Page 1 COMMUNICATIONS TEST EQUIPMENT R2600 Series Communications System Analyzer OPERATOR'S MANUAL GENERAL DYNAMICS DECISION SYSTEMS Communications Test Equipment 8201 E. McDowell Rd. Scottsdale, Arizona 85257 COPYRIGHT  1996 - 2004 GENERAL DYNAMICS ALL RIGHTS RESERVED Printed in U.S.A. 68-P30700C001 Rev. J...
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Page 3: Table Of Contents
Table of Contents Topic Page LIMITED WARRANTY ..........................xiii SOFTWARE LICENSE AGREEMENT ....................xiv SERVICE LOCATIONS ........................... xv Section 1 INTRODUCTION Topic Page SCOPE OF MANUAL ............................ 1 VERWENDUNGSZWECK........................... 2 SAFETY SUMMARY............................1 1-2.1 Grounding the Analyzer........................1 1-2.2 Unit is Live When Plugged In ......................1 1-2.3 Keep Away From Live Circuits......................
Page 4: Topic Page
Table of Contents (CONT) Section 1 INTRODUCTION (CONT) Topic Page GEFAHRENHINWEISE..........................4 1-3.1 Betriebsspannung ..........................4 1-3.2 Betrieb mit Gleichspannung ......................4 1-3.3 Maximale Eingangsspannung des Digitalvoltmeters..............4 1-3.4 Ersatz von Sicherungen........................6 1-3.5 Sonstige Vorsichtsmaßnahmen ......................8 1-3.6 Ersatz und Entsorgung von Akkus ....................8 1-3.7 Reinigung .............................
Page 5 Table of Contents (CONT) Section 2 DESCRIPTION Topic Page DESCRIPTION ..............................13 OPERATOR CONTROLS...........................13 2-2.1 Keys & Indicators..........................13 2-2.2 Knobs..............................17 2-2.3 DISPLAY ............................17 2-2.4 Connectors ............................17 2-2.4.1 Front Panel Connectors ....................17 2-2.4.2 Side Panel Connectors......................18 2-2.4.3 Back Panel Connectors ....................18 BOTTOM CONTROLS..........................18...
Page 6 Table of Contents (CONT) Section 3 OPERATING INSTRUCTIONS Topic Page GENERAL...............................19 BASIC OPERATION ............................19 3-2.1 Remote Operation..........................19 3-2.2 Expanded Display ..........................21 3-2.2.1 Spectrum Analyzer, Scope Waveforms or Bargraph Display........21 3-2.2.2 Display Tables ........................21 3-2.2.3 Dedicated Keys........................21 HELP ................................21 WARNINGS..............................23 PRIMARY OPERATING MODES......................24 3-5.1 MONITOR Mode..........................24 3-5.1.1Phase Modulation........................25...
Page 7 Table of Contents (CONT) Section 3 OPERATING INSTRUCTIONS (CONT) Topic Page 3-7.1.5 SINAD Meter ........................43 3-7.1.6 Counter and Decoding Functions ..................43 3-7.1.7 CABLE FAULT (if equipped) ....................45 3-7.1.8 GENERAL SEQ DECODE....................46 3-7.1.9 Preset Scan (if equipped)......................47 3-7.2 Display..............................49 3-7.2.1 Spectrum Analyzer........................49 3-7.2.2 Modulation Scope .........................52 3-7.2.3 EXT'L SCOPE........................55 3-7.2.4 SWEEP GENERATE......................55...
Page 8 Table of Contents (CONT) Section 4 APPLICATIONS Topic Page BASIC FM TRANSMITTE TESTING ......................64 4-1.1 Basic FM Transmitter Testing Setup.....................65 4-1.2 Transmit Power, Frequency, and Frequency Deviation Measurements .........65 4-1.3 Modulation Measurements......................66 4-1.4 Off-The-Air Measurements ......................68 BASIC FM RECEIVER TESTING ......................69 4-2.1 Basic FM Receiver Testing Setup....................70 4-2.2...
Page 9 APPENDICES Topic Page Appendix A LIST OF ABBREVIATIONS........................A-1 Appendix B TONE AND CODE SPECIFICATIONS....................B-1 Appendix C SAFE HANDLING OF CMOS INTEGRATED CIRCUIT DEVICES...........C-1 Appendix D EXTERNAL PORT PIN ASSIGNMENTS ................... D-1...
Page 10 List of Figures Page Figure 1-1. 115 VAC/230 VAC Selection Switch ......................9 Abb. 1-1. Spannungswähler für 115 / 220 VAC .....................10 Figure 1-2. Battery Pack Installation...........................11 Abb. 1-2. Installation des Akkusatzes ........................12 Figure 2-1. Front Panel Controls, Indicators, and Connectors ................14 Figure 2-2.
