1. Manuals
  2. Brands
  3. KWS Electronic Manuals
  4. Measuring Instruments
  5. Varos 107
  6. Manual

KWS Electronic Varos 107 Manual

Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
Contents
Notes on Safety, Usage, Maintenance and Service ....................................................... 7
1.1
Safety notes ......................................................................................................................................... 7
1.2
Usage notes ......................................................................................................................................... 8
1.3
Maintenance ......................................................................................................................................... 8
1.4
Cleaning ............................................................................................................................................... 8
1.5
Calibration ............................................................................................................................................ 8
1.6
Service ................................................................................................................................................. 8
Technical Data ............................................................................................................... 9
Control and connection elements, pin configurations ................................................... 20
3.1
Front panel ......................................................................................................................................... 20
3.2
Rear panel .......................................................................................................................................... 21
3.3
Top section of instrument ................................................................................................................... 22
3.3.1
USB-A socket ..................................................................................................................................... 22
3.3.2
DVI output .......................................................................................................................................... 22
3.4
Bottom section of instrument .............................................................................................................. 23
3.4.1
12V power supply ............................................................................................................................... 23
Startup .......................................................................................................................... 24
4.1
Mains operation .................................................................................................................................. 24
4.2
Battery operation ................................................................................................................................ 24
4.2.1
Replacing the Li-Ion battery ............................................................................................................... 24
4.2.2
Battery management .......................................................................................................................... 25
4.3
Operation using an external power supply ......................................................................................... 25
4.4
Ventilation control ............................................................................................................................... 25
4.5
Switching on ....................................................................................................................................... 25
4.6
Setting volume, brightness, contrast and color saturation ................................................................. 25
Menu structure ............................................................................................................. 26
5.1
Menu bar ............................................................................................................................................ 26
5.2
Drop-down menu ................................................................................................................................ 27
TV Measuring Range ................................................................................................... 28
6.1
Switching between frequency and channel input ............................................................................... 28
6.1.1
Channel input ..................................................................................................................................... 28
6.1.2
Frequency input .................................................................................................................................. 28
6.2
Selecting of the operating mode......................................................................................................... 29
6.2.1
Analog (ATV) operating mode ............................................................................................................ 29
6.2.1.1
Selecting the TV standard .................................................................................................................. 29
6.2.1.2
Sound carrier ...................................................................................................................................... 29
6.2.1.3
Scan ................................................................................................................................................... 30
6.2.1.4
Picture and sound check .................................................................................................................... 30
6.2.1.5
S/N measurement (Option) ................................................................................................................ 30
6.2.1.6
Noise Margin (NM) ............................................................................................................................. 31
6.2.2
DIGITAL (DVB-C, DOCSIS) operating mode ..................................................................................... 31
6.2.2.1
DVB-C ................................................................................................................................................ 31
6.2.2.1.1
Symbol rate input ............................................................................................................................... 32
6.2.2.1.2
Scan ................................................................................................................................................... 33
6.2.2.1.3
DVB-C parameters ............................................................................................................................. 33
6.2.2.1.4
BER measurement (Bit Error Rate) .................................................................................................... 34
6.2.2.1.5
MER measurement (Modulation Error Rate) ...................................................................................... 34
6.2.2.1.6
Noise Margin (NM) ............................................................................................................................. 34
6.2.2.1.7
PE measurement (Packet Error) ........................................................................................................ 34
6.2.2.1.8
Picture and sound check .................................................................................................................... 34
6.2.2.1.9
Constellation diagram ......................................................................................................................... 34
6.2.2.2
DOCSIS (downstream) ....................................................................................................................... 35
Contents
1
10713 Vxx.11

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the Varos 107 and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for KWS Electronic Varos 107

Summary of Contents for KWS Electronic Varos 107

  • Page 1: Table Of Contents

    Contents Contents Chapter 1 Notes on Safety, Usage, Maintenance and Service ............7 Safety notes ............................7 Usage notes ............................8 Maintenance ............................8 Cleaning ............................... 8 Calibration ............................8 Service ..............................8 Chapter 2 Technical Data ....................... 9 Chapter 3 Control and connection elements, pin configurations ...........
  • Page 2 Contents 6.2.2.2.1 DOCSIS parameters .......................... 36 6.2.2.2.2 Scan ..............................37 6.2.2.2.3 BER measurement (Bit Error Rate) ....................37 6.2.2.2.4 MER measurement (Modulation Error Rate) ..................38 6.2.2.2.5 Noise Margin (NM) ..........................38 6.2.2.2.6 PE measurement (Packet Error) ......................38 6.2.2.2.7 Constellation diagram .........................
  • Page 3 Contents Stereo indicator ..........................60 RDS (Radio Data System) ......................... 60 Scan ..............................60 Level measurement ..........................61 7.6.1 Acoustic level trend ..........................61 Chapter 8 RC (Return Channel) Measuring Range ..............62 Frequency input ..........................62 Level measurement ..........................62 8.2.1 Max hold function ..........................
  • Page 4 Contents 11.2 Connection of the measuring receiver to the multimedia socket ............79 11.3 Measurement of the DOCSIS downstream ..................79 11.4 DOCSIS analysis and measurement of the DOCSIS upstream ............79 11.4.1 DOCSIS DS parameters ........................80 11.4.2 DOCSIS US parameters ........................80 11.4.3 Downstream and upstream analysis using DOCSIS-3.0 analyzer .............
  • Page 5 Contents 15.10 TILT measurement in the TV range ....................110 15.10.1 Digital level reduction ........................112 15.10.2 Selecting a profile ..........................112 15.10.3 Creating or changing a profile ......................113 15.10.4 Application ............................114 15.11 Switching to measuring receiver mode .................... 114 15.12 Max-Hold-Function ...........................
  • Page 6 Contents 20.4.3 MER/BER measurements, constellation diagram ................141 20.4.4 TILT measurement / Line-up ......................141 20.4.5 Waterfall chart of the real-time spectrum ..................142 20.4.6 Report ............................... 142 20.4.7 Display headend settings ......................... 143 20.4.8 Quick Check ............................. 143 20.4.9 Headend: Lock handheld device ..................... 143 Chapter 21 DVI Output .........................

  • Page 7: Chapter 1 Notes On Safety, Usage, Maintenance And Service

    Chapter 1 - Notes on Safety, Usage, Maintenance and Service Chapter 1 Notes on Safety, Usage, Maintenance and Service Safety notes Please note the instructions and warnings contained in these operating instructions. This instrument is built and tested according to EN61010-1 (protective measures for electronic measuring instruments) .

  • Page 8: Usage Notes

    Chapter 1 - Notes on Safety, Usage, Maintenance and Service Usage notes The guarantee for a new instrument ends 24 months after delivery. The guarantee is invalidated if the instrument is opened! Sharp tools (such as screwdrivers) can damage the plastic pane in front of the TFT display and thus ruin the TFT.

