Rover Instruments DM14B/C DIGIMAX User manual

DM14B/C DIGIMAX
USER GUIDE and
MENU NAVIGATION
COMBINED DIGITAL & ANALOG
PROFESSIONAL ANALYZERS FOR:
RADIO, TV, CATV & SATELLITE
4-2250 MHz QPSK-COFDM-QAM-MPEG
Subject to change without notice

DM-14B & DM-14C User’s Guide
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Code: UG-DM14B-14C
Title: DM14B & DM14C User’s Guide
Edition: 1.16/2.0-EN/1.00
Draft Version

DM-14B & DM-14C User’s Guide
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INDEX
Useful Suggestions ...........................................................................................................................5
Satellite Dish pointing (Sat Point Function) ......................................................................................11
Configuration Menu........................................................................................................................13
Special functions menu & video test pattern Generator .......................................................................14
Program Store Menu (Memory) ........................................................................................................15
Program Store Sat Menu (memory) Examples.....................................................................................16
Program Store Radio Menu (memory) Examples.................................................................................16
Program Store TV Menu (memory) Examples.....................................................................................17
Analogic TV Measurement...............................................................................................................18
Funzione Video Lines .....................................................................................................................19
Funzione H-Sync for DM-14B..........................................................................................................20
S/N Measurement for DM-14C… Being Prepared ...............................................................................21
Demodulated COFDM Digital TV measurements................................................................................22
Demodulated COFDM Digital TV measurement COSTELLATION........................................................23
Demodulated COFDM Digital TV Measurements: SERVICES..............................................................24
COFDM parameters automatic search help function............................................................................25
Emulated COFDM Digital Tv Measurement .......................................................................................26
Demodulated QAM Digital TV measurement......................................................................................27
Demodulated QAM digital TV measurements CONSTELLATION.........................................................28
Demodulated QAM Digital TV Measurement Services ........................................................................28
QAM Parameters Automatic Search Help Function.............................................................................30
Emulated QAM Digital TV Measurement..........................................................................................31
Misura TV Digitale 8VSB Demodulata..............................................................................................32
Demodulated 8VSB Digital TV Measurement Constellation.................................................................33
Demodulated 8VSB Digital TV Measurement Services........................................................................34
Help Function & Automatic Search for 8VSB parameters....................................................................35
FM Radio Measurement...................................................................................................................36
DAB Measurement..........................................................................................................................37
Analogic Sat Measurement ..............................................................................................................37
Demodulated Digital Sat QPSK Measurement ....................................................................................38
Demodulated Digital Sat QPSK SERVICES .......................................................................................39
QPSK Parameter AUtomatic Search Help Function.............................................................................41
Analog TV Spectrum.......................................................................................................................42
COFDM-QAM-8VSB Spectrum ........................................................................................................43
FM Radio Spectrum ........................................................................................................................44
DAB Spectrum ...............................................................................................................................45
Analog Sat Spectrum.......................................................................................................................46
QPSK Spectrum..............................................................................................................................47
V.SAT Spectrum Mode....................................................................................................................48
Sat Point Spectrum Mode ................................................................................................................49
ΔMRK SPECTRUM MODE .............................................................................................................50
ΔMRK-C/N SPECTRUM MODE.......................................................................................................51
MKR BW Spectrum Mode................................................................................................................52
SPECTRUM FUNCTION MRK BW PWR............................................................................................53
Live & Recall Spectrum Function.....................................................................................................54
Scroll Menu Function......................................................................................................................54
Special TV Bars Scan Function ........................................................................................................56
Special RPL Spectrum Function .......................................................................................................57
Sat Finder… Being Prepared............................................................................................................58
Special Reflectometer Bridge Function (to measure short circuit or interruption in coax cables...............58
Function: Commans For DiSEqC 1.2 Rotor........................................................................................61
DESCRIPTION OF THE VARIOUS FUNCTIONS ..............................................................................62
Fast & Advanced Autoscan Function (Automatic TV Search)...............................................................63
DATA LOGGER Measurement SAVE ...............................................................................................65
Data Logger ‘‘Measurement’’: RECALL............................................................................................66

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FILE Manager FILE........................................................................................................................67
FILE Manager INFO .......................................................................................................................68
FILE Manager SHOW .....................................................................................................................69
FILE Manager RENAME .................................................................................................................70
FILE Manager DELETE ..................................................................................................................71
FILE Manager DEFRAG..................................................................................................................72
APPENDICES
A1 – Technical Specifications..........................................................................................................73
A2 - SMART Program.....................................................................................................................80
1.0 How to connect your measuring instrument to a PC .............................................................................81
2.0 Firmware Upgrades ...................................................................................................................82
3.0 Get Screen................................................................................................................................84
4.0 Instrument File Manager (Data Logger Transfer) ..........................................................................85
5.0 Instrument File Manager............................................................................................................87
6.0 How To insert User Data............................................................................................................89
7.0 Instruments File Manager (Memory Plan Management)..................................................................91
8.0 Instrument File Manager (Standard Channel Plan Management.......................................................93
9.0 Licence Information ..................................................................................................................95
A3 – Scart Socket Connection..........................................................................................................96
A4 - Null Modem interface Cable.....................................................................................................96
A5 – Trouble Shooting....................................................................................................................97
A6 - Lead Battery Maintenance and Recharge....................................................................................98
A7 - Accessories ............................................................................................................................99
NOTES..........................................................................................................................................99
A8 - Front & Side Panel Descriptions .............................................................................................101
A9 - How to Use the Bag’s front Panel Protection flap in Digimax Instrumets..................................... 103
A10 - Service Notes and Guarantee Regulations............................................................................... 104
A11 - Fault Identification Form ..................................................................................................... 105
A12 - Standard Rover equipment repair and/or Service Form............................................................. 106
A13 - Memory Plan Table.............................................................................................................. 107
NOTES........................................................................................................................................ 111