Page 11 List of Figures (CONT) Page Figure 3-25. Memory Screen with Full Test Setups Option ..................63 Figure 4-1. Basic FM Transmitter Testing Setup......................64 Figure 4-2. Basic FM Receiver Testing Setup ......................69 Figure 4-3. Basic Cable Testing Setup........................76 Figure 4-4. Tone Remote Testing Setup ........................79 Figure D-1.
Page 12 List of Tables Page Table 1. Operator Replaceable Fuses........................5 Table 2. Internal Fuses............................5 Tabelle 1. Sicherungen, die vom Benutzer gewechselt werden können ............6 Tabelle 2. Interne Sicherungen ..........................6 Table B-1. Standard DTMF TONES ........................B-1 Table B-2. DTMF Frequency Coding* .........................B-1 Table B-3.
Page 13: Limited Warranty
Dynamics Communications Test Equipment within General Dynamics Decision Systems (herein General Dynamics) are warranted by General Dynamics for a period of one (1) year from date of shipment against defects in material and workmanship. This express limited warranty is extended to the original purchaser (herein the "Licensee") only and...
Page 14: Software License Agreement
DOCUMENTATION such that its functional performance is significantly affected and LICENSOR is notified in writing within ninety (90) days from the date of purchase along with a copy of the receipt of purchase, General Dynamics Decision Systems shall have the option of refunding the purchase price or replacing the SOFTWARE as LICENSEE’S exclusive remedy.
Page 15: Service Locations
SERVICE LOCATIONS SINGAPORE Motorola Test Equipment Service Center Motorola Electronics Pte Ltd. 2216 Galvin Drive 10 Ang Mo Kio Street 65 Elgin Il. 60123 #01-01 Tech Point Building Ph: 800-323-6967 Singapore, 569059 847-783-2952 Ph: 65-4867199 FAX: 847-783-2955 Fax: 65-4846123 CANADA AUSTRALIA Motorola Canada Limited 473-479 Swan Street...
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Page 17: Introduction
Personnel other qualified maintenance General Dynamics is aware. You as the user of personnel may remove equipment covers for the product, should follow these warnings and all internal subassembly or component replacement other safety precautions necessary for the safe or any internal adjustment.
Page 18: Sicherheitshinweise
Techniker und sonstiges qualifiziertes gegen die Sicherheitsstandards der Entwicklung, Personal dürfen die Geräte-Abdeckungen öffnen, Herstellung bestimmungsgemäßen um Teile zusammenzubauen bzw. zu ersetzen Gebrauchs des Gerätes dar. General Dynamics oder Einstellungen vorzunehmen. Vor dem lehnt jede Haftung für die Nichtbeachtung dieser Öffnen, muß Gerät allen Vorschriften seitens des Kunden ab.
Page 19: 1-3.2 Dc Power Source
1-3.1 Analyzer Operating Voltage 1-2.4 Explosive Atmosphere Before plugging in an AC power cable, verify Do not operate the equipment in the presence of that the selector switch located on the underside flammable gases or fumes. Operation of any of the unit is set to the correct operating electrical equipment in such an environment voltage.
Page 20: Gefahrenhinweise
1-3.1 Betriebsspannung 1-2.4 Betrieb in einer explosionsgefährdeten Vor dem Anschluß des Funkmeßplatzes an das Umgebung Netz sicherzustellen, daß Das Gerät darf in einer explosionsgefährdeten Spannungswähler auf der Unterseite des Gerätes Umgebung nicht betrieben werden. Brennbare die richtige Netzspannung eingestellt ist. Bei Gase oder Dämpfe in der Nähe des Gerätes Verwendung eines...
Page 21: Table 1. Operator Replaceable Fuses
1-3.4 Replacement Fuses For continuous protection against risk of fire, Other fuses are located inside the Analyzer and replace only with a fuse of the same type and should be replaced by Factory Authorized rating. Part numbers for replacement fuses are Service Personnel or other qualified maintenance shown in Tables 1 and 2.
Page 22: 1-3.4 Ersatz Von Sicherungen
1-3.4 Ersatz von Sicherungen Teilenummern für Ersatzsicherungen gehen aus Damit kontinuierlicher Schutz gegen Tabellen hervor. Weitere Feuergefahr gegeben ist, darf eine Sicherung nur Sicherungen im Inneren des Gerätes dürfen gegen eine solche des gleichen Typs und mit dem jedoch nur von autorisiertem bzw. qualifiziertem gleichen Sicherungswert ersetzt werden.