  • Page 9: Chapter 2 Technical Data

    Chapter 2 - Technical Data Chapter 2 Technical Data FREQUENCY RANGE 45 – 868 MHz 868 – 1,050 MHz (Option) 868 - 1,214 MHz (Option) Resolution 50 kHz Frequency input / Channel input FM (VHF) 87.4 – 108.2 MHz Resolution 50 kHz RC (Return channel) 5 –...
  • Page 10 Chapter 2 - Technical Data LEVEL RANGE Measuring bandwidth TV analog Video carrier 200 kHz Sound carrier 200 kHz DVB-C 4 MHz, 1 MHz or 200 kHz depending on symbol rate 200 kHz 1 MHz, 200 kHz or 90 kHz depending on bandwidth symbol rate setting 200 kHz Acoustic level trend indicator...
  • Page 11 Chapter 2 - Technical Data DVB-C AND EURO-DOCSIS QAM demodulator (Per ETS 300163) Symbol rates 1.0 – 7.2 MSym/s Modulation scheme 16, 32, 64,128 und 256 QAM Measuring parameters (Per ETR 290) 1.00•10 up to 40 dB Noise Margin (NM) up to 10 dB Resolution 0.1 dB...
  • Page 12 Chapter 2 - Technical Data DOCSIS 3.0-ANALYZER Downstream demodulator USDOCSIS See J83B EURODOCSIS See DVB-C Frequency 111 MHz – 868 MHz 111 MHz - 1002 MHz ( Option 1.0GHz or 1.2GHz) Upstream modulator Modulation scheme QPSK, 8QAM, 16QAM, 32QAM, 64QAM, 128QAM (only S-CDMA) Symbol rates 160, 320, 640, 1,280, 2,560, 5,120 kSym/s...
  • Page 13 Chapter 2 - Technical Data DOCSIS 3.1-ANALYZER Downstream demodulator USDOCSIS See J83B (only Docsis3.0 and greater) EURODOCSIS See DVB-C (only Docsis3.0 and greater) OFDM 4k or 8k FFT, Bandwidth up to 192MHz Frequency 111 MHz / 258MHz - 1218MHz Upstream modulator Modulation scheme QPSK, 8QAM, 16QAM, 32QAM, 64QAM, 128QAM, 256QAM (only S-CDMA, OFDM (2k and 4k up to...
  • Page 14 Chapter 2 - Technical Data DVB-T COFDM demodulator (Per ETS 300744) Bandwidth 6, 7, 8 MHz 2k, 8k Modulation scheme QPSK, 16QAM, 64QAM Guard intervals 1/4, 1/8, 1/16, 1/32 Measuring parameters (Per ETR 290) CBER (before Viterbi) 1.00•10 VBER (after Viterbi) 1.00•10 up to 35 dB Noise Margin (NM)
  • Page 15 Chapter 2 - Technical Data DTMB Demodulator (Per GB20600-2006) Bandwidth 8MHz Carrier mode Single carrier modulation (C1) Multiple carrier modulation OFDM (C3780) Modulation scheme 4QAM, 4QAM_NR, 16QAM, 32QAM, 64QAM Guard intervals PN420v, PN595c, PN945v, PN420c, PN945c 0,4, 0,6, 0,8 Time interleave M_240, M_720 Measuring parameters (Per ETR 290)
  • Page 16 Chapter 2 - Technical Data NIT evaluation MPEG2, MPEG4 DECODER Display of MPEG video parameters Video bit rate measurement in Mbit/s Video decoding MPEG-2 MP@HL ISO/IEC 13818-2 MPEG-4 AVC ISO/IEC 14496-10 ITU-T H.264 Option MPEG-H L5.1 ISO/IEC 23008-2 ITU-T H.265 Option AVS/AVS+ AVS1-P2 (Jizhun)
  • Page 17 Chapter 2 - Technical Data OPTICAL RECEIVER Connector SC/APC (with protective cap) Wavelength (Lambda) 1,260 – 1,620 nm (no optical filter) Max. optical input power +8 dBm (continuous power) Return loss > 40 dB Equivalent input noise (ON) < 8 pA/√Hz RF frequency range 5 –...
  • Page 18 Chapter 2 - Technical Data UPSTREAM SIGNAL GENERATOR (DOCSIS 3.0 ANALYZER) Generating test signals feed in the return path to assess the quality of the return channel performance Number of carriers 1 or 4 (all CW or all modulated) Upstream modulator Modulation scheme OFF (CW), QPSK, 16QAM, 64QAM, 256QAM Symbol rates...
  • Page 19 Chapter 1 - Per RF input REMOTE SUPPLY Voltage Power up to 100 mA (short circuit-proof) Short circuit message Automatic switch-off POWER SUPPLY External 12V 11 – 15 V DC max. 3.0A or external primary power supply 12 V / 3 A (included in delivery) via extra-low voltage jack according to DIN 45323 Power consumption max.

  • Page 20: Chapter 3 Control And Connection Elements, Pin Configurations

    Chapter 3 - Control and connection elements, pin configurations Chapter 3 Control and connection elements, pin configurations Front panel Figure 3-1 Front panel 10713 Vxx.11...

  • Page 21: Rear Panel

    Chapter 3 - Control and connection elements, pin configurations Rear panel Figure 3-2 Rear panel 10713 Vxx.11...

  • Page 22: Top Section Of Instrument

    Chapter 3 - Control and connection elements, pin configurations Top section of instrument Figure 3-3 Top section of instrument 3.3.1 USB-A socket Pin 1 = V (+5V) Pin 2 = Data D - Pin 3 = Data D + Pin 4 = GND Figure 3-4 USB-A socket 3.3.2 DVI output...

  • Page 23: Bottom Section Of Instrument

    Chapter 3 - Control and connection elements, pin configurations Bottom section of instrument Figure 3-6 Bottom section of instrument 3.4.1 12V power supply Extra-low voltage jack according to DIN 45 323 Figure 3-7 Extra-low voltage jack 10713 Vxx.11...

  • Page 24: Chapter 4 Startup

    Chapter 4 - Startup Chapter 4 Startup Mains operation Only power the instrument from the mains using an external mains adapter connected to the 12 V extra-low voltage jack. A suitable adapter with connecting cable is included in delivery (see chapter 4.3 - Operation using an external power supply).

  • Page 25: Battery Management

    Chapter 4 - Startup 4.2.2 Battery management The instrument has internal battery management, which optimizes the charging and discharging of the battery. The battery begins to charge as soon as the instrument is connected to the mains or an external voltage supply. The instrument starts in charging mode if it is not being used; during this time only the OSD window on the top left is shown with the text “Charging BATT”...

  • Page 26: Chapter 5 Menu Structure

    Chapter 5 - Menu structure Chapter 5 Menu structure The device functions can be controlled via the menu bar associated with the function keys F1 – F5. The menu bar is permanently displayed in most operating modes. It disappears after a few moments in analyzer and play mode and can be called up again by pressing one of the five function keys.

  • Page 27: Drop-Down Menu

    Chapter 5 - Menu structure Drop-down menu This user interface is used for general settings when in default status and for lists. Selecting main menu Press MODE key Leaving the menu Press MODE or HOME key Selecting a menu point Select the desired menu item using the arrow keys (↑or ↓) and press ENTER Back to previous menu level...

  • Page 28: Chapter 6 Tv Measuring Range

    Chapter 6 - TV Measuring Range Chapter 6 TV Measuring Range You access the TV range via RANGE -> TV. Figure 6-1 TV measuring range Switching between frequency and channel input The instrument can be tuned by entering the channel center frequency (DVB-C und DOCSIS), the video carrier frequency (ATV) or by entering the channel.

