify they are set for the current time and date.
Page 192: Commissioning A Customer'snx64K Service
INTERCEPTOR 147 2 Mbit/s and Data Analyzer COMMISSIONING A CUSTOMER’S NX64K SERVICE The INTERCEPTOR 147 can be used to commission a new Nx64K service from the customer’s premises, even before the 2048 kbit/s NTE is installed. Pre-service testing is performed using the basic out-of-service...
Page 193 INTERCEPTOR 147 2 Mbit/s and Data Analyzer Set the CONFIGURATION category items Set Transmitter to ON. Set Framing to the format used by the circuit under test when in service (or set Framing to AUTO). Set Loopcodes to OFF (not performing loopback...
Page 194: Monitoring 2048 Kbit/S Circuits From Ds3 Access Points
MONITORING 2048 KBIT/S CIRCUITS FROM DS3 ACCESS POINTS You can use the INTERCEPTOR 147 in conjunction with a TTC T-BERD 305, or a T-BERD 310 DS3 Analyzer equipped with 2048 kbit/s drop capability, to monitor a 2048 kbit/s circuit from a DS3 (45 Mbit/s) signal access point.
Page 195: Monitoring A 2 Mbit/S Circuit From A Ds3 Access Point
INTERCEPTOR 147 2 Mbit/s and Data Analyzer can also be used to perform in-service tests on 2048 kbit/s circuits from DS3 monitor points. For a diagram of a typical test setup, see Figure 7-6. 2.048 Mbit/s Test Pattern INTERCEPTOR 147...
Page 196 INTERCEPTOR 147 2 Mbit/s and Data Analyzer Set the CONFIGURATION category items Set Transmitter to OFF to conserve battery life. Set Framing and Pattern to the framing and pattern used by the transmitting test set. Check AUXILIARY category items If you are using a printer, set all printer-related setup items as desired.
Page 197: Performing A Bit Slip/Frame Slip Test
INTERCEPTOR 147 2 Mbit/s and Data Analyzer 7.8 PERFORMING A BIT SLIP/FRAME SLIP TEST You can use an INTERCEPTOR 147 that includes Option 147-1 to perform a bit slip or frame slip test when, for example, you are troubleshooting a 2048 kbit/s link to the customer premises (as shown in Figure 7-7).
Page 198 INTERCEPTOR 147 2 Mbit/s and Data Analyzer Set the CONFIGURATION category items Set Transmitter to ON. Set Framing to the format used by the 2048 kbit/ s link under test (or set Framing to AUTO). Set Tx Clock to 2M REF.
Page 199: Testing At A Data Interface
2M reference is lower than the recovered clock frequency. TESTING AT A DATA INTERFACE You can use the INTERCEPTOR 147 to test data interfaces by replacing a DCE or a DTE such as a terminal or multiplexer, and conducting a complete Bit Error test. For a diagram of a typical test setup, see Figure 7-8.
Page 200 INTERCEPTOR 147 2 Mbit/s and Data Analyzer Set Test to 2M and set TEST MODE category items Set Test Mode to DATA. Set Intf to the interface used on the interface under test. Set the CONFIGURATION category items In the Data Lead item, set RTS and DTR to ON.
Page 201: Testing Multiplexed (Data To 2048 Kbit/S) Circuits
INTERCEPTOR 147 2 Mbit/s and Data Analyzer Check the SL Delay In the LOGIC & TIME Results category, check the signal lead delay (SL Delay) at the DTE/DCE interface. Verify received frequency and signal level In the SIGNAL, CODE & FAS Results category, check Freq and Freq ∆ppm to verify the receive...
Page 202 INTERCEPTOR 147 2 Mbit/s and Data Analyzer Test Setup Perform the Basic Setup Procedure Verify the PANEL LOCK and SELF LOOP LEDs are off. Set Test to MUX and set TEST MODE category items Set TX → RX to DATA → 2M.
Page 203 INTERCEPTOR 147 2 Mbit/s and Data Analyzer Test Results Observe the Data Interface LEDs and 147 front- panel LEDs Watch the DATA INTERFACE LEDs to verify the proper DTE/DCE exchange takes place. Check the STATUS & ALARMS LEDs to verify proper detection of signal, framing, pattern, and absence of alarms.
Page 204: Testing Demultiplexed (2048 Kbit/S To Data) Circuits