Page 23: Service
Analyzer's The Motorola Test Equipment Service Centers rear panel. Connect the other end of the service all R2600 Series Communications System cord to the power source. For AC, use a Analyzers. The Centers maintain a stock of...
Page 24: 1-3.5 Sonstige Vorsichtsmaßnahmen
INSTALLATION 1-3.5 Sonstige Vorsichtsmaßnahmen 1-6.1 Verpackung Weitere wichtige Hinweise zum Betrieb des Funkmeßplatzes sind in diesem Handbuch durch Im Verpackungskarton wird der Funkmeßplatz Kursivschrift kenntlich gemacht. von Schaumstoffteilen geschützt. Verwahren Sie sämtliche Teile der Verpackung für eine 1-3.6 Ersatz und Entsorgung von Akkus eventuelle spätere Verwendung.
Page 25: 1-6.3 Battery Pack Operation
1-6.3 Battery Pack Operation 7. Insert the whip antenna into the ANT port, located to the right of the tuning knob on the The optional battery pack (RPN-4000A) is front panel. designed to conveniently mount to the back of the Analyzer.
Page 26: 1-6.3 Betrieb Mit Akkusatz
Funkmeßplatzes anflanschen. Da der Akkusatz 7. Stecken Sie die Stabantenne in die ANT- über ein integriertes Ladegerät verfügt, wird er Buchse rechts neben dem Abstimmknopf automatisch aufgeladen, sofern er an einer auf der Frontplatte. Netzsteckdose angeschlossen ist. 8. Drücken Sie den Netzschalter auf ON. Der Ladevorgang verläuft unabhängig...
Page 27: 1-6.4 Battery Pack Installation
4. Plug AC cord from battery pack to AC 1-6.4 Battery Pack Installation power plug on back of Analyzer. 1. Set the Analyzer in an inverted vertical 5. Dress cabling into retaining area and slide position on a table with the back of the unit battery into position to align with mounting facing upward.
Page 28: 1-6.4 Installation Des Akkusatzes
1-6.4 Installation des Akkusatzes 4. Stecken Sie das Netzkabel des Akkusatzes in den Netzstecker auf der Rückseite des 1. Stellen Sie den Funkmeßplatz kopfüber auf Funkmeßplatzes. einem Tisch mit der Rückseite nach oben. 5. Legen Sie das Kabel in die entsprechende 2.
Page 29 Section 2 DESCRIPTION DESCRIPTION OPERATOR CONTROLS R2600 Series Communication System Analyzers 2-2.1 Keys & Indicators are portable test instruments designed to monitor Power Switch and service radio communications equipment over the frequency range of 400 Hz to 999.9999 Press ON to energize all circuitry.
Page 30: Figure 2-1. Front Panel Controls, Indicators, And Connectors
GENERAL DYNAMICS COMMUNICATION SYSTEM ANALYZER TUNING MAX INPUT CURSOR ZONE 0dBM DISP CONTROL CURSOR POSITION DISPLAY AUDIO CONTROL HELP SQUELCH VOLUME BRIGHT POWER CAUTION RF IN/OUT DO NOT VERT/SINAD INPUT DIST/DVM DEMOD CAUTION POWER COUNTER IN 125W MAX SOFTKEY LABELS SOFTKEYS Figure 2-1.
Page 31: Figure 2-2. Side, Rear, And Bottom Panels
RS-232 PORT FUSES 10 MHZ REFERENCE OSCILLATOR IN/OUT DC INPUT PWR CONNECTOR INTERNAL/EXTERNAL REFERENCE OSCILLATOR SWITCH AC PLUG REFERENCE OSCILLATOR CALIBRATION ADJUST LINE VOLTAGE SELECTOR SWITCH VGA PORT (BOTTOM SIDE) Figure 2-2. Side, Rear, and Bottom Panels...
Page 32 SPF Key Keys (0-9) Displays the special functions menu of the For entering numeric information into the display. analyzer. When a key is pressed, the existing display numeral (where the cursor is sitting) is PRT Key replaced with the numeral represented by the Sends the data contents of the displayed screen to keypress.
Page 33 2-2.2 Knobs 2-2.4 Connectors 2-2.4.1 Front Panel Connectors Squelch Squelch control. Clockwise rotation increases RF IN/OUT the receiver threshold signal level above which Provides RF input signal to the analyzer's internal the squelch opens. monitor or output signal from the analyzer's internal generator.