  • Page 29: Selecting Of The Operating Mode

    Chapter 6 - TV Measuring Range Use the HOME, Arrow or the Number keys to end the measurement procedure. A new frequency can be set as described above. Selecting of the operating mode Using the ANA/DIG menu item you can select the operating mode of the measuring instrument in the TV range.

  • Page 30: Scan

    Chapter 6 - TV Measuring Range 6.2.1.3 Scan You can use this function to scan the entire TV range for analog TV signals. For this, the instrument must operate in channel input mode. In this operating mode, the arrow keys have a dual function. After entry of a new channel, the menu item 2.FUNCTION is inverted.

  • Page 31: Noise Margin (Nm)

    Chapter 6 - TV Measuring Range 6.2.1.6 Noise Margin (NM) In contrast to digital signals there is no fixed point here at which the image display is disturbed, but a continuous deterioration of the image. Therefore here the value S/N = 45 dB for the minimum quality at the BK socket according to EN500083-7 is taken as reference value.

  • Page 32: Symbol Rate Input

    Chapter 6 - TV Measuring Range 6.2.2.1.1 Symbol rate input You must set the corresponding symbol rate before a DVB-C (QAM) signal can be received. Figure 6-5 Symbol rate setting First select menu item SYMBOLRATE. A drop-down menu with three symbol rates then appears. Select the desired symbol rate using the ↑/↓arrow keys.

  • Page 33: Scan

    Chapter 6 - TV Measuring Range 6.2.2.1.2 Scan You can use this function to scan the entire TV range for DVB-C signals. For this, you must switch the instrument to channel input mode. The scan function includes automatic detection of modulation schemes and symbol rates. That means that the instrument scans every channel with 64QAM, 128QAM and 256QAM and the symbol rates 6,111 kBd, 6,875 kBd and 6,900 kBd.

  • Page 34: Ber Measurement (Bit Error Rate)

    Chapter 6 - TV Measuring Range 6.2.2.1.4 BER measurement (Bit Error Rate) The measurement of the bit error rate aids in the determination of the quality of a DVB signal. To determine the bit error rate, the error correction mechanisms in the digital receiver are used. The data stream is compared before and after correction and the number of corrected bits is determined from that.

  • Page 35: Docsis (Downstream)

    Chapter 6 - TV Measuring Range 6.2.2.2 DOCSIS (downstream) DOCSIS (Data over Cable Service Interface Specification) is the standard for the transmission of data in interactive cable networks. DOCSIS includes a downstream and an upstream. DOCSIS differentiates between US-DOCSIS (transmission in 6 MHz channels) and Euro-DOCSIS (transmission in 8 MHz channels).

  • Page 36: Docsis Parameters

    Chapter 6 - TV Measuring Range You can select the modulation scheme for the DOCSIS variant in another menu. Figure 6-8 DOCSIS modulation type The associated symbol rate is automatically set. Automatic scan with DOCSIS: If you enter a new channel, the receiver attempts to synchronize with the current settings (DOCSIS variants, modulation schemes).

  • Page 37: Scan

    Chapter 6 - TV Measuring Range In the case of a US-DOCSIS signal, the automatically detected de-interleaver depths are also shown in the display. The variable de-interleaver is part of the J83B specification (in the case of DVB-C and EURO-DOCSIS, the de-interleaver is fixed with I = 12 / J = 17). Figure 6-9 DOCSIS ranging display 6.2.2.2.2 Scan...

  • Page 38: Mer Measurement (Modulation Error Rate)

    Chapter 6 - TV Measuring Range The BER is shown on the display in exponential form. The measuring depth can be shifted between 1•10 and 1•10 bits. For changing the measuring depth at first the key HOME has to be pressed. Then the depth of the bit error rate measurement can be set to 1•10 (1 billion) bits via the menu item BER ->...

  • Page 39: Dvb-T

    Chapter 6 - TV Measuring Range 6.2.2.3 DVB-T The DVB-T receiver of the measuring instrument is activated via the menu item MODULATION -> DVB-T. Figure 6-10 DVB-T modulation The modulation method with DVB-T is COFDM (Coded Orthogonal Frequency Division Multiplex). It involves a very robust digital transmission method that is optimized in particular for transmission channels with multipath reception.

  • Page 40: Scan

    Chapter 6 - TV Measuring Range 6.2.2.3.2 Scan You can use this function to scan the entire TV range for DVB-T signals. You must switch the instrument to channel input mode to use the scan function. In the digital operating mode, the arrow keys have a dual function. After entry of a new channel, the menu item 2.FUNCTION is inverted.

  • Page 41: Further Dvb-T Parameters

    Chapter 6 - TV Measuring Range The DVB-T standard is suitable for transmission in single frequency networks (SFN). In a single frequency network, the involved stations operate synchronously on the same frequency. In order to take into account differing transit times with simultaneous effect on the receiving location, the DVB-T signal contains a so-called “guard interval”.

  • Page 42: Mer Measurement (Modulation Error Rate)

    Chapter 6 - TV Measuring Range 6.2.2.3.6 MER measurement (Modulation Error Rate) In addition to measurement of the bit error rate, it is established practice with digital transmission to also measure MER. It is defined in ETR290. MER is calculated from the constellation points. It is the counterpart to S/N measurement with analogue transmission methods.
  • Page 43 Chapter 6 - TV Measuring Range To show the impulse response on the TFT of the measuring instrument, select the menu item IMPULSERES. A menu for additional settings will then appear. Figure 6-14 DVB-T Impulse response menu options You can “freeze” the picture using FREEZE. You can expand the impulse response in the horizontal direction using ZOOM.

  • Page 44: Pe Measurement (Packet Error)

    Chapter 6 - TV Measuring Range Peak-Search Function While the impulse response is built up, the instrument determines the four highest secondary impulses apart from the main impulse. If there are echoes, the cursor moves to the highest secondary impulse after the second cycle. By pressing the keys ↑ and ↓ the cursor may be moved to further echoes cyclically one after the other.

  • Page 45: Dvb-T2

    Chapter 6 - TV Measuring Range 6.2.2.4 DVB-T2 The DVB-T2 receiver of the measuring instrument is activated via the menu item MODULATION -> DVB-T2. Figure 6-17 Modulation mode DVB-T2 The modulation method for DVB-T2 is COFDM (Coded Orthogonal Frequency Division Multiplex). It involves a very robust digital transmission method that is optimized in particular for transmission channels with multipath reception.

  • Page 46: Scan

    Chapter 6 - TV Measuring Range 6.2.2.4.2 Scan You can use this function to scan the entire TV range for DVB-T2 signals. To do this, you must switch the instrument to channel input mode. In the digital operating mode, the arrow keys have a dual function. After entry of a new channel, the menu item 2.FUNCTION is inverted.

  • Page 47: Further Dvb-T2 Parameters

    Chapter 6 - TV Measuring Range In Figure 6-18 DVB-T2 parameters the equipment receives a DVB-T2-signal with following parameters: • 32kFFTe: 32k FFT, the e means “Extended Carrier Mode”, i.e. bandwidth utilization is higher in this mode as additional OFDM single carriers are used. •...

  • Page 48: Ber Measurement (Bit Error Rate)

    Chapter 6 - TV Measuring Range 6.2.2.4.6 BER measurement (Bit Error Rate) The measurement of the bit error rate aids in the determination of the quality of a DVB-T2 signal. To determine the bit error rate, the error correction mechanisms in the digital receiver are used. The data stream is compared before and after correction and the number of corrected bits is determined from that.

