many thanks 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.
VALIDITY OF THIS OPERATING MANUAL
This operating manual is applicable to the MSK 125 measuring instrument, order no.:
21710022 and MSK 125/M4, order no.: 21710023. The following instructions are important
for operating the MSK 125 and should be complied with under all circumstances.
GENERAL SAFETY INSTRUCTIONS
The MSK 125 has been developed and manufactured in compliance with all relevant
harmonised directives, standards and other technical specifi cations. 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 must not be disposed of in domestic waste. According to directive
2002/96/EC OF THE EUROPEAN PARLIAMENT AND COUNCIL of 27
waste electrical and electronic equipment, it must be disposed of professionally.
At the end of its service life, take this unit for disposal to an appropriate offi cial 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!
This manual was designed for persons with a basic knowledge of electronics. Users who
have already worked with similar measuring devices can use 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 to avoid damage to the MSK 125.
This symbol indicates notes for measuring functions or refers to chapters that contain more
details on a matter.
This symbol is followed by an example of a measuring function that has been explained.
SAFETY INSTRUCTIONS
Here a command overview is provided for relevant key combinations for a measuring
function.
Device button
SAFETY INSTRUCTIONS
Please follow 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)
6
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 scope of supply.
A micro controller is responsible for the entire controlling, keypad query and display of
frequency and level on the LC display. The receiving 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 precise level measuring. Up to 100 measuring device settings
can be stored as well.
A second micro controller allows you to store several 1000 measuring results on an SC card
or to read the SD card (up to 1GB) via USB.
For transmitter location the display has a bar graph. Additionally, a level-dependent bearing
sound facilitates directing an antenna without having to look at 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.
Remote power feed of 5 ... 20 V/max. 600 mA (in 0.1 Volt increments), the superposition
of 22 kHz and the possibility of sending DiSEqC
known requirements. With DVB-T a 5 V antenna feeding voltage can be received at the
RF connector. Also, the MZV 10 preamplifi er or similar preamplifi ers can be fed remotely.
The integrated, transfl ective 5.7“ TFT colour display with a 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 LC displayshows the measurement results with very high contrasts.
TM
commands covers all currently
7
Operating
mode
DVB-T
Operating
mode
DVB-C
Operating
mode
DVB-S/S2
FUNCTIONALITY
2k, 8k
COFDM
128,256
QAM64,
8PSK
***
Operating
mode
FM analogue
Operating
mode
TV analogue
Operating
mode
SA T analogue
***QPSK
* (audio only)
*
******
******
TM
******
Function
8
Audio carrier setting**
Audio carrier measurement*
LNB remote feed power supply adjustable
LNB remote feed power measurement
22 kHz switch****
Mains and battery operated******
Level measurement by means of frequency input******
Level measurement by means of channel input***
Level-dependent signal sound******
Spectrum analysis******
Speaker for audio check******
Multi-standard reception (B/G, D/K, I, L, Nicam)
Nicam sound reception and L norm
DiSEqC, Simple DiSEqC
DVB level measurement***
DVB-MER-BER measurement***
DVB image display***
SCART output and input (CVBS, Audio)**
Nicam audio, reception and bit error rate measurement
Storing measurement results
Storing device settings
OPERATING AND DISPLAY ELEMENTS
Measured values and settings are shown on the LC display.
LC DISPLAY
Based on operating mode and function the LC display displays
• the set channel,
• the set frequency,
• the called function,
• the operating mode,
• the measured level, and
• the measured values.
TFT COLOUR DISPLAY
Based on the operating mode the 5.7“ TFT-Display displays the
following:
• Spectrum analysis
• TV picture
• Selection of digital programmes transmitted on the channel or
transponder
• LNB and DiSEqC
TM
LED DISPLAY
• Operating voltage (battery operation = red / mains operation =
green)
• LNB supply (voltage = green / short circuit = green blinking)
external voltage = red)
9
TFT colour display
TV picture/settings
Source selection
OPERATING AND DISPLAY ELEMENTS
Measurements
LC display
Measurement results
On/off button
Indication of
operation mode
Input block
Settings
LNB display
Cursor block
10
OPERATING AND DISPLAY ELEMENTS
OVERVIEW OF KEYPAD COMMANDS
ButtonBrief 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
Measurements
Input block
...
Change between channel and frequency input
Switch on level-dependent signal sound 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
Decimal point for digit input, DiSEqCTM hexadecimal input
Special channel call
11
Cursor block
OPERATING AND DISPLAY ELEMENTS
Reduce current values (frequency, channel, etc.)