Page 34 BOTTOM CONTROLS DEMOD OUT Recovered (demodulated) audio output Internal/External Oscillator Micro-Switch (MONITOR or DUPLEX mode). Used to switch between input and output configurations for the rear panel 10 MHz MOD OUT reference oscillator BNC connector. Composite output internally generated modulation signals. CAUTION The analyzer will not function properly if this EXT MOD IN...
Page 35: Operating Instructions
Display area at may be used to remotely control the analyzer the lower left of the screen. using a set of commands, queries, and responses that are defined in the General Dynamics R2600 Control of the internal modulation synthesizer Series Communications...
Page 36: Figure 3-1. Screen Zone Arrangement
RF ZONE DISPLAY ZONE AUDIO ZONE Figure 3-1. Screen Zone Arrangement...
Page 37: 3-2.2 Expanded Display
NOTE To control the cursor location and input informa- tion by: To escape from a decode display table, return the cursor to the "Meter:" field and make an Use the CURSOR ZONE keys to move the alternate selection. cursor among the three zones. Encode Tables are selected from the "Audio Mod Use the CURSOR POSITION keys to move the Sum:/Mod Sum:"...
Page 38: Figure 3-2. System Help
Figure 3-2. System Help...
Page 39: Warnings
If any of these conditions exist: WARNINGS A warning will be displayed on the warning The system provides warnings for the following line of the LCD for RF overload, recalibrate, operating conditions, which are considered and low battery voltage. detrimental to the proper functioning of the analyzer: A continuous audible warning tone along with an overwrite of the screen with a warning...
Page 40: Primary Operating Modes
PRIMARY OPERATING MODES 3-5.1 MONITOR Mode The Monitor mode (figure 3-4) provides the Select the operating mode by placing the cursor analyzer's test receiver function which is used in the "RF Control:" field in the RF zone. Use in the testing of radio transmitters. It is capable the desired softkey to make selection.
Page 41: 3-5.1.1Phase Modulation
Specific controls which further configure the "off-the-air" reception. Selection of the ANT MONITOR mode are located within the RF zone port is indicated by a red LED adjacent to the when MONITOR is first selected. The specific ANT connector. entry fields are as follows. CAUTION Preset Do not apply input power to the ANT input...
Page 42: 3-5.2 Generate Mode
Figure 3-5. Phase Modulation signals can be simultaneously impressed on the 3-5.2 GENERATE Mode carrier frequency to generate composite signals The GENERATE mode (figure 3-6) configures for servicing. Signals from 400 kHz to 999.9999 the Analyzer to generate an RF signal at a MHz may be generated.
Page 43 NOTE Specific controls which further configure the GENERATE mode are located within the RF If AM modulation is selected, the maximum Control zone when GENERATE is first selected. output at the GEN port is reduced to -6 dBm; the maximum output at the RF I/O port is The specific entry fields are as follows: reduced to -56 dBm.
Page 44: 3-5.3 Duplex Mode
3-5.3 DUPLEX Mode The DUPLEX Mode (figure 3-7) provides a This capability provides for servicing full duplex simultaneous RF generator output that is offset in radio equipment as well as repeaters and radios frequency from the monitor center frequency and operating with offset transmit and receive fre- fully adjustable in output level.
Page 45 Specific controls which further configure the This field actually contains two separate fields, DUPLEX mode are located within the RF one for monitor input attenuation and one for Control zone when DUPLEX is first selected. monitor port selection. Refer to the MONITOR The specific entry fields are as follows: description for further details.
Page 46: 3-5.4 Sweep Generate Mode
3-5.4 SWEEP GENERATE Mode display can be accessed by selecting SWEEP GENERATE within the "Display:" field. A The SWEEP GENERATE Mode (figure 3-8) pro- suitable RF detector probe should be used to vides a sweep generator function with variable connect from the output of the circuit under test level, rate, and bandwidth.
Page 47 Specific controls which further configure the SWEEP GENERATE mode are located within the RF Control zone when SWEEP GENERATE is first selected. The specific entry fields are as follows: Selects the RF frequency range over which the generator will sweep. Specific ranges are selectable via softkeys.
Page 48: 3-5.5 Tracking Generator Mode (If Equipped)
thru the "Mon:" field in the RF Control zone. If 3-5.5 TRACKING GENERATOR Mode input attenuation is needed as part of the mea- (if equipped) surement procedure, 20 or 40 dB attenuation The TRACK GENERATOR mode (figure 3-9) may similarly be selected thru the "Mon:" field sets up the units signal generator in a sweeping in the RF Control zone.
Page 49 All adjustments of center frequency, frequency range and generator level are made thru the RF zone at the upper right of the screen. The TUNING control is especially useful in tuning center frequency and generator level. These may all be adjusted as follows, thru softkeys or numeric entry, for the desired display, depending on the type of network being tested.