  • Page 49: Impulse Response

    Chapter 6 - TV Measuring Range 6.2.2.4.9 Impulse response As with DVB-T, DVB-T2 is intended for operation in a single frequency network. This means several transmitters transmit on the same frequency. The transmitters involved must operate synchronously on the same frequency. The maximum transmitter distance depends on the Guard Interval used.

  • Page 50: Pe Measurement (Packet Error)

    Chapter 6 - TV Measuring Range 6.2.2.4.10 PE measurement (Packet Error) Short interruptions in the DVB-T2 signal usually cannot be detected using MER and BER measurement. They can make entire packets in the transport stream unusable for the MPEG decoder, however. This can cause the picture to freeze temporarily or the sound to crackle. The measuring receiver has a function with which corrupt transport stream packets are summed from the point in time of entry of a new channel.

  • Page 51: Scan

    Chapter 6 - TV Measuring Range The DTMB receiver is activated via the menu items MODULATION -> DTMB. Figure 6-21 Modulation selection DTMB After activating a new menu will appear where the DTMB mode can be adjusted. Figure 6-22 DTMB selecting carrier mode The single carrier mode (C1) is activated with SINGLECAR whereas the receiver is set to multi carrier mode (C3780) with MULTICAR.

  • Page 52: Dtmb Parameters

    Chapter 6 - TV Measuring Range The scan is then started by first tuning the measuring receiver to a channel at which the scan should begin. Press the ↑ key to start the scan in the positive direction. Press the ↓ key to do the same in the negative direction.

  • Page 53: Ber Measurement (Bit Error Rate)

    Chapter 6 - TV Measuring Range 6.2.2.5.3 BER measurement (Bit Error Rate) The measurement of the bit error rate aids in the determination of the quality of a DTMB signal. To determine the bit error rate, the error correction mechanisms in the digital receiver are used. The data stream is compared before and after correction and the number of corrected bits is determined from that.

  • Page 54: Pe Measurement (Packet Error)

    Chapter 6 - TV Measuring Range Figure 6-24 DTMB Impulse response The example above shows an impulse response with a primary impulse (left picture edge) and several secondary impulses. The dotted line represents the guard interval. Echoes with high levels behind the guard interval cause loss of signal quality.

  • Page 55: Remote Supply

    Chapter 6 - TV Measuring Range 6.2.2.5.10 Remote supply The measuring receiver can provide a remote power supply via the RF input socket for an active receiving antenna (see also chapter 9.9 - Remote supply). Level measurement After the measuring receiver is tuned, the automatic attenuation control and level measurement starts.

  • Page 56: Diagrams

    Chapter 6 - TV Measuring Range Diagrams For a clearer presentation of the measured values, they may also be displayed as bar diagrams. 6.4.1 Operation As soon as the instrument is adjusted, it is possible to change to the diagram display by selecting the menu item DIAGRAM .

  • Page 57: Blind Scan

    Chapter 6 - TV Measuring Range Blind Scan This function can be used to determine the channel configuration in an unknown cable network. The measuring receiver scans the specified frequency range for ATV, DVB-C and DOCSIS signals. The instrument creates a channel list, which is displayed on the TFT during the scan. Once the function is complete, the list can be transferred in the tuning memory, saved as a XML file or exported as a CHA file.

  • Page 58: Exporting The Channel List

    Chapter 6 - TV Measuring Range Figure 6-27 BlindScan Channeltable The scan can be aborted at any time using the F5 key. After a manual abort, the channel list determined up to that point remains available for further processing. The following figure shows a list as it is displayed on the TFT of the instrument. 6.5.3 Exporting the channel list Once the function is ended (either regularly or manually), the list determined by the instrument is...

  • Page 59: Chapter 7 Fm (Vhf) Measuring Range

    Chapter 7 - FM (VHF) Measuring Range Chapter 7 FM (VHF) Measuring Range You activate the FM (VHF) range via RANGE -> FM. Figure 7-1 VHF measuring range Frequency input You can enter a frequency between 87.40 and 108.20 MHz using the numeric keypad or the arrow keys.

  • Page 60: Stereo Indicator

    Chapter 7 - FM (VHF) Measuring Range Stereo indicator The stereo decoder of the VHF receiver evaluates the 19 kHz pilot signal. If a pilot is present, STEREO appears in the top line; MONO is otherwise displayed. Figure 7-2 VHF stereo indicator display RDS (Radio Data System) RDS is the counterpart to videotext for TV.

  • Page 61: Level Measurement

    Chapter 7 - FM (VHF) Measuring Range Level measurement As soon as the instrument is tuned to a frequency, it begins to measure the level and displays the measured value in dBµV. The measuring range is from 25 to 110 dBµV with a resolution of 0.1 dB. The measuring rate for the numerical level value is approx.

  • Page 62: Chapter 8 Rc (Return Channel) Measuring Range

    Chapter 8 - RC (Return Channel) Measuring Range Chapter 8 RC (Return Channel) Measuring Range You access the RC range via RANGE -> RC. Figure 8-1 RC measuring range Frequency input You can enter a frequency between 5.0 MHz and 65.0 MHz using the numeric keypad or the arrow keys.

  • Page 63: Max Hold Function

    Chapter 8 - RC (Return Channel) Measuring Range 8.2.1 Max hold function The usable signal on the return path of a cable system is generated by the active (online) cable modem. According to the cluster size of a network, the cable modem can transmit more or fewer frequencies.

  • Page 64: Setting The Channel Bandwidth

    Chapter 8 - RC (Return Channel) Measuring Range 8.2.2 Setting the channel bandwidth Cable modems transmit in bursts with the modulation types QPSK or QAM. Because every active cable modem is assigned to only certain time slots, it can only transmit briefly. This means that a short burst is generated in QPSK or QAM.

  • Page 65: Chapter 9 Electromagnetic Interference Measurement

    Chapter 9 - Electromagnetic Interference Measurement Chapter 9 Electromagnetic Interference Measurement The German regulation on the protection of public telecommunication networks and transmission and receiving radio plants that are operated in the defined frequency ranges for security purposes (SchuTSEV) [“Verordnung zum Schutz von oeffentlichen Telekommunikationsnetzen und Sende- und Emfpangsfunkanlagen, die in definierten Frequenzbereichen zu Sicherheitszwecken betrieben werden”] has been in effect since May 2009.

  • Page 66: Antenna Selection

    Chapter 9 - Electromagnetic Interference Measurement Antenna selection The field strength that is displayed is acquired by measuring the antenna voltage and converting it, taking into consideration the physical properties of the antenna used. The antenna being used can be set under ANTENNA. Types EMI 240 and EMI 241 are currently supported. A pre-amplifier is already integrated in the EMI 241 antenna.

  • Page 67: Entering The Limit

    Chapter 9 - Electromagnetic Interference Measurement Entering the limit There are official regulations for observing the interference radiation of cable systems. They set limits for the emission field strength at a distance of 3 m. The maximum field strength can be entered into the instrument.

  • Page 68: Setting The Identifier

    Chapter 9 - Electromagnetic Interference Measurement Setting the identifier The measuring instrument has a help setting for setting the identifier of the frequency identification generator. Application note “AN002 – Measuring electromagnetic interference” contains information on how to set and change the identifier for KFG 242. If a character received from the identifier is marked showing that this character is one that can be changed with two buttons on KFG 242, this character will be displayed inverted on the display.