INTERCEPTOR 147 2 Mbit/s and Data Analyzer 7.11 TESTING DEMULTIPLEXED (2048 KBIT/S TO DATA) CIRCUITS In a demultiplex test, you can transmit a 2 Mbit/s signal and then demultiplex it on the data side to check what has been received. For a diagram of a typical test setup, see Figure 7-10.
Page 205 INTERCEPTOR 147 2 Mbit/s and Data Analyzer Set the CONFIGURATION category items Set Framing to the format used on the 2048 kbit/s link under test (or set Framing to AUTO). Set Data Leads RTS and DTR to ON. Set LL and RL to OFF.
Page 206: Notes Regarding Round-Trip Delay
INTERCEPTOR 147 2 Mbit/s and Data Analyzer Check the SUMMARY Results for any errors or events Check the SL Delay In the LOGIC & TIME Results category, check the signal lead delay (SL Delay) at the DTE/DCE interface. ∆ Verify received frequency and In the SIGNAL, CODE &...
Page 207 INTERCEPTOR 147 2 Mbit/s and Data Analyzer Check the STATUS & ALARMS LEDs Verify signal presence and appropriate frame synchronization. Pattern synchronization does not apply NOTE: for Round-Trip Delay testing. Press the RESTART control to begin each measurement Check the RT Delay (Round-Trip Delay) result Check in the LOGIC &...
Page 208 INTERCEPTOR 147 2 Mbit/s and Data Analyzer 7-28...
Page 209: Specifications
2 MBIT/S OPERATING MODES This section lists the capabilities of the INTERCEPTOR 147 when operating on 2.048 Mbit/s signals. 8.1.1 Framing The INTERCEPTOR 147 can process signals with the following CCITT G.704 framing formats: • FAS with or without CRC-4 •...
Page 210 Internal (2.048 MHz ±5 ppm stability) • • Recovered Offset ±50, 100 ppm with 5 ppm stability (Option • 147-1) • External (Option 147-1) 8.1.6 Encoding The INTERCEPTOR 147 can process 2 Mbit/s signals using the following types of encoding: • HDB3 •...
Page 211 INTERCEPTOR 147 2 Mbit/s and Data Analyzer 8.1.7 Output Connectors/Levels The INTERCEPTOR 147 includes the following connectors: 120Ω balanced: 3-pin banana. ±3V ±10% • • 75Ω unbalanced: 1.6/5.6 mm or BNC 2.37V ± 10% • Serial 8-pin DIN (PRINTER / REMOTE CONTROL port) 8.1.8...
Page 212 0V to 7V (±3%). Voltage: 2.048 Mbit/s Level: -36 to +7.4 dBnom (±0.3 dB). 8.1.11 Compliance with CCITT Recommendations The INTERCEPTOR 147 also complies with the following CCITT Recommendations. 2M G.772 (for monitor) 2M G.823 (for jitter tolerance) 2M G.704 (for framing)
Page 213: V.11 Data Interface
INTERCEPTOR 147 2 Mbit/s and Data Analyzer V.11 DATA INTERFACE To use the V.11 interface, you must use the appropriate adapter cable. Electrical Interfaces CCITT Recommendations V.11 and V.10 Circuit and pin assignments ISO4902:1989(E) Data Rates For both terminated and unterminated synchronous interfaces, data rates from 300 bit/s to 2.048 Mbit/s are...
Page 214: X.21 Data Interface
INTERCEPTOR 147 2 Mbit/s and Data Analyzer X.21 DATA INTERFACE The following specifications apply to the X.21 interface. Interface and contact number in accordance with ISO4903 (15-pin DTE/DCE connectors). Data Rates For the synchronous X.21 mode, data rates from 300 bit/ s to 2.048 Mbit/s are available.
Page 215: Codirectional 64 Kbit/S
INTERCEPTOR 147 2 Mbit/s and Data Analyzer CODIRECTIONAL 64 KBIT/S G.703 INTERFACE To use the CCITT G.703 64kbit/s codirectional interface, you must use the appropriate adapter cable. Electrical Interface CCITT Recommendation G.703 64 kbit/s codirectional with exceptions. 64 kHz ±5ppm...
Page 216: General
INTERCEPTOR 147 2 Mbit/s and Data Analyzer Line Terminator: CR, LF, CRLF. Connector: Serial, 8-pin DIN (See Appendix A for the pin assignments.). GENERAL 8.8.1 Memory Specifications In non-volatile memory, you can store: • up to 10 complete configurations for the test instrument •...
