Kathrein MSK 125 User manual

Operating Manual
Antenna Measuring System
MSK 125
For software version V1.2

2
FOREWORD/IMPORTANT INSTRUCTIONS
Dear customer,
thank you for choosing the Kathrein MSK 125 measuring instrument. Please read the
following instructions carefully, so as to familiarise yourself with all the new functions before
starting to use your instrument.
Please comply with all the instructions in this operating manual. KATHREIN-Werke KG has
done all it can to ensure that the data and descriptions in this operating manual are correct
and complete.
We reserve the right to make changes without notice. In particular, this applies to changes
made due to technical advancements.
We would be pleased to receive any suggestions for improvements.
All product names and brands used in this operating manual are the property of their
respective owners.
This operating manual is applicable to the MSK 125 measuring instrument, article no.:
21710022 and MSK 125/M4, article no.: 21710023. The following instructions are important
for operating the MSK 125 and should be complied with under all circumstances.
The MSK 125 has been developed and manufactured in compliance with all relevant
harmonised directives, standards and other technical specifications. The product is state-
of-the-art and offers a high level of safety. This degree of safety can however be achieved in
operation only if the user complies with all necessary safety regulations.
Electronic equipment is not household waste - in accordance with directive 2002/96/EC OF
THE EUROPEAN PARLIAMENT AND THE COUNCIL dated 27th January 2003 on used
electrical and electronic equipment, it must be disposed of properly.
At the end of its service life, take this unit for disposal at a designated public collection point.
Spent batteries are special waste!
Do not throw spent batteries into your domestic waste; take them to a collection point for old
batteries!
VALIDITY OF THIS OPERATING MANUAL
GENERAL SAFETY INSTRUCTIONS

3
CONTENTS
FOREWORD/IMPORTANT INSTRUCTIONS ................................................................................ 2
VALIDITY OF THIS OPERATING MANUAL ................................................................................... 2
GENERAL SAFETY INSTRUCTIONS .......................................................................................... 2
CONTENTS............................................................................................................................... 3
SAFETY INSTRUCTIONS........................................................................................................... 7
MEANING OF SYMBOLS ......................................................................................................... 7
SAFETY INSTRUCTIONS......................................................................................................... 7
PRODUCT PACKAGE .............................................................................................................. 7
FUNCTIONALITY ...................................................................................................................... 8
OPERATING AND DISPLAY ELEMENTS................................................................................... 10
LCD DISPLAY........................................................................................................................ 10
TFT COLOUR DISPLAY.......................................................................................................... 10
LED DISPLAY........................................................................................................................ 10
OVERVIEW OF KEYPAD COMMANDS.................................................................................... 12
CONNECTIONS....................................................................................................................... 14
FRONT VIEW ........................................................................................................................ 14
SIDE VIEW............................................................................................................................ 14
EXTERNAL DC SUPPLY ........................................................................................................ 14
RF INPUT.............................................................................................................................. 15
USB PORT ............................................................................................................................ 15
SD CARD .............................................................................................................................. 15
HDMI OUTPUT ...................................................................................................................... 15
SCART SOCKET ................................................................................................................... 15
COMMON INTERFACE .......................................................................................................... 15
PHONES SOCKET................................................................................................................. 15
RS 232 INTERFACE............................................................................................................... 15
GETTING STARTED ................................................................................................................ 16
POWER UP........................................................................................................................... 16
POWER DOWN ..................................................................................................................... 16
SETUP MENU ....................................................................................................................... 16
SETUP MENU SETTINGS ...................................................................................................... 16
DEFAULT SETUP SETTINGS AT TIME OF SHIPMENT .................................................................. 17
MAINS AND BATTERY OPERATION ....................................................................................... 17
MAINS OPERATION.............................................................................................................. 17
BATTERY OPERATION .......................................................................................................... 18
SAT ........................................................................................................................................ 19
ANALOGUE SATELLITE RECEPTION ..................................................................................... 19
SAT ANALOGUE/DVB-S(2) SELECTION .................................................................................... 19
FREQUENCY DISPLAY AND ENTRY ........................................................................................ 19
COMMAND OVERVIEW OF SAT FREQUENCY INPUT.................................................................. 19
SAT TRANSPONDER FREQUENCY INPUT ................................................................................ 20
LNB VOLTAGE AND 22 KHZ SELECTION................................................................................ 21
“SAT ANALOGUE” LEVEL MEASUREMENT................................................................................ 23
SOUND CARRIER FREQUENCY SETTING ............................................................................. 23