  • Page 69: Chapter 10 Upstream Generator

    Chapter 10 - Upstream Generator Chapter 10 Upstream Generator The Upstream Generator can be used during analysis of the return channel range (5 MHz to 65 MHz). One or four carriers can be transmitted in that range. The Upstream Generator usually acts as modem, the transmitted signals could be analyzed by the head end equipment (e.g.

  • Page 70: Configuration

    Chapter 10 - Upstream Generator 10.1.2 Configuration Use the CONFIG. menu item to access the setting options. Figure 10-2 Upstream Generator overview 10.1.2.1 Setting the modulation Modulation is activated or deactivated by opening the SINUS/QAM menu item. “On (PRBS)” or “Off (Sinus)”...

  • Page 71: Setting The Number Of Upstream Carriers

    Chapter 10 - Upstream Generator 10.1.2.2 Setting the number of upstream carriers Specify the number of carriers under the UPSTREAMS menu item. You can select between one and four carriers. Figure 10-4 Upstream Generator carrier selection 10.1.2.3 Entering the frequency After selecting the FREQUENCY menu item, use the numeric keypad or the arrow keys to set a frequency between 5 MHz and 65 MHz.

  • Page 72: Common Transmission Level

    Chapter 10 - Upstream Generator 10.1.2.5 Common transmission level The level difference between two carriers is limited to 16dB. So to change the transmission level of 4 carriers in one step there is the item "1-4". As soon as this item is active all levels show the same value.

  • Page 73: Setting The Symbol Rate

    Chapter 10 - Upstream Generator 10.1.2.7 Setting the symbol rate The bandwidths 400 kHz, 800 kHz, 1.6 MHz, 3.2 MHz and 6.4 MHz are defined in DOCSIS Standard. These correspond to the symbol rates 320 kBd, 640 kBd, 1,280 kBd, 2,560 kBd and 5,120 kBd.

  • Page 74: Upstream-Generator Version Docsis3.1

    Chapter 10 - Upstream Generator 10.2 Upstream-Generator Version DOCSIS3.1 10.2.1 Starting and Profile Support Like in DOCSIS Version 3.0 the Upstream-Generator can be started with RANGE -> UPSTR.GEN. -> Profile 1/2 (see Chapter 10.1.1 - Starting and Profile Support). Two different Profiles are supported.

  • Page 75: Setting The Number Of Upstreams

    Chapter 10 - Upstream Generator 10.2.2.2 Setting the number of upstreams The amount of carrier can vary between one to eight. All not with an * marked carriers are active and can be transmitted. With the F-Key ACTIVATE can the selected upstream activated or disabled (with * marked) for the transmission.

  • Page 76: Setting The Symbol Rate

    Chapter 10 - Upstream Generator 10.2.2.7 Setting the symbol rate For DOCSIS single QAM carriers following bandwidths are defined: 400 kHz, 800 kHz, 1.6 MHz, 3.2 MHz and 6.4 MHz. These correspond to the symbol rates 320 kBd, 640 kBd, 1,280 kBd, 2,560 kBd and 5,120 kBd.

  • Page 77: Accessing The Telemetry Channel

    Chapter 10 - Upstream Generator Figure 10-11 Telemetry channel saving 10.3.2 Accessing the telemetry channel First, the device must be active in upstream generator mode, i.e. already booted up. The OSD/VID button opens the stored telemetry channel and the video display is shown as a superimposed image in addition to the interface of the upstream generator.

  • Page 78: Chapter 11 Docsis Analyzer

    Chapter 11 - DOCSIS Analyzer Chapter 11 DOCSIS Analyzer 11.1 Introduction The analyzer of the measuring receiver operates in accordance with specification DOCSIS 3.0 or DOCSIS 3.1. DOCSIS stands for “Data-Over-Cable Service Interface Specification”. The standard sets the rules for fast, bi directional communication and IP data exchange between the headend and the user either via a pure coaxial network or an HFC network (Hybrid Fiber/Coaxial).

  • Page 79: Connection Of The Measuring Receiver To The Multimedia Socket

    Chapter 11 - DOCSIS Analyzer 11.2 Connection of the measuring receiver to the multimedia socket For measurement with the DOCSIS analyzer, you must connect the instrument via an F-plug to IEC-plug adapter with the F-connection of a multimedia socket on which a DOCSIS signal is present.

  • Page 80: Docsis Ds Parameters

    Chapter 11 - DOCSIS Analyzer Figure 11-4 DOCSIS selection of modulation scheme The associated symbol rate is automatically set. Automatic scan of the DOCSIS variant: If you enter a new channel, the receiver attempts to synchronize with the current settings (DOCSIS variants, modulation schemes).

  • Page 81: Downstream And Upstream Analysis Using Docsis-3.0 Analyzer

    Chapter 11 - DOCSIS Analyzer 11.4.3 Downstream and upstream analysis using DOCSIS-3.0 analyzer The DOCSIS 3.0 analyzer can be used to draw a conclusion about whether the communication between a modem and the CMTS at the site of the measurement works in principle. Furthermore, the analyzer can be used as an instrument for levelling return path amplifiers.

  • Page 82: Downstream Analysis

    Chapter 11 - DOCSIS Analyzer The primary channels in the downstream contain SYNC and UCD messages; the secondary channels do not. Primary channels can be used to create a connection between a modem and CMTS; secondary channels are used only for data rate multiplication. The primary downstream channel is shown in green in the graphic.

  • Page 83: Upstream Analysis

    Chapter 11 - DOCSIS Analyzer Each DS channel in the system has a unique identification (ID) that is displayed after the corresponding frequency. The DS duty factor provides information on how many MPEG packets of the DS data stream, the DOCSIS PID (pack identification) 0x1FFE carries in relation to all the incoming packets.

  • Page 84: More Advanced Upstream Time Slice Analysis

    Chapter 11 - DOCSIS Analyzer The offset is note qual to zero, if, for instance, you set a return channel amplifier and adjust the amplification during measurement. The modem adjusts its transmission power so that the offset is equal to zero again the next time ranging messages are exchanged. If the level offset is constantly not equal to zero then there is an error in the return channel path (example: the modem is already transmitting at 114 dBμV and the level offset is +9 dB.

  • Page 85: Speed Test With The Docsis Analyzer

    Chapter 11 - DOCSIS Analyzer The following figure shows the DOCSIS-3.0 analyzer. Figure 11-9 DOCSIS Frequency analysis You can use the ←/→ keys to select the relevant upstream channel in the graphic. The frequency response is always shown for the upstream channel marked in red. Press MODE and ENTER to leave the FRQRESP menu.
  • Page 86 Chapter 11 - DOCSIS Analyzer Figure 11-10 DOCSIS selection menu Several parameters in the measuring instrument are necessary for performing the speed test. These are: • IP address of the FTP server • username and password of the FTP server •...

  • Page 87: Ping Test With The Docsis 3.0 Analyzer

    Chapter 11 - DOCSIS Analyzer Figure 11-11 DOCSIS speed test results For uplink tests, the display is the same except of minor difference that the line for the file name remains empty because random data is sent from the measuring receiver to the FTP server in this case.