Page 217 INTERCEPTOR 147 2 Mbit/s and Data Analyzer 8.8.2 Physical Specifications The physical characteristics for the INTERCEPTOR 147 are: Case Dimensions: 9.1 cm (3.6 in.) High. 11.4 cm (4.5 in.) Wide. 21.8 cm (8.6 in.) Deep. Weight: 1.8 kg (4.0 lbs).
Page 218 INTERCEPTOR 147 2 Mbit/s and Data Analyzer 8-10...
Page 219: Maintenance And Service
INTERCEPTOR 147 2 Mbit/s and Data Analyzer MAINTENANCE AND SERVICE OVERVIEW This section contains information on maintenance and service for the INTERCEPTOR 147, including TTC’s warranty policies and repair procedures. TROUBLESHOOTING Use the appropriate procedures listed below, depending on whether the test instrument fails to turn on, or does not operate as expected.
Page 220: Service
INTERCEPTOR 147 2 Mbit/s and Data Analyzer 9.2.2 If Your Test Instrument Does Not Operate As Expected If your test instrument cannot successfully perform the Initial Check-Out Procedure (see Section 1.7), or if it does not operate as expected, check the following items.
Page 221 TTC. The INTERCEPTOR 147 will be repaired or replaced (at our option) at no charge for a period of three (3) years after shipment to the customer. Cables, printers, accessories,...
Page 222 INTERCEPTOR 147 2 Mbit/s and Data Analyzer 9.3.2 In-Warranty Service Equipment in warranty must be returned to the factory or authorized service center with shipping prepaid. The equipment should be packed and shipped in accordance with Instructions in Section 1.4 of this manual. Before...
Page 223 INTERCEPTOR 147 2 Mbit/s and Data Analyzer Once an out-of-warranty repair is made, the repaired part or component is warranted for one year. This warranty applies only to the part that was repaired; other parts or components are not covered under the one year repair warranty.
Page 224: How To Contact Ttc
INTERCEPTOR 147 2 Mbit/s and Data Analyzer HOW TO CONTACT TTC If you have any questions regarding the operation, application, or service of your test instrument, please call your TTC Distributor, or contact TTC (at the numbers or address listed below).
Page 225 INTERCEPTOR 147 2 Mbit/s and Data Analyzer You may also contact your local TTC Offices: In Canada: TTC-Montreal: (514) 879-1820 TTC-Toronto: (905) 507-4117 TTC-Vancouver: (604) 436-0855 In Europe: TTC-Europe: 0 89 8116935 In France: TTC-France: 0 1-30.48.83.00, or 0 1-30.48.83.90 In Germany: TTC-Friedrichsdorf: 0 6172.77055...
Page 226 INTERCEPTOR 147 2 Mbit/s and Data Analyzer...
Page 227 (to plug into the printer or the remote controller). When connected to a printer or remote controller, the INTERCEPTOR 147 acts as a DCE. The pins used on the PRINTER / REMOTE CONTROL interface and their associated functions are listed below.
Page 228 INTERCEPTOR 147 2 Mbit/s and Data Analyzer...
Page 229 DATA COMMUNICATION INTERFACES To conduct a Data or Mux test, you must connect the data circuit under test to the INTERCEPTOR 147 using one of the data interfaces. During a Data or Mux test, Data communication interface leads are activated. This appendix...
Page 230: B.3 Pin Assignments For Data Communication Interfaces
In all the tables, CCITT pin number 108 refers to CCITT pin number 108/2. In all the tables, the signal names (e.g. V.24 NOTE: Name) apply to the INTERCEPTOR 147 end of the cable.
Page 231 INTERCEPTOR 147 2 Mbit/s and Data Analyzer V.24 DCE Crossover Cable The V.24 DCE crossover cable is a 25-pin D-type male to a a 25-pin D-type female. The pin assignments for the V.24 DCE crossover cable are listed in the Table B-1.
Page 232 INTERCEPTOR 147 2 Mbit/s and Data Analyzer V.11 DCE Crossover Cable The table below lists the pin assignments for the V.11 DCE crossover cable. The V.11 DCE crossover cable is a 50-pin D-type male to a 37-pin D-type female. Table B-2 V.11 DCE Crossover Cable Pin Assignments...