4
CONTENTS
DIGITAL SAT RECEPTION...................................................................................................... 25
FREQUENCY DISPLAY AND ENTRY ........................................................................................ 25
COMMAND OVERVIEW OF SAT FREQUENCY INPUT.................................................................. 25
LNB VOLTAGE AND 22 KHZ SELECTION................................................................................ 26
“SAT DVB-S(2)” LEVEL MEASUREMENT ................................................................................... 28
SETTING DVB-S(2) DEMODULATION PARAMETERS................................................................... 28
DISEQCTM (DIGITAL SATELLITE EQUIPMENT CONTROL) ....................................................... 28
COMMAND OVERVIEW FOR DISEQCTM .................................................................................... 29
COMMAND OVERVIEW FOR “FRAMING BYTE”.......................................................................... 31
COMMAND OVERVIEW FOR “ADDRESS BYTE” ......................................................................... 31
COMMAND OVERVIEW FOR “COMMAND BYTE”........................................................................ 32
COMMAND OVERVIEW FOR “DATA BYTE” ................................................................................ 33
SCIF – SINGLE CABLE INTERFACE (SAT SINGLE CABLE SYSTEM DISEQC CONTROL) ......... 34
SIMPLE DISEQCTM, TONE BURST .......................................................................................... 38
COMMAND OVERVIEW FOR “SIMPLE DISEQCTM”....................................................................... 38
DVB-S(2) MER, BER AND OFFSET MEASUREMENT............................................................... 38
MPEG IMAGE REPRESENTATION IN DVB-S(2)....................................................................... 39
NIT NETWORK INFORMATION TABLE WITH DVB-S (S2)......................................................... 39
LOCATING SATELLITES ........................................................................................................ 40
FINDING INDIVIDUAL RECEPTION FREQUENCIES ................................................................ 41
TV MEASUREMENT................................................................................................................ 42
ANALOGUE CABLE TV RECEPTION ...................................................................................... 42
ANALOGUE CABLE/DVB-C SELECTION ................................................................................... 42
HF STANDARD SELECTION - ANALOGUE CABLE (DEMOD MENU)................................................ 42
CHANNEL DISPLAY AND ENTRY ........................................................................................... 43
COMMAND OVERVIEW FOR “TV CHANNEL ENTRY”................................................................... 43
FREQUENCY DISPLAY AND ENTRY....................................................................................... 43
COMMAND OVERVIEW FOR TV “FREQUENCY ENTRY” .............................................................. 44
“CABLE ANALOGUE” LEVEL MEASUREMENT ........................................................................ 44
LEVEL OVERFLOW AND UNDERFLOW .................................................................................... 45
AUDIO CARRIER SPACING AND LEVEL ................................................................................. 45
COMMAND OVERVIEW FOR “MEASURE TV AUDIO CARRIER FREQUENCY” .................................. 45
DIGITAL CABLE TV RECEPTION ............................................................................................ 47
ANALOGUE CABLE/DVB-C SELECTION ................................................................................... 47
HF STANDARD SELECTION - ANALOGUE CABLE (DEMOD MENU)................................................ 47
CHANNEL DISPLAY AND ENTRY ........................................................................................... 48
COMMAND OVERVIEW FOR “TV CHANNEL ENTRY”................................................................... 48
FREQUENCY DISPLAY AND ENTRY....................................................................................... 48
COMMAND OVERVIEW FOR “TV FREQUENCY ENTRY” .............................................................. 49
SETTING DVB-C DEMODULATION PARAMETERS ...................................................................... 49
LEVEL MEASUREMENT OF “DVB-C” SIGNALS ....................................................................... 50
ANALOGUE CABLE/DVB-C SELECTION ................................................................................... 50
DVB-C MER, BER AND OFFSET MEASUREMENT................................................................... 50
MPEG IMAGE REPRESENTATION IN DVB-C .......................................................................... 51
NIT NETWORK INFORMATION TABLE FOR DVB-C ................................................................. 51
ANALOGUE TERRESTRIAL TV RECEPTION........................................................................... 52
ANALOGUE TERRESTRIAL / DVB T/H SELECTION ..................................................................... 52
HF STANDARD SELECTION – TERRESTRIAL ............................................................................ 52