Increase current values (frequency, channel, etc.)
Selection up
Selection down
Confi rm input or selection
Reduce volume
Increase volume
SD card memory management
Settings
Store measurement device settings and measured values
Recall measurement settings and measured values
Default settings and setting the digital modulation parameters
Device settings
Data logger (automatic measuring)
Launch the DiSEqCTM menu
LNB and remote power feed menu
12
FRONT VIEW
CONNECTIONS
RF inputUSB portSD memory card
SIDE VIEW
Fan
Ear phonesRS 232LoudspeakersBattery fuseDC supply
Common Interface
SCART (audio/video)
13
RF INPUT SOCKET
Here the reception signal is delivered from the antenna system or cable network (coaxial
F socket with BNC adapter).
The remote feeding voltage can be adjusted from 5 VDC to 20 VDC and can also be switched off.
When the LNB voltage is switched on the right control LED illuminates green. If there is a short
circuit of overload, this LED fl ashes green. If there is an external voltage, the LED is red.
Please note that there is
• no voltage level higher than 120 dBµV,
• no peak voltage > 100 Volt
on the right RF input socket.
Failure to comply with these values can damage the input circuit!
USB PORT
Via the USB port (USB 1.1) inserted SD cards can be read.
CONNECTIONS
SD CARD
The supplied SD memory card is used to store the measuring results. You can use SD cards
of up to 1 GB max.
SCART OUTPUT
Via the scart socket on the front side of the MSK 125 the video and audio signals are
available for evaluation on an external monitor. The
audio/video input.
Erroneous connection switching can damage the device!
COMMON INTERFACE
Slot for a common interface.
EAR PHONES SOCKET
Stereo 3.5 mm jack bush for connection of stereo ear phones
button allows you to switch to
RS 232 INTERFACE
The RS 232 port allows you to perform a software update.
EXTERNAL DC POWER SUPPLY
The MSK 125 can be operated on the mains or by means of its integrated battery. The
external voltage supply is provided by the supplied mains and charging unit via the
DC socket on the left casing side of the MSK 125.
Use only the mains unit that came with the device.
14
GETTING STARTED
When you position the device please ensure that there is suffi cient ventilation. To avoid
overheating, the openings for the fan and the ventilation holes must be clear at all times.
SWITCH ON
• Connect the device with the charger/power unit and to the mains.
SWITCHING OFF
• Confi rm the
• Set the desired volume using the
For app. 1 second the LC display indicates the current software
version and serial number of the MSK 125.
Now feed the RF input with the reception signal from the receiver.
LC display:
• channel (48)
• source (terrestrial)
• level (A = analogue; D = digital level measurement)
Use the
select the desired quality.
Briefl y press the button to store the latest settings and to
automatically turn off the device.
button.
, , , and buttons to
or buttons.
SETUP MENU
SETUP MENU SETTINGS
1. Setup menu
Press the button for longer than 5 seconds to turn off the device.
If you do so, the most recent settings will get lost.
The setup menu allows you to defi ne the basic settings.
To call up the Setup menu:
Press the
Press the
on or off. Press the
button.
or buttons to switch LNB power supply
button to keep the desired setting.
15
GETTING STARTED
In the next menu press the or button to defi ne the
measurement unit the level is to be indicated. Press
2. Setup menu
3. Setup menu
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
After you have set the low-level mute you automatically exit the
third setup menu.
DEFAULT SETUP SETTINGS AT TIME OF SHIPMENT
ParameterSetting
LNB DCOFF
LEVELdBµV
LOW LEVEL MUTEON
to
button to keep the desired setting.
MAINS AND BATTERY OPERATION
The MSK 125 can be operated on the mains or by means of its
integrated battery.
MAINS OPERATION
Remove the supplied AC power unit (100 V ... 250 V) from the
packaging and connect it to the device and mains. The integrated
lithium-ion battery and the green LED next to the
indicate the external power supply.
For mains operation use only the supplied power unit. The
power unit is connected to the XLR power supply socket on the
left side of the device.
For longer times the devices is not used it should be connected
to the mains occasionally (trickle charge)
Note: A 12 V vehicle supply cable can be obtained through
our customer service (company ESC, address see page 67)
(order no.: 19700841BF).
button
16
BATTERY OPERATION
GETTING STARTED
Before operating the device for the fi rst time remove the T 8.0 A
fuse from the packaging and place it in the fuse holder.