Page 233 INTERCEPTOR 147 2 Mbit/s and Data Analyzer Table B-2 V.11 DCE Crossover Cable Pin Assignments (Continued) Description CCITT V.11 To 147 To DTE Ref. Name DB50 DB37 Male Female Terminal Ready TR (B) Receiver Ready RR (B) Signal Ground Terminal Timing 113...
Page 234 INTERCEPTOR 147 2 Mbit/s and Data Analyzer V.35 DCE Crossover Cable The table below lists the pin assignments for the V.35 DCE crossover cable. The V.35 DCE crossover cable is a 50-pin D-type male to a V.35 female. Table B-3 V.35 DCE Crossover Cable Pin Assignments...
Page 235 INTERCEPTOR 147 2 Mbit/s and Data Analyzer Table B-3 V.35 DCE Crossover Cable Pin Assignments (Continued) Description CCITT V.35 To 147 To Ref. Name DB50 Male V.35 Serial Clock SCT (B) Transmit (B) Signal Ground SGND Signal Ground SGND Serial Clock...
Page 236 INTERCEPTOR 147 2 Mbit/s and Data Analyzer Table B-4 V.21 DCE Crossover Cable Pin Assignments (Continued) Description CCITT X.21 To 147 To DTE Ref. Name DB15 DB15 Male Female Ground SGND Tx Data (B) T (B) Rx Data (B) R (B)
Page 237 INTERCEPTOR 147 2 Mbit/s and Data Analyzer V.11 DTE Adapter Cable The following table lists the pin assignments for the V.11 DTE crossover cable. The V.11 DTE cable is a 50-pin D- type male special connector to a a 37-pin D-type male connector.
Page 238 INTERCEPTOR 147 2 Mbit/s and Data Analyzer Table B-6 V.11 DTE Adapter Cable Pin Assignments (Continued) Description CCITT V.11 To 147 To DCE Ref. Name DB-50 DB37 Male Male Data Mode DM (A) 11 Terminal Ready TR (A) 12 Receiver Ready...
Page 239 INTERCEPTOR 147 2 Mbit/s and Data Analyzer V.35 DTE Adapter Cable The pin assignments for the V.35 DTE crossover cable (50-pin D-type male to V.35 male) are listed in the following table. Table B-7 V.35 DTE Adapter Cable Pin Assignments...
Page 240 INTERCEPTOR 147 2 Mbit/s and Data Analyzer Table B-7 V.35 DTE Adapter Cable Pin Assignments (Continued) Description CCITT Signal To 147 To DCE Ref. Name DB50 Y.35 Male Male Data Terminal Ready Received Line RLSD Signal Detector Remote Loop Serial Clock...
Page 241: B.4 Signal Leads For Data Communication Interfaces
For information regarding which signal leads are used depending on the Emulate, Gen Clk (and, as applicable, Rcv Clk) selections on the INTERCEPTOR 147, see the figures in this section. In the figures, the shaded lines indicate the clock source for the specified selections.
Page 242 INTERCEPTOR 147 2 Mbit/s and Data Analyzer DTE/INTRNL For a figure of the signal leads used when Emulate is set to DTE and Gen Clk is set to INTRNL, see Figure B-3. TC (From DCE) TC (From DTE) INTF DATA...
Page 243: B-5 Dce/Intrnl/St Diagram
INTERCEPTOR 147 2 Mbit/s and Data Analyzer DCE/INTRNL/ST For a figure of the signal leads used when Emulate is set to DCE, Gen Clk is set to INTRNL, and Rcv Clk Sel is set to ST, see Figure B-5. DATA...
Page 244 INTERCEPTOR 147 2 Mbit/s and Data Analyzer DCE/INTF/TT For a figure of the signal leads used when Emulate is set to DCE, Gen Clk is set to INTF, and Rcv Clk Sel is set to TT, see Figure B-6. DATA...
Page 245: Remote Control Status Registers
INTERCEPTOR 147 2 Mbit/s and Data Analyzer REMOTE CONTROL STATUS REGISTERS The INTERCEPTOR 147 uses a set of internal registers, queues, and buffers to store information about test status, line conditions, alarm conditions, error conditions, and print information. The user may access this information by using INTERCEPTOR 147 status queries.
Page 246: C-2 Register Operation
INTERCEPTOR 147 2 Mbit/s and Data Analyzer Each group of registers contains one writable 8-bit enable register. The user may program the bits in each enable register to report selected events in the corresponding status register. Setting the bits in the enable register controls the generation of the summary bit for each register group.
Page 247: C.2 Queue And Buffer Operation