5
SET CHANNEL BANDWIDTH .................................................................................................. 52
HF STANDARD SELECTION ................................................................................................... 52
CHANNEL DISPLAY AND ENTRY ........................................................................................... 53
COMMAND OVERVIEW FOR “TV CHANNEL ENTRY”................................................................... 53
FREQUENCY DISPLAY AND ENTRY....................................................................................... 53
COMMAND OVERVIEW FOR “TV FREQUENCY ENTRY” .............................................................. 54
DIGITAL TERRESTRIAL TV RECEPTION ................................................................................ 55
ANALOGUE TERRESTRIAL / DVB T/H SELECTION ..................................................................... 55
HF STANDARD SELECTION – TERRESTRIAL ............................................................................ 55
SETTING DVB-T/H DEMODULATION PARAMETERS ................................................................... 55
HF STANDARD SELECTION DVB-T.......................................................................................... 55
CHANNEL DISPLAY AND ENTRY ........................................................................................... 56
COMMAND OVERVIEW FOR “TV CHANNEL ENTRY”................................................................... 56
FREQUENCY DISPLAY AND ENTRY....................................................................................... 56
COMMAND OVERVIEW FOR “TV FREQUENCY ENTRY” .............................................................. 57
DVB-T-/H MER, BER AND OFFSET MEASUREMENT............................................................... 58
MPEG IMAGE REPRESENTATION IN DVB-T........................................................................... 58
NIT NETWORK INFORMATION TABLE FOR DVB-T ................................................................. 59
FINDING INDIVIDUAL RECEPTION FREQUENCIES ................................................................ 60
NICAM AUDIO BIT ERROR RATE MEASUREMENT ................................................................. 61
TV RETURN PATH MEASUREMENT....................................................................................... 61
FM MEASUREMENT................................................................................................................ 62
FM SELECTION..................................................................................................................... 62
FREQUENCY DISPLAY AND ENTRY....................................................................................... 62
COMMAND OVERVIEW FREQUENCY ENTRY FM................................................................... 62
LEVEL MEASUREMENT ........................................................................................................ 62
LEVEL OVERFLOW AND UNDERFLOW .................................................................................... 63
FINDING INDIVIDUAL RECEPTION FREQUENCIES ................................................................ 63
COMMAND OVERVIEW FOR “FIND”......................................................................................... 63
SPECTRUM MEASUREMENT.................................................................................................. 64
SAT SPECTRUM ................................................................................................................... 64
TV SPECTRUM ..................................................................................................................... 65
RETURN PATH SPECTRUM ................................................................................................... 67
FM SPECTRUM..................................................................................................................... 67
STORING DEVICE SETTINGS.................................................................................................. 68
STORING DEVICE SETTINGS................................................................................................ 68
RESTORING DEVICE SETTINGS ........................................................................................... 68
DELETING DEVICE SETTINGS .............................................................................................. 68
STORING MEASUREMENT RESULTS...................................................................................... 69
STORING MEASUREMENT RESULTS IN THE DEVICE MEMORY ............................................ 69
RESTORING MEASUREMENT RESULTS FROM THE DEVICE MEMORY.................................. 69
DELETING MEASUREMENT RESULTS FROM THE DEVICE MEMORY..................................... 70
STORING MEASUREMENT RESULTS ON THE SD CARD........................................................ 70
CONTENTS