Page 50: Audio/Modulation Synthesizer
AUDIO/MODULATION 5/6 TONE, A/B SEQUENCE, GENERAL SYNTHESIZER SEQUENCE, and TONE REMOTE. A single burst sequence is shown by the "*" symbol. The Audio zone located at the lower right of the screen is used to control the multi-purpose audio For DPL, select the START DISC TN (*) softkey synthesizer section of the unit.
Page 51: Figure 3-10. Pl Format Selection
Figure 3-10. PL Format Selection DPL/DPL Invert Select V This softkey selects standard or inverted This softkey selects a number of international Motorola Digital Private-Line coded squelch. A formats for five-tone sequential signaling. This single cursor field is located below the "Format selection produces two additional fields on the Sel:"...
Page 52 General SEQ Tone Remote Selects a free-form 20-tone sequence encoding Selects the specialized tone sequence used in which has full flexibility to enter unique control of tone remote equipment. The frequen- frequency and time duration for each of the 20 cies used are the same as those for the A/B tone slots.
Page 53: Figure 3-11. General Sequence Mode Select
Figure 3-11. General Sequence Mode Select...
Page 54: 3-6.3 Dtmf
METER AND DISPLAY 3-6.3 DTMF The display of metered data is presented both Provides means encoding DTMF digitally and graphically within the Display zone (Dual-Tone Multi-Frequency) signaling in the left portion of the screen (figure 3-12). testing telephone interface systems. Enter level This zone is divided into two separate display as previously described and enter "Code:"...
Page 55: Figure 3-12. Rf Display Zone
Figure 3-12. RF Display Zone...
Page 56: 3-7.1.2 Rf Scan
Dev/%AM When DUPLEX mode is selected, the RF Display Indicates the modulation level of the received area reflects a combination of the monitor and carrier, dependent upon the modulation type generator data, as previously described. selected in the RF Control zone. If the receive When SWEEP GENERATE mode is selected, phase modulation option is installed and selected the RF Display area reflects the same data as in...
Page 57: 3-7.1.3 Ac/Dc Voltmeter
3-7.1.3 AC/DC Voltmeter It provides an RF frequency counter function where the monitor scans over a selected fre- The analyzer provides a general purpose AC/DC quency range and locks on to the carrier that is digital voltmeter (figure 3-14). The voltmeter applied to its input.
Page 58: Figure 3-14. Digital Voltmeter Screens
Figure 3-14. Digital Voltmeter Screens...
Page 59: 3-7.1.4 Int Dist/Ext Dist Meter
either direct or "off-the-air" testing. If use of 3-7.1.4 INT DIST/EXT DIST Meter these functions is needed for an externally The internal and external distortion meter are applied signal, the Special Functions screen, selectable via softkeys located within the "Me- under SYSTEM FUNCTIONS, provides a means ter:"...
Page 60: Figure 3-15. Frequency Counter
CAUTION FREQ CNTR This softkey provides a general purpose fre- Do not input frequencies above 400 kHz to the quency counter (figure 3-15) for Audio and IF period counter. Slow down of system frequency measurements up to 500 kHz. For RF operations will result.
Page 61: 3-7.1.7 Cable Fault (If Equipped)
location in the Display zone as shown in 3-7.1.7 CABLE FAULT (if equipped) figure 3-16. This automatically selects the This feature provides the capability to test appropriate displays in the RF Control and 50 ohm cables damage mis- Display zone. The main operation of this feature terminations through a simple connection to the is controlled thru the "Meter:"...
Page 62: 3-7.1.8 General Seq Decode
SEL V Decode 3-7.1.8 GENERAL SEQ DECODE This softkey provides a decoding function for a This softkey provides a free-form decoding number of standard international Select V function for individual frequency and time sequential tone signalling formats. Selection of duration of tone sequences up to 20 tones. this mode overwrites the entire display section of Selection of this mode overwrites the entire the screen and provides a detailed display of data.
Page 63: 3-7.1.9 Preset Scan (If Equipped)
To activate the Preset Scan function, press the 3-7.1.9 Preset Scan (if equipped) PRESET SCAN softkey (figure 3-17). This key The analyzer provides a preset scan function in not only begins the preset scanning but also which the preset monitor frequencies stored in serves as a "continue key"...
Page 64 by moving it within the RF memory table to a To halt the scanning operation at any time, press location just above or below the preset numbers the RF DISPLAY softkey. This stops the scanning being scanned. process and leaves the analyzer locked onto the last scanned frequency prior to the key press.