The Status Byte Register contains summary bits from the data structures that report to it. Each bit reports whether a specific event or condition has occurred. INTERCEPTOR 147 defines 6 of the 8 bits in the Status Byte Register; the other 2 bits are always set to 0.
Page 248 INTERCEPTOR 147 2 Mbit/s and Data Analyzer EVENT SUMMARY TEST SUMMARY BIT PRINT AVAILABLE ERROR AVAILABLE MASTER STATUS SUMMARY STATUS BYTE REGISTER (*STB?) SERVICE REQUEST ENABLE REGISTER Figure C-3 Status Byte Register The controller reads the Status Byte Register by using a serial poll or the *STB query.
Page 249 INTERCEPTOR 147 2 Mbit/s and Data Analyzer Bit 4 Not Defined. Always set to 0. Bit 3 Not Defined. Always set to 0 Bit 2 Bit 2 indicates that an enabled event in the Test Summary Register has occurred. Read the Test Summary Register to determine which event has occurred.
Page 250: C.4 Event Status Register Group
INTERCEPTOR 147 2 Mbit/s and Data Analyzer EVENT STATUS REGISTER GROUP The Event Status Register group is used to detect specific IEEE-488.2 defined events, and consists of two, 8-bit registers: Event Status Register and Event Status Enable Register. See Figure B-4.
Page 251 INTERCEPTOR 147 2 Mbit/s and Data Analyzer Bit 5 CME - Command Error Indicates that a command received by the INTERCEPTOR 147 was not executed because it was not understood. Bit 4 EXE - Execution Error Indicates that the INTERCEPTOR 147 is unable to execute a command.
Page 252: C.5 Test Summary Register Group
INTERCEPTOR 147 2 Mbit/s and Data Analyzer TEST SUMMARY REGISTER GROUP The Test Summary Register is an 8-bit register that contains summary bits from the data structures reporting to it. Figure B-5 depicts this register. In this example, only 3 of the 8 bits are used.
Page 253: C.6 Line Status Register Group
INTERCEPTOR 147 2 Mbit/s and Data Analyzer LINE STATUS REGISTER GROUP The Line Status Register group consists of three registers: Line Status Register, Line History Register, and Line Enable Register. This group of registers is used to detect the state of the signal presence indicator, the various FAS Sync indicators, the pattern slip indicator, and an alarm indicator.
Page 254 Bit 7 Not used. Always set to 0. Bit 6 Not used. Always set to 0. Bit 5 Set to 1 when the INTERCEPTOR 147 has detected CRC framing. Bit 4 PATTERN INVERT Set to 1 when the INTERCEPTOR 147 has detected pattern inversion.
Page 255 INTERCEPTOR 147 2 Mbit/s and Data Analyzer The Line History Register is read using the query, STATUS:LINE HIST?. Bit 7 PATTERN SLIP Indicates that a pattern slip occurred since this register was last read. Bit 6 Not Used. Always set to 0 Bit 5 Not Used.
Page 256: C.7 Alarm Status Register Group
INTERCEPTOR 147 2 Mbit/s and Data Analyzer ALARM STATUS REGISTER GROUP The Alarm Status Register group consists of three registers: Alarm Status Register, Alarm History Register, and Alarm Enable Register. See Figure C-7. MFAS DIST FAS DIST FAS TS16 ALARM...
Page 257 INTERCEPTOR 147 2 Mbit/s and Data Analyzer Bit 3 MFAS Distant Indicates that the MFAS Distant alarm is active. Bit 2 FAS Distant Indicates that the FAS Distant alarm is active. Bit 1 TS-16 AIS Indicates that the TS-16 AIS is active.
Page 258 INTERCEPTOR 147 2 Mbit/s and Data Analyzer Bit 0 Indicates that AIS was detected since this register was last read. The Alarm Enable Register is used to determine how the Alarm Status Summary bit of the Test Summary Register is set. The Alarm Status Summary bit is set when corresponding bits in the Alarm History Register and the Alarm Enable Register are set.
Page 259: Performance Analysis