6
DATA LOGGER ....................................................................................................................... 72
ENTERING THE START AND STOP LINE FOR AUTOMATIC MEASURING ................................ 72
ENTERING THE START LINE FOR AUTOMATIC MEASURING ....................................................... 72
ENTERING THE STOP LINE FOR AUTOMATIC MEASURING......................................................... 73
STARTING AND INTERRUPTING AUTOMATIC MEASURING.................................................... 73
RESTORING MEASUREMENT RESULTS FROM THE DEVICE MEMORY.................................. 73
STORING THE DATA LOGGER MEASUREMENT RESULTS ON THE SD CARD......................... 74
MAINTENANCE....................................................................................................................... 75
DEVICE CALIBRATION .......................................................................................................... 75
OUTSIDE CLEANING............................................................................................................. 75
INTERIOR CLEANING............................................................................................................ 75
FUNCTION TEST................................................................................................................... 75
REQUIRED MEASURING EQUIPMENT................................................................................... 75
CHANGING THE BATTERY .................................................................................................... 75
STORAGE............................................................................................................................. 75
CUSTOMER SERVICE............................................................................................................. 76
TECHNICAL CUSTOMER SUPPORT ...................................................................................... 76
FEATURES ............................................................................................................................. 77
TECHNICAL DATA .................................................................................................................. 78
TECHNICAL APPENDIX........................................................................................................... 80
SIGNAL-TO-NOISE RATIO ..................................................................................................... 80
DISEQCTM COMMANDS FOR KATHREIN MATRICES ............................................................... 81
COMMAND SET FOR KATHREIN MATRICES ............................................................................. 81
COMMAND SET FOR KATHREIN MATRIX EXR 20....................................................................... 81
COMMAND SET FOR KATHREIN MATRIX EXR 22....................................................................... 81
LIST OF SINGLE CABLE DISEQCTM COMMANDS........................................................................ 81
CHANNEL TABLES ................................................................................................................ 82
CHANNEL UND FREQUENCY TABLE, “STANDARD B/G” (FREQUENCY IN MHZ)............................... 82
CHANNEL AND FREQUENCY TABLE, “STANDARD L” (FREQUENCY IN MHZ)................................... 83
CHANNEL AND FREQUENCY TABLE, “STANDARD D/K” (FREQUENCY IN MHZ) ............................... 84
CHANNEL AND FREQUENCY TABLE, “STANDARD I” (FREQUENCY IN MHZ) ................................... 85
CALCULATION OF SAT IF FREQUENCY USING THE MSK 125................................................. 86
NOTES ................................................................................................................................... 87

7
SAFETY INSTRUCTIONS
This manual is intended for use by persons with a basic knowledge of electrics. Users who
have already worked with similar measuring devices can refer to a command overview for
the necessary commands for each operating step. Additionally, the following examples are
designed to provide the individual operating steps.
MEANING OF SYMBOLS
Notes with a caution symbol must be adhered to or the MSK 125 could be damaged or
destroyed.
This symbol indicates notes for measuring functions or refers to chapters that contain further
information on a topic.
This symbol is followed by an example of the measurement function being explained.
Provides a command overview with the relevant key combinations for the particular measuring
function.
Device button
SAFETY INSTRUCTIONS
Please follow the enclosed safety instructions.
PRODUCT PACKAGE
1 German/English operating manual
1 AC/DC power unit
1 power cable
1 BNC measuring cable
2 adapters for BNC input - F input (one in the HF input of the MSK 125)
1 adapter for BNC input - F connector
1 adapter for BNC input - IEC input
1 adapter for BNC input - IEC connector
1 USB cable
1 SD card (1 GB memory card)