Page 65: 3-7.2 Display
If a larger display area is desired, press the 3-7.2 Display expand softkey. (A return softkey is available in Any of the following graphic data displays can be the expanded mode allowing return to the normal selected for simultaneous display along with the display).
Page 66 Freeze - Sensitivity Pressing this softkey provides immediate The SA "Sensitivity: MIN/MAX" field shifts the storage of a spectrum display. This allows cap- baseline reference of the display by 10 db. This is ture of intermittent transmissions etc. for more valid only for 0 db input attenuation.
Page 67: Figure 3-19. Spectrum Analyzer Markers (Option)
dotted marker line represents one that is movable continuously show the relative level and using the Tuning Knob. Set this marker to a point frequency difference between the two points of interest on the display and then press the selected. Selection of ABS (absolute) mode pro- "toggle marker"...
Page 68: 3-7.2.2 Modulation Scope
3-7.2.2 Modulation Scope The Modulation Scope (figure 3-20) displays the To change triggering, horizontal position, horiz- internal modulation waveforms. It automatically ontal range, vertical position, or vertical range, switches between generator or monitor modula- use the cursor control keys to highlight the tion depending on which mode is selected.
Page 69 100 Hz to 50 kHz per division, dependent on In SINGLE SWEEP mode, the scope will trigger bandwidth selected). When all ranges cannot be one time for each softkey press, subject to the shown on one screen, press the more softkey for trigger level setting (triggering always occurs on additional selections.
Page 70: Figure 3-21. Modulation Scope Markers (Option)
∆ ∆ This key selection provides markers that are This softkey selection provides markers that are horizontally located to permit relative readings also vertically located to permit relative readings along the scope vertical axis. The display along the scope horizontal axis. This selection adjacent to the "Mrk:"...
Page 71: 3-7.2.3 Ext'l Scope
Refer to Sweep Generator description under 3-7.2.3 EXT'L SCOPE Primary Operating Modes (paragraph 3-5.4). The analyzer provides a general purpose oscillo- scope with calibrated vertical input sensitivities To change coupling from AC to DC, or vary and automatic or triggered horizontal sweep horizontal position, vertical position, or vertical rates.
Page 72: Figure 3-22. Bar Graphs
Figure 3-22. Bar Graphs...
Page 73: 3-7.2.6 Tracking Generator (If Equipped)
This assures the unit's specification ac- NOTE curacy under conditions of ambient temper- The Freq. Error bar graph is not available if ature extremes and aging. Re-calibration is SCAN, PL/PER COUNTER, recommended at weekly intervals or when DECODE or FREQ COUNTER are selected the re-calibrate warning appears on the in the "Meter:"...
Page 74: 3-8.4 Special Functions Menu
NOTE Remote Setup Accesses a display table which allows configura- Subsequent presses of the PRT key before tion of the RS-232 and printer interface. printing is complete will overwrite the printer buffer. System Functions If using the LX-810S/220 (220 volt operation) Accesses softkeys to select the following: serial/parallel printer with the Analyzer, refer to paragraph 4-5 for a special application note.
Page 75 NOTE Display Timeout Interval Permits the entry of the timeout interval to blank When any of the following special functions the screen after a period of no inputs (key or are selected, the normal operating screens tuning knob) from the operator. will flash a warning SPF Enabled at the lower right of the screen.
Page 76: 3-8.4.1 Special Function Selection
3-8.4.1 Special Function Selection Bandwidth To select a special function follow the following Duplex offset frequency procedure. Audio synthesizer format with applicable frequency, code or sequence 1. Press the SPF key to display the special functions menu on the display. DTMF code 2.
Page 77: Figure 3-24. Memory Screens
Figure 3-24. Memory Screens...
Page 78: 3-8.6 Test Setups (If Equipped)
3-8.6 Test Setups (if equipped) NOTE Test Setups provide the capability to save the Test setups are installed at either the factory entire state of the analyzer in a preset. Fifteen or in the field using the Field Installation additional presets numbered 30 through 44 are Software.
Page 79: Figure 3-25. Memory Screen With Full Test Setups Option
A Test Setup can be recalled from the MEMORY describe that Test Setup. Characters not on the screen using the Recall Preset# softkey or from front panel keypad can be entered using the the preset cursor location in the RF Control Zone. rotary knob.
Page 80: Basic Fm Transmitte Testing
General Dynamics takes no responsibility for on typical test setups to perform some of the application accuracy, applicability, or safety. more common radio tests using R2600 Series Always refer to your own transceiver's service Communications System Analyzers. manual for recommended test methods and spec-...