  • Page 88: Docsis3.1-Analyzer

    Chapter 11 - DOCSIS Analyzer Below this row, the assigned device and gateway IP-address from the DHCP server are displayed. If the ping status switches to “finished”, the results are summarized below in statistical form (packets sent; packets received; packets lost, calculated from packets sent and received; and the minimum, maximum and average time to receive a response from the individual PINGs).

  • Page 89: Tuning To An Ofdm-Downstream

    Chapter 11 - DOCSIS Analyzer 11.5.1 Tuning to an OFDM-downstream With the Menupart MODULATION -> DOCSIS in the TV-Range (6.2.2 - DIGITAL (DVB-C, DOCSIS) operating mode) you can activate the downstream receiver of the measurement device. Additional the modulation scheme of the DOCSIS-standard can be choosed. Here you will be find also the OFDM variant to the EURO- and US-DOCSIS variants.
  • Page 90 Chapter 11 - DOCSIS Analyzer Figure 11-14 DOCSIS-3.1-Analyzer Mainscreen Following measurement variables are available after successful connection with CMTS: • DOCSIS-standard (DOCSIS 3.0 or DOCSIS 3.1) • display of the used security system (e.g. BPI+) • amount of bonded downstream channels •...

  • Page 91: Docsis 3.1 Downstream Analyze

    Chapter 11 - DOCSIS Analyzer 11.5.3 Docsis 3.1 downstream analyze The Downstream-Analyze window will be called with the function key DOWNSTREAM. Figure 11-15 Downstream Analyze Windows with OFDM infos Each bar indicates one downstream channel. With the arrow keys ←/→ you can choose the desired channel.

  • Page 92: Ofdm Level Diagram

    Chapter 11 - DOCSIS Analyzer Figure 11-16 List of PLC parameters 11.5.3.2 OFDM level diagram With the level diagram function you can show the level trend inside the selected OFDM channel. That diagram can be reached with the F-Key PEG(f). Figure 11-17 OFDM level diagram 11.5.3.3 OFDM MER diagram...

  • Page 93: Ofdm Upstream Analyze

    Chapter 11 - DOCSIS Analyzer Figure 11-18 OFDM MER diagram 11.5.4 OFDM Upstream Analyze From the mainmenu of the DOCSIS-3.1-Analyzer the upstream analyzation can be called with the F-Key UPSTREAM. All relating informations about the upstreams are shown here with its submenus.

  • Page 94: Sequence Of A Measurement

    Chapter 11 - DOCSIS Analyzer 11.6 Sequence of a measurement After the measuring receiver is connected to a multimedia socket (or another point at which the DOCSIS connection can be tested, for example, a return channel amplifier), the measuring receiver should be tuned either by entering the channel of a known DOCSIS DS channel directly or by scanning for a valid DS channel.

  • Page 95: Chapter 12 Mpeg Decoder

    Chapter 12 - MPEG decoder Chapter 12 MPEG decoder The instrument is equipped as standard with a MPEG2/4 decoder. This forms the back-end of a DVB receiver. It analyses the Program Service Information (PSI) and decodes the digital audio and video data.

  • Page 96: Network-Information-Table (Nit)

    Chapter 12 - MPEG decoder 12.2 Network-Information-Table (NIT) The NIT (Network Information Table) is a special table containing information about other transponders/channels within the network (e.g. satellite, cable, DVB-T network). Information from the NIT can be used for navigation purposes (program search). The measuring receiver must first receive a digital channel.

  • Page 97: Logical Channel Numbering (Lcn-List)

    Chapter 12 - MPEG decoder If the NIT includes more than 8 entries, you can use the ←/→ keys to scroll between the individual pages in the list. 12.3 Logical Channel Numbering (LCN-List) For a suitable receiver, the order of the stations can be controlled using the logical channel descriptor (LCD) which is transmitted within the NIT.

  • Page 98: Picture And Sound Check

    Chapter 12 - MPEG decoder 12.4 Picture and sound check As described in the chapter 12.1 - Program Service Information (PSI), several video and audio programs are transmitted in the same multiplex (TS). As soon as the MPEG decoder identifies a TS, it analyses the PSI data and then generates the program lists.

  • Page 99: Display Of Mpeg Video Parameters

    Chapter 12 - MPEG decoder 12.5 Display of MPEG video parameters As soon as a live picture can be seen, the MPEG decoder displays the following parameters in a window at the bottom right of the screen. Profile and level: e.g.

  • Page 100: Chapter 13 Constellation Diagram

    Chapter 13 - Constellation diagram Chapter 13 Constellation diagram 13.1 Introduction The constellation diagram is a graphic representation of the signal states of a digitally modulated signal in a two-dimensional coordinate system. The individual signal states can be viewed as position vectors with the components I (Inphase - horizontal axis) and Q (Quadrature - vertical axis).

  • Page 101: Operation

    Chapter 13 - Constellation diagram 13.2 Operation As has already been mentioned, the constellation diagram can be displayed with all digital standards (DVB-C, DVB-T, DVB-T2, DTMB and DOCSIS). The measuring receiver first has to be tuned in a digital range. Subsequently the constellation diagram can be activated by selecting the menu item CONST.
  • Page 102 Chapter 13 - Constellation diagram Figure 13-3 Constellation diagram with phase jitter Error phase jitter: The carrier is subjected to a low-frequency frequency modulation. Cause: Defect or not correctly adjusted QAM modulator. Figure 13-4 Constellation diagram with noisy signal Error: noisy signal Cause: bad C/N ->...
  • Page 103 Chapter 13 - Constellation diagram Figure 13-5 Real constellation diagram DVB-T2 Figure 13-6 DTMB constellation diagram 10713 Vxx.11...

  • Page 104: Chapter 14 Memory Management

    Chapter 14 - Memory management Chapter 14 Memory management The instrument has a tuning memory with 199 program locations. The memory preview allows the user to gain an overview of the tuning memory without having to access all memory locations or having to make corresponding notes when saving.

  • Page 105: Memory Functions

    Chapter 14 - Memory management 14.3 Memory functions The memory functions can only be controlled when the measuring receiver has not been tuned. 14.3.1 Erasing all memory Press MODE -> Memory -> Erasing all memory to delete the entire tuning memory. A warning is issued beforehand.

  • Page 106: Cancelling Memory Protection

    Chapter 14 - Memory management 14.3.5 Cancelling memory protection This function is used to disable an existing memory protection. This function can be accessed via MODE -> Memory -> Disable memory protection. This is done in the same way as memory protection is activated. The instrument then responds with a corresponding message.

  • Page 107: Chapter 15 Spectrum Analyzer

    Chapter 15 - Spectrum analyzer Chapter 15 Spectrum analyzer You can access the spectrum analyzer in the TV, FM und RC ranges. An example of a broadband cable spectrum is shown below. Figure 15-1 Spectrum analyzer The level-axis has a step width of 10 dB/div. The maximum dynamic range is 40 dB. The blue region at the bottom of the screen contents the center frequency (CF), the resolution band width (RBW) and the frequency segment (span), or in full span mode the start- and stop-frequency.

  • Page 108: Frequency Segment (Span)

    Chapter 15 - Spectrum analyzer 15.2 Frequency segment (SPAN) In all measuring ranges, you can change the frequency segment displayed. You can do this via the menu items SPAN -> FULLSPAN , FULL EXT or xxMHz , or the Up/Down keys.