INTERCEPTOR 147 2 Mbit/s and Data Analyzer UNDERSTANDING G.821 PERFORMANCE ANALYSIS WHY CCITT G.821 PERFORMANCE ANALYSIS? This appendix discusses the criteria for performance analysis, the concept of available time versus unavailable time, and degraded minutes as specified in CCITT Recommendation G.821. This discussion is provided to familiarize users with the G.821 Performance results.
Page 260: D.3 Determining Available And Unavailable Seconds
INTERCEPTOR 147 2 Mbit/s and Data Analyzer DETERMINING AVAILABLE AND UNAVAILABLE SECONDS CCITT Recommendation G.821 defines available and unavailable time as follows. “A period of unavailable time begins when the bit error rate (BER) in each second is worse than 10 for a period of 10 consecutive seconds.
Page 261 INTERCEPTOR 147 2 Mbit/s and Data Analyzer Even though there were 3 consecutive seconds (the 26th, 27th, and 28th) which each had a BER greater than 10 , 10 such consecutive seconds are required to make the transition to unavailable time. Those 3 individual seconds are still in available time and they are counted as Avl Sec.
Page 262: Test Second Transition To Unavailable Time
INTERCEPTOR 147 2 Mbit/s and Data Analyzer The same test continues to run and remains in available time. In the 80th second, the BER for that second is greater than 10 as shown in Figure D-3. The BER for the 81st through the 85th seconds is also greater than 10 .
Page 263: Test Second Transition To Available Time
INTERCEPTOR 147 2 Mbit/s and Data Analyzer . We are still in unavailable time, so these seconds are counted as Unavl Sec; now the total Avl Sec count = 79 and the total Unavl Sec count = 71. < <...
Page 264: D.4 Determining Degraded Minutes
INTERCEPTOR 147 2 Mbit/s and Data Analyzer DETERMINING DEGRADED MINUTES Degraded minutes (Deg Min) is an error analysis result that is affected by available and unavailable time. Deg Min is a count of the number of minutes during which an average BER greater than 10 occurs.
Page 265: Understanding Histograms
INTERCEPTOR 147 2 Mbit/s and Data Analyzer UNDERSTANDING HISTOGRAMS The INTERCEPTOR 147 can produce Graph and List Histogram Prints. To understand the information that appears in both types of Histogram Prints, read the information in this appendix. UNDERSTANDING HISTOGRAM GRAPHS GRAPH-type histograms provide a graphical depiction of test results over a period of time.
Page 266 INTERCEPTOR 147 2 Mbit/s and Data Analyzer Time and Date of Print At the top of Histogram Print, is the time and date when the histogram was created. Histogram Title The histogram title indicates what result is being histogrammed. For example, depending on the...
Page 267 INTERCEPTOR 147 2 Mbit/s and Data Analyzer Results (Bar Graph) The vertical bars on the Histogram Print indicate how many of the specified events occurred at the indicated times. Mode Change Indicator(s) When a mode change occurs, the Mode Change Indicator appears as an “M”...
Page 268: E.2 Understanding Histogram Lists
INTERCEPTOR 147 2 Mbit/s and Data Analyzer Seconds Per Bar (Seconds) — Amount of time (in number of seconds and in Day/ Hour:Minute:Second format) covered by each results bar. Two results bars can fit between two consecutive marks on the x-axis.
Page 269 INTERCEPTOR 147 2 Mbit/s and Data Analyzer =================================== HISTOGRAM PRINT 13:55:36 1-Apr-1994 Bit Errs 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,6643,2699,0,0,473,1902,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0.0.0 *Storage 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,3, 2,1,1,1,1,1,3,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,4,1,4,1 *Power 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,5, 5,0,2,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,1,5,1 *Modechng 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,5, 5,0,0,1,0,0,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,0,5,1 Start Of Acquisition: 23:49:42 30-Oct-1994 Start Of Print (DD/HH:MM): 00/00:00 Duration Of Print (DD/HH:MM):...