Page 81: Basic Fm Transmitter Testing Setup
4-1.1 Basic FM Transmitter Testing Setup 4-1.2 Transmit Power, Frequency, and Frequency Deviation Measurements Refer to figure 4-1. Connect the analyzer's RF I/O port to the RF output of the transmitter under 1. With the cursor located within the RF test.
Page 82: Modulation Measurements
4-1.3 Modulation Measurements 4. With the cursor located within the Display zone "Meter:" location, press the 1. Key up the transmitter with appropriate PL softkey: DISPLAY (or DPL) enabled. NOTE If mic pickup results in deviation errors, install the internal 300 Hz lowpass filter as Display detailed in paragraph 3-8.5 before making the following measurements and verifications.
Page 83 NOTE 6. Set the 1 kHz audio modulating signal for maximum level as determined in step 3. The voltage levels displayed in the Audio Repeat steps 4 and 5. Control zone are peak open circuit voltages. Source impedance of the MOD OUT port is 7.
Page 84: 4-1.4 Off-The-Air Measurements
4-1.4 Off-The-Air Measurements 4. Check transmitter frequency and modulation as detailed in paragraphs 4-1.2 and 4-1.3. 1. Connect the supplied antenna to the analyzer's ANT port. Operate the transmitter NOTE under test either into its own antenna or into This method may be used to verify frequency a dummy RF load.
Page 85: Basic Fm Receiver Testing
BASIC FM RECEIVER TESTING This section of the manual contains information The analyzer's DVM input is unbalanced (ground on typical test setups to perform some of the referenced). Use an appropriate interface to more common radio tests using the analyzer. measure balanced circuits, such as certain receiver audio outputs or telephone lines.
Page 86: Basic Fm Receiver Testing Setup
4-2.1 Basic FM Receiver Testing Setup Refer to figure 4-2. Connect the analyzer's RF 3. Within the Audio Control zone, set as I/O port to the radio antenna connector. Connect follows: the radio audio output to VERT/SINAD port of the analyzer. Set to 60% of CAUTION System Deviation...
Page 87: 4-2.2 Receiver Distortion Measurement
6. With the cursor located within the Display 2. Refer to the displayed digital readout and Control zone (at Display:), press the bar graph. Refer to your radio's service softkey. manual to determine if any adjustments are SCOPE required. External Meter: EXTERNAL DIST Scope Output Level: + 14.4 dBm...
Page 88: 4-2.4 Modulation Acceptance Bandwidth
3. Within the RF Control zone, adjust the 3. Increase the deviation level until the SINAD selected RF level until the SINAD reading on meter display returns to 12 dB. SINAD meter averages Increase as (instantaneous reading will vary several dB). required Mod Sum: 0.00 kHz...
Page 89: 4-2.5 Receiver Sensitivity Testing (20 Db Quieting)
4. With the cursor within the RF Control zone, 4-2.5 Receiver Sensitivity Testing press the softkey. (20 dB Quieting) Generator Mode 1. With the cursor located within the RF Softkey Control zone, press the softkey to remove input signal from the radio. DUPLEX Monitor Mode DUPLEX...
Page 90: 4-2.6 Squelch Sensitivity Test
4-2.6 Squelch Sensitivity Test 5. Within the RF Control zone, increase the RF output level until the receiver just 1. With the cursor located within the RF unsquelches. This is the threshold squelch Control zone, press the softkey. sensitivity of the radio. Monitor Mode RF Control: GENERATE...
Page 91 7. To check PL/DPL squelch sensitivity, locate 8. With the cursor located within the Audio the cursor within the Audio Control zone Control zone, turn on the modulation and and enter the proper PL frequency or DPL set the analyzer synthesizer to provide a code per Appendix B.
Page 92: Cable Testing (If Equipped)
CABLE TESTING (if equipped) 4-3.1 Overview under test such as an open or shorted connector, a The analyzer cable fault test system can be used damaged (pinched) area of the cable, etc. to find the distance to a fault in a cable IN/OUT VERT/SINAD DIST/DVM...
Page 93 1. With the cursor located within the Display 3. With the cursor located within the RF Control zone, press the softkey, then Control zone, set the range, output level and more press the softkey. center frequency for the best display of the CABLE FAULT standing wave pattern.
Page 94 5. With the cursor located within the Display tuning knob to center an adjacent null to the Control zone (Cen Freq:), use the tuning same location on the sweep generator scope. knob to center any null on the sweep 8. Press the softkey.
Page 95: Tone Remote Testing
the base station or repeater as a console or desk TONE REMOTE TESTING remote. The tone remote function allows the analyzer to The most common use for the tone remote feature generate the required function tones and timing is commanding tone remote bases in order to for tone controlled equipment.