This fuse prevents the device from being switched on accidentally
during transportation.
Note
After the fuse has been inserted the charging status display does
not function properly until the battery has been fully discharged
once.
Battery operation is only possible if the battery is charged suffi ciently.
Otherwise the MSK 125 cannot be switched on.
Once the battery has fully discharged it must be recharged
immediately to avoid damage to the battery.
Charging starts automatically after the device has been connected
to the mains. The battery cannot overcharge thanks to a protection
switch.
Battery operation is signalled by a red LED next to the
button.
The battery capacity is 6.45 Ah.
Press the
ion battery.
The LC display indicates the following values:
• LNB or remote feeding voltage: 14.0 V
• LNB or remote feeding amperage: 255 mA
• 22 kHz switch on
• Battery charging status: 80 %
• Bar graph (8 x 10 %)
button to check the charging status of the lithium-
Press the
button again to exit this operating mode.
17
SAT
ANALOGUE SATELLITE RECEPTION
In SAT mode the MSK 125 can be adjusted to “Analogue” and “DVB S(2)” reception types.
SA T ANALOGUE/DVB-S(2) SWITCH
Press once = SAT analogue
Press again = DVB-S(2)
Press again = SAT analogue again
FREQUENCY DISPLAY AND ENTRY
To measure the level of a reception signal, you must fi rst enter
the desired frequency. The LC display indicates the frequency
and the measured level. The frequency can be entered
from 920 MHz to 2150 MHz in 100 kHz intervals.
COMMAND OVERVIEW OF SAT FREQUENCY ENTRY
Switch to satellite reception (analogue or digital)
Example
... Enter frequency
Frequency can be changed in 100 kHz intervals
Confi rm entry
LC display:
• Frequency: 1288.0 MHz
• Operating mode: SAT
• Level: 66.5 dBµV A (A = analogue)
To enter the frequency 1508 MHz:
Press
LC display:
• Frequency: 1508.0 MHz
• Operating mode: SAT
• Level: 86.5 dBµV (A = analogue)
A “+” or “-” on the display means that the MSK 125 has not been
adjusted precisely to the desired carrier. Use the
and
Note
18
buttons to refi ne the frequency for optimum reception. A
vertical line on the display indicates optimum frequency adjustment.
Complete your frequency entry by pressing the
The most recent frequency setting remains even after you switch
the MSK 125 off if it has been entered with digits and confi rmed
by pressing
.
button.
SAT
LNB VOLTAGE AND 22 KHZ CHANGE-OVER
The LNB supply voltage is available at the RF socket. To turn on or
The following voltages can be
called up via button command:
change the LNB voltage, press the
The LNB voltage
• can be switched off = 0V
• can be adjusted from 5 V to 20 V in 0.1 V intervals
• is short-circuit proof (max. amperage 600 mA from 5 to 20 V)
ButtonLNB voltage
[0]0 V
[1]12 V
[2]14 V
[3]18 V
[5]5 V
[8]22 kHz
For checking purposes the LED right from
when the power supply is turned on.
button.
button is on
Command overview for LNB voltage
Example
Press the
connected LNB on the display.
The additionally connectable 22 kHz signal will superimpose the
LNB voltage. It is necessary e.g. for the change-over of multi-feed
systems or high band/low band LNB’s.
Call the LNB menu
...Select LNB voltage
or Change LNB voltage in 0.1 V intervals
22 kHz signal on/off
Exit the LNB menu
Calling up 14 V LNB voltage:
Press the
LC display:
• LNB voltage: 14 V
• Current consumption: 150 mA
button to indicate the power consumption of the
buttons
19
“SAT ANALOGUE” LEVEL MEASUREMENT
After you have set a frequency the level is measured automatically
and indicated on the LC display in dBµV or dBmV (depending on
the basic confi guration). The input level can be measured in the
range of 30 dBµV to 120 dBµV (-30 dBmV to 60 dBmV).
LC display:
• Frequency: 1508.0 MHz
• Operating mode: SAT analogue
• Measured level: 86.5 dBµV
Level overfl ow and underfl ow
At a level < 30 dBµV the LC display indicates an underfl ow.
The following details are displayed:
• Frequency: 1508.0 MHz
• Operating mode: SAT analogue
• Level: underfl ow
SAT
At a level > 120 dBµV the LC display indicates an overfl ow.
The following details are displayed:
• Frequency: 1508.0 MHz
• Operating mode: SAT analogue
• Level: Overfl ow
Note
The level of DVB-S(2) signals can only be measured properly
with the setting “SAT digital reception”.