8
FUNCTIONALITY
The MSK 125 is a mobile multi-purpose measuring device intended for analogue TV and
satellite, FM radio and for DVB-C, DVB-S(2) and DVB-T for battery and mains operation. The
integrated 6.5 Ah lithium-ion battery and a rechargeable 230 V AC power unit are included in
the product package.
A microcontroller provides all control functions, keypad polling and display of frequencies and
levels on the LCD display. The reception frequency is indicated in MHz. The level is measured
with a peak and mean value detector and displayed digitally in dBμV or dBmV. Correction
values are determined during the MSK 125 level calibration and stored in an EEPROM.
This ensures accurate level measurement. Up to 100 measuring device settings can also be
stored.
A second microcontroller allows you to store several thousand measurement results on an
SD card or to read the SD card (up to 1GB) via USB.
The display has a bar graph for transmitter location. Additionally, a level-dependent DF tone
makes it possible to align an antenna without having to observe the display.
The audio unit with integrated speaker can process and render SAT NF signals, the TV NF
signals of B/G, D/K and I, FM sound signals as well as DVB-C, DVB-T and DVB-S(2). NICA
and AM sound rendering (standard L) is also possible.
The remote feed voltage of 5 ... 20 V/max. 600 mA (in 0.1 Volt increments), the superposition
of 22 kHz and the ability to transmit DiSEqCTM commands covers all currently known
requirements. With DVB-T a 5 V antenna feed voltage can be received at the at the RF socket.
The MZV 10 preamplifier or similar preamplifiers can also be fed remotely.
The built-in transflective 5.7" TFT colour display with its resolution of 640 x 480 pixels allows
for picture evaluation of analogue and digital TV and SAT signals in the dark as well as in
sunlight.
A large black and white LCD display shows the measurement results with very high
contrasts.

9
FUNCTIONALITY
Function Operating
mode SAT
analogue
Operating
mode TV
analogue
Operating
mode FM
analogue
Operating
mode
DVB-S/S2
Operating
mode
DVB-C
Operating
mode
DVB-T
Mains and battery operated * * * * * * Level measurement by frequency input * * * * * * Level measurement by channel input * * * Level-dependent signal tone * * * * * * Spectrum display * * * * * * Loudspeaker for audio check * * * * * * Multi-standard reception (B/G, D/K, I, L, Nicam) Nicam audio reception and standard L
* * * QPSK
8PSK
QAM64,
128, 256
COFDM
2k, 8k
Audio carrier setting * * Audio carrier measurement * LNB remote feed voltage supply adjustable LNB remote feed current measurement
** * ***
22 kHz switching * * * * DiSEqC, Simple DiSEqCTM ** * ***
DVB level measurement *** DVB-MER-BER measurement *** DVB image display *** SCART output and input (CVBS, audio) * * * (audio only) * * * Nicam audio, reception and bit error rate measurement * Storing measurement results Storing device settings
** * ***

10
OPERATING AND DISPLAY ELEMENTS
Measured values and settings are shown on the LCD display.
LCD DISPLAY
Depending on the operating mode and function, the LCD display
shows
• the selected channel,
• the selected frequency,
• the called function,
• the operating mode,
• the measured level, and
• the measured values.
TFT COLOUR DISPLAY
Depending on the operating mode, the 5.7" TFT display shows the
following:
• Spectrum analysis
• TV image
• Selection of digital programmes transmitted on the channel or
transponder
• LNB and DiSEqCTM
LED DISPLAY
• Operating voltage (battery operation = red / mains operation =
green)
• LNB supply (voltage = green / short circuit = green blinking)
external voltage = red)

11
OPERATING AND DISPLAY ELEMENTS
TFT Colour Display
TV picture/settings
Source selection
On/off button
Mode indicator
Input pad
Measurements
LCD display
Measurement
results
Settings
LNB display
Cursor pad

12
OVERVIEW OF KEYPAD COMMANDS
Button Brief description of the function
Switching the device on/off
Sources
Selection of SAT operation and switch between analogue and digital SAT
Selection of cable TV operation and switch
between analogue cable TV and digital cable TV
Selection of terrestrial TV operation and switch
between analogue terrestrial TV and digital terrestrial TV
FM radio selection
Selection of video/audio inputs via SCART
Switch between channel and frequency input
Measure-
ments
Switch on level-dependent signal tone with bar graph display
Independent satellite search
Spectrum analysis
DVB measurement; MER, BER, OFFSET, MPEG program selection
LNB power measurement and lithium-ion charging status display
(Subcarrier) sound carrier menu, sound carrier measurement
Input pad
... Alphanumeric input
Decimal point for digit input, DiSEqCTM hexadecimal input
Special channel call
OPERATING AND DISPLAY ELEMENTS