Page 96: 4-4.1 Tone Remote Testing Setup
4-4.1 Tone Remote Testing Setup 2. Tone Remote frequencies are programmed Refer to figure 4-4. Connect the analyzer RF I/O via the Tone A and Tone B memory. Set up port to the radio antenna connector. Connect the the Audio Control zone, as follows: phone lines, using a RTL-1003A matching transformer, to the analyzer's MOD OUT connector.
Page 97: Analyzer Setup For Printing
3. Set the "Format Sel:" to . The 4. With the cursor located within the Display TONE RMT base transmitter is activated when the zone ("Meter:" field), press the RF DISPLAY SYNTH is turned on by pressing the softkey. Monitor the base frequency, power BURST key.
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Page 99: List Of Abbreviations
Appendix A LIST OF ABBREVIATIONS Ampere Electronic Engineering Association Alternating Current Electronics Industry Association Amplitude Modulation Ext’l External ATTEN Attenuation Frequency Modulation AUTO Automatic FREQ Frequency BATT Battery Generate Coaxial RF Connector Gigahertz Bandwidth Horiz Horizontal Celsius High Pass Filter Calibrate Hertz CCIR...
Page 100 LIST OF ABBREVIATIONS-CONTINUED MSEC Millisecond Single Sideband Metering Standard Mobile Telephone System Switch Millivolts Sweep Microvolts Synth Synthesizer Milliwatt Tone Number Trig Trigger Not Applicable Transmitter Narrow Bandwidth Ultra High Frequency Non-volatile memory Volts ORIG Originated Volts Alternating Percent Current Private Line, a Motorola Volts Direct Current registered trademark...
Page 101: Tone And Code Specifications
Appendix B TONE AND CODE SPECIFICATIONS Table B-1. Standard DTMF Tones Tone Group Standard Dtmf (Hz) HIGH 1209 HIGH 1336 HIGH 1477 HIGH 1633 Table B-2. DTMF Frequency Coding* Low Group Tone High Group Tone (Hz) (Hz) 1209 1336 1447 1633...
Page 102: Table B-3. Private-Line (Pl) Codes
*The analyzer has provisions for encoding and decoding 16 different keys. Each key is assigned two frequencies: one from a low-tone group and one from a high-tone group. Four tones are available from each group, with 16 different combinations of low and high group tones. This table shows the tone assignments of each key. Table B-3.
Page 103 Table B-3. Private-Line (PL) Codes (cont) Frequency Code (Hz) 206.5 210.7 218.1 225.7 229.1 233.6 241.8 250.3...
Page 104: Table B-4. 5/6 Tone Paging Tones
Table B-4. 5/6 Tone Paging Tones Digit Frequency 1023 1164 1305 1446 1587 1728 1869 2010 Table B-5. DPL Standard Codes...
Page 105: Table B-6. Select V Frequencies
Table B-6. Select V Frequencies ZVEI ZVEI ZVEI CCIR CCIR EEAA Character French 70ms (Hz) (Hz) (Hz) (Hz) (Hz) (Hz) 2400 2200 2400 1981 1981 1981 1060 1060 1124 1124 1124 1160 1060 1160 1197 1197 1197 1270 1160 1270 1275 1275 1275...
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Page 107: Safe Handling Of Cmos Integrated Circuit Devices
Appendix C SAFE HANDLING OF CMOS INTEGRATED CIRCUIT DEVICES Many of the integrated circuit devices used in WARNING communications equipment are of the CMOS When wearing Conductive Wrist Strap, be (Complementary Metal Oxide careful near sources of high voltage. The Semiconductor) type.
Page 108 WARNING pins (if this becomes necessary in the replacement of an integrated circuit If the aluminum foil is connected directly device), be sure to discharge any static to ground, be cautious of possible electri- buildup as described in procedure 1. cal shock from contacting the foil at the Since voltage differences can exist same time as other electrical circuits.
Page 109: External Port Pin Assignments
Appendix D EXTERNAL PORT PIN ASSIGNMENTS RS-232 PORT This is a full bidirectional RS-232 port with the capability to respond to a serial input. The port serves a dual purpose in that if an RS-232 is not desired, the port can be used as a printer output. Software determines if the port functions as an RS-232 bidirectional port or as an output-only printer port.
Page 110: Figure D-1. Rear Panel Dc Input Port
REAR PANEL DC INPUT PORT Drawing shows pins as seen from a rear view of the Analyzer. Positive DC voltage must be between +11 and +18VDC. Either "+" pin may be used for the positive DC voltage since these two pins are tied together internally.

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