  • Page 109: Input Of The Center Frequency

    Chapter 15 - Spectrum analyzer 15.5 Input of the center frequency You can enter and activate a new center frequency at any time using the numeric keypad and by pressing ENTER. The cursor is then moved to the new position or, if the distance to the cut-off frequencies permits, the frequency segment is shifted such that the cursor is in the center.

  • Page 110: Level Diagram In The Broadband Cable Range

    Chapter 15 - Spectrum analyzer 15.9 Level diagram in the broadband cable range Assuming the measuring receiver is operating in the TV range, the mode is set to channel input and the frequency segment is FULLSPAN respectively FULL EXT, the instrument provides a very useful feature.
  • Page 111 Chapter 15 - Spectrum analyzer This allows you to quickly identify which DVB-C channels have 256 QAM and which have 64 QAM, for example. Figure 15-4 TILT measurement For every cursor position, the upper blue display area shows the channel, the level measured during the last search, the channel type (analog/digital) and, for digital channels, the modulation.

  • Page 112: Digital Level Reduction

    Chapter 15 - Spectrum analyzer 15.10.1 Digital level reduction Using the menu item LEVEL RED., the level reduction for digital channels can be set depending on the modulation scheme. Figure 15-5 TILT measurement - digital level reduction You can use the ↑/↓ keys to select the desired entry field and open the input mask by pressing ENTER.

  • Page 113: Creating Or Changing A Profile

    Chapter 15 - Spectrum analyzer 15.10.3 Creating or changing a profile The currently active profile can be adjusted using the menu item SETTINGS. After the menu item was selected, the diagram is frozen and the 2 cursor appears. Figure 15-6 TILT measurement - Selecting a profile You can use the ←/→...

  • Page 114: Application

    Chapter 15 - Spectrum analyzer 15.10.4 Application There are two basic applications. „Line up“ a system: A profile is created with the channels that are occupied in the system. Move the 1 cursor onto the lowermost channel and the 2 cursor onto the uppermost channel.

  • Page 115: Max-Hold-Function

    Chapter 15 - Spectrum analyzer 15.12 Max-Hold-Function This function can be switched on and off via the menu item MAX HOLD. The menu item is then displayed inverted. The spectrum is only updated when the level increases. Since with an active return path, the spectrum changes depending on the activity of the connected cable modem a reasonable representation of the spectrum is only possible with this function.

  • Page 116: Ingress Measurement In The Return Path

    Chapter 15 - Spectrum analyzer 15.13 Ingress measurement in the return path This function is activated via the menu item INGRESS. Ingress refers to all interference spectra those mix with the signal in the return path. Those can be strong short wave stations, CB radio, baby monitors or interference emissions from electrical machines.

  • Page 117: Chapter 16 Optical Receiver

    Chapter 16 - Optical Receiver Chapter 16 Optical Receiver 16.1 Introduction RF signals are increasingly being transmitted via fiber optic cables. Optical transmission in broadband networks is gaining importance. While optical transmission in most existing networks still occurs exclusively at network level 2, the trend is moving towards fiber optic distribution up to the subscriber terminals.

  • Page 118: Activating The Optical Input

    Chapter 16 - Optical Receiver Optical input power The measuring instrument does not have an integrated adjustable optical attenuator element. As a result, the measuring instrument’s optical receiver can be operated with up to 8 dBm of continuous power. However, the optimal range for the receiver is from -7 dBm to +3 dBm. At lower power levels, the reception quality is reduced because of the receiver noise.

  • Page 119: Measuring The Optical Power

    Chapter 16 - Optical Receiver 16.4 Measuring the optical power Figure 16-2 Optical power measurement Optical transmission involves modulation of the intensity of the light power. The measuring instrument measures the average optical power in dBm. This power is also measured when the light is supplied from an unmodulated laser source.

  • Page 120: Cleaning The Fiber Optic Plug Connection

    Chapter 16 - Optical Receiver Figure 16-3 Spectrum analyzer in optical mode Note! The level specified after the OMI value corresponds to the internal RF level after the optical/electrical converter. This information is only relative. This specification is primarily used to determine the relationships between the levels of the individual channels.

  • Page 121: Usb Microscope

    Chapter 16 - Optical Receiver 16.7 USB Microscope A USB microscope can be connected to the device for plug connector inspection. The device supports DI-1000 type USB microscopes from Lightel Technologies. Contamination in optical plug connections can impair the signal quality. Typical types of contamination include dust particles, hand lotion, skin and alcohol residues.
  • Page 122 Chapter 16 - Optical Receiver Figure 16-5 Poor physical contact because of dust particles The microscope image in the measuring receiver shows a large magnification of the optical fiber (Figure 16-6). That figure is taken with Lightel DI-1000 USB microscope with an optical magnification of 200.

  • Page 123: Operation

    Chapter 16 - Optical Receiver The shows the schematic structure of a typical single-mode fiber with a 9µm core. Figure 16-7 Schematic structure of a typical single-mode fiber 16.7.1 Operation The microscope range is called up by pressing the RANGE -> Microscope key. The following image settings can be made with the F buttons: Brightness BRIGHT +...

  • Page 124: Logging

    Chapter 16 - Optical Receiver 16.7.2 Logging For documentation purposes, it is possible to make a screenshot of the current microscope image. As the measuring instrument is only equipped with a single USB interface, 4 images can be saved in the internal buffer of the measuring instrument. Once all 4 storage locations are occupied, you will have to save these images on a USB stick to free up these locations up again.

  • Page 125: Chapter 17 Management Of The Instrument

    Chapter 17 - Management of the instrument Chapter 17 Management of the instrument These functions can only be accessed when the instrument is not tuned. 17.1 Keypad The key tone and the key illumination can be switched on and off via the MODE -> Settings -> Keypad menu.

  • Page 126: Serial Number

    Chapter 17 - Management of the instrument Figure 17-1 Clock adjustment Another way to set the clock is to use the DVB time. The measuring receiver must first receive a digital channel. Press MODE and if there were time information received, the item Setup clock to DVB time is available.

  • Page 127: User-Defined Tv Channel Table

    Chapter 17 - Management of the instrument 17.8 User-defined TV channel table In addition to the preset channel tables that the instrument uses in combination with the used TV- standard, a user-defined channel table can be loaded onto the instrument. Users can use the AMA.remote PC software to create their own tables and export them as files.

  • Page 128: Hardcopy

    Chapter 17 - Management of the instrument 17.10 Hardcopy For documentation purposes, the screen contents can be saved on a USB stick or on one of two internal memory locations. Videos and drop-down menus for settings, etc. cannot be copied. By selecting PRINT, you can access a menu where you can choose between “Screenshot ->...

  • Page 129: Configuration Of Ping Test In The Docsis Analyzer

    Chapter 17 - Management of the instrument 17.11 Configuration of PING test in the DOCSIS analyzer You can configure a Ping test by selecting MODE -> Settings -> DOCSIS analyzer -> Ping Test. 64 byte long PING packets are sent as standard during the test. The number of packets to be sent and the time interval between two PINGS can be configured in this submenu.

  • Page 130: Configuration Of Speed Test In The Docsis Analyzer

    Chapter 17 - Management of the instrument 17.13 Configuration of speed test in the DOCSIS analyzer The speed test (data throughput measurement) works in uplink and downlink directions. The test is based on transmission of data from or to an FTP server that is connected to the head end. Several parameters must be stored in the measuring instrument for this test.