13
OPERATING AND DISPLAY ELEMENTS
Cursor pad
Reduce current values (frequency, channel, etc.)
Increase current values (frequency, channel, etc.)
Selection up
Selection down
Confirm input or selection
Reduce volume
Increase volume
Measurement memory management
Store measurement device settings and measured values
Retrieve measurement device settings and measured values
Settings
Default settings and setting the digital modulation parameters
Device settings
Data logger (automatic measuring)
Launch the DiSEqCTM menu
LNB and remote feed voltage menu

14
CONNECTIONS
FRONT VIEW
RF input USB port SD memory card
Common Interface SCART (audio/video)
SIDE VIEW
Fan Phones RS 232 Speakers Battery fuse DC supply
EXTERNAL DC SUPPLY
The MSK 125 can be operated with a mains supply or its own built-in battery. For mains
operation, use the PSU and charger connected to the DC socket on the left-hand side of the
MSK 125 enclosure.
Use only the power supply unit that is supplied with the MSK 125.
HDMI socket

15
CONNECTIONS
RF INPUT
Here the reception signal is injected from the antenna system or cable network (coaxial
F socket with BNC adapter).
The remote feed voltage can be adjusted from 5 VDC to 20 VDC and can also be switched off.
When the LNB voltage is on, the right-hand LED lights up green. This LED flashes green if
there is a short-circuit or overload. If an external supply is used, the LED is red.
Please note that there is
• no voltage level over 120 dBµV,
• no peak voltage > 100 Volt
at the RF input socket.
Failure to comply with these values can damage the input circuit!
SCART SOCKET
The video and audio signal is available at the SCART socket on the front of the MSK 125
for evaluation on an external monitor. The button also allows you to switch to audio/
video input.
Incorrect connection wiring can damage the device!
PHONES SOCKET
3.5 mm stereo jack socket for connection of stereo ear phones
RS 232 INTERFACE
The RS 232 port allows you to perform software updates.
USB PORT
Measurement results can be read from the inserted SD card at the USB port (USB 1.1).
SD CARD
The supplied SD memory card is used to store the measurement results. SD cards up to
1 GB max. can be used.
COMMON INTERFACE
Slot for a common interface.
HDMI OUTPUT
The digital video and audio signal is available at the HDMI socket on the front of the
MSK 125 for output to an external HDMI monitor. This output is only available with digital
programmes.

16
GETTING STARTED
POWER UP
When setting up the device ensure that adequate ventilation is provided. The openings for the fan
and the ventilation holes must be kept clear at all times to avoid a build up of heat.
• Connect the device with the charger/power unit to the mains
supply.
• Press the button.
• Adjust the desired volume using the or button.
The LCD display shows the current software version and the serial
number of the MSK 125 for approx. 1 second.
Now feed the reception signal from the receiver into the RF input
socket.
LCD display:
• channel (48)
• source (terrestrial)
• level (A = analogue; D = digital level measurement)
Use the , , , and buttons to
select the desired source.
POWER DOWN
Pressing until the “POWER DOWN” message appears will
save the last settings and automatically switch off the device.
Press the button for more than 5 seconds to turn off the device.
The last settings will be lost.
SETUP MENU
Use the “setup menu” to configure your basic settings.
SETUP MENU SETTINGS
1. Setup Menu
To open the Setup menu:
Press the button.
Press the or buttons to switch LNB power supply
on or off. Press the button to keep the desired setting.