Page 270 INTERCEPTOR 147 2 Mbit/s and Data Analyzer Transition Information Labeled Avl Sec, Storage, and Power The Transition Information lines correspond to the Transition Bars available with Graph histograms. In List histograms, the transition information is indicated by a list of numbers (separated by commas).
Page 271: Index
INTERCEPTOR 147A 2Mbit/s Analyzer INDEX Symbols %Avl Sec Result 4-13 ABCD Result 4-11 %EFS Result 4-14 AC Mains ADAPTER %SES Result 4-13 Connector 2-22 ∆PPM 3-15 Active Timeslots 120-Ω Connector 2-4 definition 4-11 2 %Avl T Result 4-14 Active Timeslots Result 2 %EFS Result 4-15 4-11 2 %SES Result 4-15...
Page 272 INTERCEPTOR 147A 2Mbit/s Analyzer BATTERY CHARGING Code Rate Result 4-6 LED 2-22 Configuration BATTERY LOW LED 2-16 recalling 3-54 BATTERY LOW! 2-17 saving 3-53 Battery operation CONFIGURATION life 1-5 Category 3-8 Beeper item 3-55 Connecting BER Result 4-3 to a Printer 2-23 BER-SES Result 4-14 Connectors BIT (FAS Results) 3-55...
Page 273 INTERCEPTOR 147A 2Mbit/s Analyzer Display 2-18 freezing 2-17 FAS 3-13 up/down arrows 2-18 FAS Errs Result 4-6 DISPLAY HOLD 2-17 FAS Rate Result 4-6 FAS Results item 3-55 FAS Word Result 4-7 EFS Result 4-14 FAS-CRC 3-13 Elapsed Second Result FOX pattern 3-22 FRAME 3-44 Elpsd Sec Result 4-3...
Page 274 Procedure 1-6 Memory Clear? item Inserting Errors 2-5 3-56 INT 2048K Clock Source Message 3-15 Are You Sure? 3-57 INTERCEPTOR 147 BATTERY LOW! 2-17 Applications 1-2 Clear Buffer 3-48, Key features 1-2 3-52 Standard Equipment Clearing Histogram Data 3-48, 3-53...
Page 275 INTERCEPTOR 147A 2Mbit/s Analyzer No Such Event 3-50 Processing Histogram Octet Timing item 3-27 3-50 RECALLING PROGRAM 3-54 PANEL LOCK 2-17, 6-2 Results OK 4-2 Results Unavail 4-2 Patt Loss Result 4-3 Patt Slip Result 4-3 Start Time/Stored Time Pattern 3-50 selecting 3-20 STORING PROGRAM...
Page 276 Results Print 5-2 Remote Control selecting types 3-42 Commands and time interval between Queries 6-3 3-44 configuring the TIMED 3-43 INTERCEPTOR 147 Timed Print 5-4 Program Pattern item connecting cables 6-2 3-23 ending 6-3 Program Recall item entering 6-2 3-54...
Page 277 INTERCEPTOR 147A 2Mbit/s Analyzer port configuration Err-SES 4-14 3-47 FAS Errs 4-6 port selecting 3-45 FAS Rate 4-6 setup 6-2 FAS Word 4-7 syntax for commands Frame Slip 4-6 Freq 4-5 Freq ∆ppm 4-5 RESTART 2-17 Restart 1-10 Level 4-12 RESTRICTED 3-5 Level (dBnom) 4-6 Result...
Page 278 INTERCEPTOR 147A 2Mbit/s Analyzer RESULTS PRINT Site ID Item 3-42 Signaling Summary SL Delay Result 4-4 format 5-4 Speaker Standard format 5-3 description 2-20 Summary format 5-4 when active 3-4 Results Print Start item 3-51 exampes 5-3 Starting a new test 2-17 Results Unavail 4-2 STATUS DATA INTERFACE Round Trip Delay 3-22...
Page 279 INTERCEPTOR 147A 2Mbit/s Analyzer Timeslots active 4-11 V.11 (T/U) item 3-27 Broadcast 3-32 V.11 interface 3-6 receive 3-32 V.24 ASYNC 3-6 Restricted 3-5 pattern used for 3-22 selected 3-23 V.24 SYNC 3-6 selecting 3-28, 3-32 V.24A Data Bits item transmit 3-32 3-27 unselected 3-11 V.24A Parity item 3-26...
Page 280 INTERCEPTOR 147A 2Mbit/s Analyzer INDEX-10...

Telecommunications Techniques Corporation interceptor 147 Reference Manual

Section Page

Getting Started

Printer / Remote

Appendix

Data Communication Interfaces

Instrument Description

Figure

Section

Setup Categories

Understanding

Test Results

Using a Printer

Remote Control

Applications

7-3Section

Specifications

Maintenance and Service

Understanding Histograms

Index

Quick Links

Troubleshooting

Need help?

Questions and answers

Summary of Contents for Telecommunications Techniques Corporation interceptor 147

Table of Contents