SOUND CARRIER FREQUENCY SETTING
Every analogue satellite video signal has multiple audio carrier
frequencies assigned. On the MSK 125 you can listen to main and
sub-audio carriers you choose. The audio carrier frequency can be
adjusted from 5.0 MHz to 8.99 MHz in 10 kHz intervals. At 7.00 MHz
the sound carrier bandwidth is automatically switched from “wide”
(280 kHz) to “narrow” (150 kHz).
By default the following sound carrier frequencies are stored:
Command overview for SAT audio carrier frequencies
SELECT SOUND CARRIER
Example
Note
Example
Launch the audio carrier menu
...Select audio carrier
or Change audio carrier frequency in 10 kHz
intervals
Manually switch audio carrier bandwidth
wide = 280 kHz, narrow = 150 kHz
Exit the audio carrier menu
Call the 7.38 MHz audio carrier
Press
LC display:
• Audio sub-carrier: 7.38 MHz
• Audio carrier bandwidth: Narrow = 150 kHz
• Operating mode: SAT analogue
After the SAT analogue mode is called the MSK 125 is always
set to 7.02 MHZ audio carrier. Frequency changes to the audio
carrier are only kept until you exit the SAT analogue mode.
To set the headphones output to “Stereo”, fi rst select the
desired left channel and then confi rm by pressing the “0” button.
The headphones output now delivers the 7.02 and 7.20 MHz stereo
sound.
21
Example
SAT
Switching on the 22 kHz signal
Press the
LC display:
• LNB voltage: 14 V
• Current consumption: 150 mA
• 22 kHz signal switched on
Note
Press the button again to switch off the 22 kHz signal.
Press
button
to exit the LNB menu.
DIGITAL SAT RECEPTION
In SAT mode the MSK 125 can be adjusted to “Analogue” and “DVB S(2)” reception types.
FREQUENCY DISPLAY AND ENTRY
To measure the level of a reception signal, you must fi rst enter the
desired frequency. The LC display indicates the frequency and the
measured level. The frequency can be entered from 920 MHz to
2150 MHz in 100 kHz intervals.
COMMAND OVERVIEW OF SAT FREQUENCY ENTRY
Switch to satellite reception (analogue or digital)
... Enter frequency
Frequency can be changed in 100 kHz intervals
Confi rm entry
LC display:
• Frequency: 1236.0 MHz
• Operating mode: SAT
• Level: 86.5 dBµV D (D = digital)
Example
To enter the frequency 1236 MHz:
Press
22
Note
SAT
LC display:
• Frequency: 1236.0 MHz
• Operating mode: SAT
• Level: 86.5 dBµV (D = digital)
Complete your frequency entry by pressing the
The most recent frequency setting remains even after you switch
the MSK 125 off if it has been entered with digits and confi rmed by
button.
pressing
.
LNB VOLTAGE AND 22 KHZ CHANGE-OVER
The LNB supply voltage is available at the RF socket. To turn on or
change the LNB voltage, press the
The LNB voltage
• can be switched off = 0V
• can be adjusted from 5 V to 20 V in 0.1 V intervals
• is short-circuit proof (max. amperage 600 mA from 5 to 20 V)
The following voltages can be
called up via button command:
ButtonLNB voltage
[0]0 V
[1]12 V
[2]14 V
[3]18 V
[5]5 V
button.
[8]22 kHz
For checking purposes the LED right from
when the power supply is turned on.
Press the
connected LNB on the display.
The additionally connectable 22 kHz signal will superimpose the
LNB voltage. It is necessary e.g. for the change-over of multi-feed
systems or high band/low band LNB’s.
button to indicate the power consumption of the
button is on
23
Command overview for LNB voltage
Example
SAT
Call the LNB menu
...Select LNB voltage
or Change LNB voltage in 0.1 V intervals
22 kHz signal on/off
Exit the LNB menu
Calling up 14 V LNB voltage:
Note
Example
Press the
LC display:
• LNB voltage: 14 V
• Current consumption: 150 mA
By pressing the or button you can change the LNB
voltage in 0.1 V intervals.
Press
Switching on the 22 kHz signal
Press the button
LC display:
• LNB voltage: 14 V
• Current consumption: 150 mA
• 22 kHz signal switched on
buttons
to exit the LNB menu.
Note
24
Press the button again to switch off the 22 kHz signal.
Press
to exit the LNB menu.
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