17
GETTING STARTED
In the next menu press the or button to define the
measurement unit the level is to be indicated. Press to
keep the current setting.
The next menu prompts you to set the mute function using the
or button. If you select ON, the MSK 125 is
switched to silent as long as the incoming signal on the RF input is
below 30 dBµV. Press the button to keep the desired
setting.
After you have set the low-level mute you automatically exit the
third setup menu.
2. Setup Menu
3. Setup Menu
DEFAULT SETUP SETTINGS AT TIME OF SHIPMENT
Parameter Setting
LNB DC OFF
LEVEL dBµV
LOW LEVEL MUTE ON
MAINS AND BATTERY OPERATION
The MSK 125 can be operated with a mains supply or its own built-in
battery.
MAINS OPERATION
Remove the AC power unit supplied (100 V ... 250 V) from its
packaging and use it to connect the device to the mains supply.
The integrated lithium-ion battery and the green LED next to the
button indicate the external power supply.
For mains operation use only the charger/power unit supplied.
The power unit is connected to the XLR power supply socket on
the left side of the device.
The device should be connected to the mains supply from time to
time if it not used for a while (trickle charge).
Note: A 12 V vehicle supply cable can be obtained through
our customer service (supplier ESC, for address see page 67)
(order no.: 19700841BF).

18
GETTING STARTED
BATTERY OPERATION
Before operating the device for the first time remove the T 8.0 A
fuse from the packaging and place it in the fuse holder.
This fuse prevents the device switching on unintentionally during
transport.
After the fuse has been inserted the charge status display will not
function properly until the battery has been fully discharged once.
Battery operation is only possible if the battery is charged
sufficiently. Otherwise the MSK 125 cannot be switched on.
Note
Once the battery has fully discharged it must be recharged
immediately to avoid damage to the battery.
Charging starts automatically when the device is connected to
the mains. A protection circuit prevents the battery from being
overcharged.
Battery operation is indicated by a red LED next to the
button.
The battery capacity is 6.45 Ah.
Press the button to check the charging status of the
lithium-ion battery.
The LCD display shows the following values:
• LNB or remote feed voltage: 14.0 V
• LNB or remote feed current: 255 mA
• 22 kHz switched on
• Battery charge status: 80 %
• Bar graph (8 x 10 %)
Press the button again to exit this operating mode.

19
SAT
ANALOGUE SATELLITE RECEPTION
In “SAT” mode the MSK 125 can be set to the “Analogue” and “DVB-S(2)” types of reception.
SAT ANALOGUE/DVB-S(2) SELECTION
Press once = SAT analogue
Press again = DVB-S(2)
Press again = SAT analogue again
FREQUENCY DISPLAY AND ENTRY
To measure the level of an reception signal, you must first input the
desired frequency. The LCD display indicates the frequency and the
measured level. The frequency can be entered from 920 MHz to
2150 MHz in 100 kHz increments.
COMMAND OVERVIEW OF SAT FREQUENCY INPUT
Select “satellite reception” (analogue or digital)
... Enter frequency
The frequency can be changed in 100 kHz
increments
Confirm input
LCD display:
• Frequency: 1288.0 MHz
• Operating mode: SAT
• Level: 66.5 dBµV A (A = analogue)
Example To enter the “frequency 1508 MHz”:
Press
LCD display:
• Frequency: 1508.0 MHz
• Operating mode: SAT
• Level: 86.5 dBµV (A = analogue)
A “+” or “-” in the display means that the MSK 125 has not been
tuned accurately to the desired carrier. Use the and
buttons to refine the frequency for optimum reception. A vertical line
on the display indicates optimum frequency adjustment.
Complete your frequency entry by pressing the button. The
most recent frequency setting is retained even after you switch the
MSK 125 off, provided it was entered with digits and confirmed by
pressing .
Note

20
SAT
SAT TRANSPONDER FREQUENCY INPUT
Select “satellite reception” (analogue or digital)
... Enter frequency
The frequency can be changed in 100 kHz
increments
Confirm input
The FRQ/CHAN button can be used to switch
between SAT transponder frequency and SAT IF
frequency display.
To ensure that the SAT IF frequency can be correctly computed
when the SAT transponder frequency is entered, the right LO
frequency must first be selected in the LNB Control menu.
Note
- Press the LNB Control button
- Select: 2 = LO-FREQUENCY
- Select the appropriate LNB local oscillator.
Example The SAT reception frequency range of the measuring device is:
920 MHz ... 2150 MHz
With the LO of 9750 MHz, you can receive transponders within
the range: 10670 MHz ... 11900 MHz.
With the LO of 10600 MHz, you can receive transponders within
the range: 11520 MHz ... 12750 MHz.