  • Page 131: Docsis3.1 Setup The Maximum Upstreamfrequency

    Chapter 17 - Management of the instrument 17.14 DOCSIS3.1 Setup the maximum Upstreamfrequency The measurement receiver can use two different frequency ranges for DOCSIS3.1 mode. The first one is 5 to 85 MHz for upstream and 111 to 1218 MHz for downstream. The seconde one is 5 to 204 MHz for upstream and 258 to 1218 MHz for downstream.
  • Page 132 Chapter 17 - Management of the instrument Figure 17-6 Activating software options If the code is entered correctly, the following message appears: Option activated! Now the corresponding option is enabled for use. 10713 Vxx.11...

  • Page 133: Chapter 18 Measurement Data Memory (Datalogger)

    Chapter 18 - Measurement Data Memory (DataLogger) Chapter 18 Measurement Data Memory (DataLogger) The instrument is equipped with a measurement data memory (DataLogger). This allows you to save measured values automatically on a USB stick as an XML file. The data can then be read and processed using a spreadsheet program such as MSExcel™...

  • Page 134: Transferring And Evaluating A Series Of Measurements On The Pc

    Chapter 18 - Measurement Data Memory (DataLogger) 18.2 Transferring and evaluating a series of measurements on the PC To evaluate, document or process the measurements, the data must first be transferred to a PC or laptop using a USB stick. As already mentioned, the measurement data saved in an XML file on the USB stick, which can be readed and processed using MSExcel™...

  • Page 135: Chapter 19 Measurement Data Recording (Datagrabber)

    Chapter 19 - Measurement Data Recording (DataGrabber) Chapter 19 Measurement Data Recording (DataGrabber) The DataGrabber allows the measuring receiver to record measurement data over a specified period of time and display the results graphically. The shortest period of time that you can enter is one minute.

  • Page 136: Starting The Recording

    Chapter 19 - Measurement Data Recording (DataGrabber) If no measured values are available for particular measurement parameters at the time of sampling, a vertical red bar appears in the respective diagram. This can happen if the receiver goes to “unlocked”, for example. If the status of the receiver subsequently changes back to “locked”, the measurement parameters are recorded again and the packet error counter is set to zero.
  • Page 137 Chapter 19 - Measurement Data Recording (DataGrabber) Figure 19-2 DataGrabber recording The absolute number of packet errors is also displayed in this operating mode. You can use the ABORT menu item to stop the recording before the specified time period has elapsed.

  • Page 138: Evaluating Of The Recording

    Chapter 19 - Measurement Data Recording (DataGrabber) 19.2 Evaluating of the recording Once the DataGrabber has finished (automatically or stopped manually), you can use the cursor function to determine the time at which a possible error occurred in the system. To do this, you use the ←/→...

  • Page 139: Chapter 20 Upstream Monitoring System Ums

    Chapter 20 - Upstream monitoring system UMS Chapter 20 Upstream monitoring system UMS 20.1 Introduction The Upstream Monitoring System (UMS) is a measuring system consisting of a device in the headend and one or several handheld devices (also called field devices). The UMS permits to measure the return path in a DOCSIS network.

  • Page 140: Service Id

    Chapter 20 - Upstream monitoring system UMS Alternatively: MODE -> Channel number: change to the relevant position with the arrow keys ←/→ and ↑/↓ or enter the desired channel number directly. The channel type can be chosen between C and S with the arrow keys ↑/↓. Confirm by pressing ENTER. The mode menu can be left by pressing the MODE key again.

  • Page 141: Wobbling (Frequency Response Measurement)

    Chapter 20 - Upstream monitoring system UMS 20.4.2 Wobbling (Frequency Response Measurement) This measurement determines the frequency response in the return channel range. The handheld transmits a constant level over the total frequency range, the frequency response received at the headend is shown in graphic form in the display.

  • Page 142: Waterfall Chart Of The Real-Time Spectrum

    Chapter 20 - Upstream monitoring system UMS Depending on the measurement location the TILT measurement can be done at the OUTLET an at the house-amplifier HOUSE or at the Line-amplifier LINE . More details are given in the Application-Note "AN006 - Upstream-Monitoring-System UMS". Appropriate measurement parameters such as the maximum transmission level of the modem or an amplifier testpoint attenuation can be made via MODE ->...

  • Page 143: Display Headend Settings

    Chapter 20 - Upstream monitoring system UMS The data name is adopted by pressing ENTER and the measurement starts. If the file name already exists, a warning is given in which the overwriting can be confirmed (with ENTER) or you can return again to the file name input by pressing the HOME key.

  • Page 144: Chapter 21 Dvi Output

    Chapter 21 - DVI Output Chapter 21 DVI Output The measuring instrument is equipped with a DVI/HDMI interface for connecting a Full HD TV set. This allows you to check the functionality of the DVD/HDMI interface on an external LCD screen, for example.
  • Page 145 Chapter 21 - DVI Output Adjusting the picture of HEVC and AVS+ programs to the display of the instrument is done by downscaling first. For the output via DVI/HDMI upscaling is done to the default resolution 1920x1080i again. This results in loss of picture quality in the output signal. While running HEVC and AVS+ programs the DVI/HDMI output can be directly fed by the decoder with full resolution in the formats 1280x720p50Hz, 1920x1080p50Hz, 3840x2160p25Hz and 3840x2160p30Hz via MODE->...

  • Page 146: Chapter 22 Usb-A Interface

    Chapter 22 - USB-A Interface Chapter 22 USB-A Interface The measurement receiver has a USB-A interface. The corresponding port is at the top section of instrument (see chapter 3.3 - Top section of instrument ). The interface is compatible with USB 2.0 specification in high speed mode.

  • Page 147: Chapter 23 Common Interface

    Chapter 23 - Common Interface Chapter 23 Common Interface The instrument is equipped with a CI interface. This consists of a PCMCIA slot (see chapter 3.3 - Top section of instrument). The PCMCIA slot is compatible with all common conditional access modules (CAM).

  • Page 148: Card Menu

    Chapter 23 - Common Interface 23.3 Card menu This option allows you to access the module-specific menu. Various details and services can be called up for each module. For example, smartcard information, software version, software update, PIN code entry for youth protection, and so on. The menu is laid out just like the other menus on the instrument.

  • Page 149: Chapter 24 Figure Index

    Chapter 24 - Figure index Chapter 24 Figure index Figure 3-1 Front panel ..........................20 Figure 3-2 Rear panel ..........................21 Figure 3-3 Top section of instrument ....................... 22 Figure 3-4 USB-A socket ......................... 22 Figure 3-5 DVI socket ..........................22 Figure 3-6 Bottom section of instrument ....................
  • Page 150 Chapter 24 - Figure index Figure 10-9 Upstream Generator configuration selection ................ 74 Figure 10-10 Upstream Generator change common transmission level ..........75 Figure 10-11 Telemetry channel saving ....................77 Figure 10-12 Upstream Generator with overlayed telemetry video stream ..........77 Figure 11-1 Communication network .......................
  • Page 151 Chapter 24 - Figure index Figure 19-4 DataGrabber recording packed errors ................. 138 Figure 20-1 UMS real-time spectrum ...................... 140 Figure 20-2 UMS frequency response measurement ................141 Figure 20-3 UMS waterfall chart ......................142 Figure 21-1 DVI output, selection menu ....................144 Figure 21-2 Video resolution at HDTV via DVI menu ................

Table of Contents