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USEFUL SUGGESTIONS
1) Thank you for choosing our measuring equipment, which is currently used and appreciated by the most important
Satellite Service Providers, Broadcasters and by many installers, because it is user friendly and provides complete
and accurate measurements. On our part, we will do our best to fulfil your requirements now and in the future.
2) This is a new concept, quick user guide that is easy to consult. Select the function/measurement you need directly
from the index and on the respective page you will find all the relative menus.
3) First of all please do not be concerned about the large quantity of menus found on the following pages; as this meter
is the most complete and advanced TV & SAT analyser available on the market, it is clear that it is capable of
carrying out many measurements. If you take a closer look you will notice that the menus are similar and basically
divided into two groups: MEASUREMENTS and SPECTRUM.
• MEASURE: analogue TV, COFDM, QAM & 8VSB digital TV, analogue Sat & QPSK digital Sat, Radio FM and
DAB.
• SPECTRUM: analogue TV, COFDM, QAM & 8VSB digital TV, analogue Satellite and digital QPSK satellite,
Radio FM and DAB.
4) You will also see from a very early stage that all you have to do is store the various plans (PLAN) and programs
(PRG) (or ask your supplier to do it for you using the PC program, opt. SMART PRO), then choose the plan
(PLAN) and the program (PRG) needed each time. Select the spectrum function (SPECT) or the measurement
function (MEAS) and the meter will do everything automatically. Isn’t that great? We also suggest you photocopy,
cut–out and fill-in the tables on pages 108/109 and insert them in the transparent pocket in the instrument’s bag flap.
5) Important: The instrument leaves the manufacturer with some default settings for test and demonstration purposes:
a) The instrument turns off after 5 minutes' inactivity, for transport by air.
This setting can be modified from the CONFIGuration menu (see page 12).
b) Check that you are using a meter with the correct channel plans for your country.
It is possible to modify this setting from the CONFIGuration menu (see page 12).
c) Some plans have been previously stored in the meter using one or more programmes in the various operation
modes, for example:
PLAN MODE PLAN MODE
1 ANALOG TV 80 Mixed for
2 FM RADIO 81 factory tests
3 QAM
4 COFDM
5 ANALOG SAT
6 QPSK
7 DAB-PLAN
8 ASTRA 19,2 E
9 EUTELSAT 13°° E
6) The most important keys are:
ON/OFF switch and Reset button (keep it pressed for 10 seconds to activate the RESET function if
the meter stalls).
For measurement mode selection, (AN. TV, QAM, COFDM, AN. SAT, QPSK, FM RADIO, DAB)
For memory plan selection from 1 to 99.
For stored prog selection from 1 to 199, chan, LNB & DiSEqC power supply, freq.
Frequency selection (keep pressed for 2 seconds to activate RPL spectrum function)
N.B. These are only examples to
help you use and understand your
meter. We suggest you store a
mixed plan for every town or for
every type of installation or
modulation. Important: Do not
cancel these channel plans.
To select MEASURE or SPECTRUM mode and ESCAPE, to quit the various menus
and go directly to measurement mode

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To select PLAN–PRG–CHAN–FREQ increase, etc.
To activate, confirm and/or quit the various menus, measurements or settings
(keep pressed for 2” to activate the numerical keyboard and the scroll menu)
Activates, in cycles, the various measurement levels.
Activates/disactivates the various menus related to the activated function.
N.B. Dual function keys: when you see the words 2" or 10” (2 or 10 seconds) written above the keys, you should keep
the key pressed for 2 or 10 seconds to activate the second function.
All the remaining keys are just as easy to use and you can find complete descriptions on the last page (folded) of this
guide: we suggest you open it out for easier use.
To use the numerical keyboard (SHIFT function), keep the key pressed for 2 seconds,
digit the number of the plan, channel, program, frequency etc. and press again to confirm.
If you prefer, you can adjust/select all the various parameters by rotating the encoder knob.
7) We promised you a user–friendly instrument, capable of doing everything by itself (or nearly); as you can see when
you are in measurement mode (MEAS) the upper part of the screen shows all the settings, for example: MODE–
PLAN–PRG–CHAN– FREQ–LNB– DiSEqC, etc. whereas the lower part of the screen shows all the measurements.
These can be seen individually or all together, by pressing the MORE MEAS key once according to the
measurement level you require (you can program levels 1–2–3 in CONFIG. See p. 12)
8) If when navigating within the measurements you change any parameters, the program number will disappear.
Simply press PRG and reselect the previous program number by pressing the arrow keys to recall the previous
parameters, or if you want, press MEMORY to store the configuration you are using (see page 14).
9) Now, please read the index on page 3, then carefully study the three most important menus to start:
• CONFIGURATION MENU Page 12
• SPECIAL FUNCTION MENU Page 13
• PROGRAM STORE MENU Pages 14-15-16
You will learn the remaining functions in a few days by using the instrument. The first time you use the meter, we
strongly advise you connect it to a satellite dish or antenna which has already been installed and is operational and
where you know the channels and frequencies well.
10) As you can see, in MEASUREMENT mode, the top left hand side of the display shows in which function you are
positioned, for example: QPSK. The upper part of the screen shows all the meter's settings (MODE), for example:
PROG–CHAN–FREQ etc., which can be directly recalled using the respective, direct function keys. The lower part
of the screen shows the POWER/LEVEL measurement and if you press the key MORE MEAS key once or twice
you can recall all the other measurements, which can be carried out. By pressing SPECTRUM, the meter instantly
shows, in the lower left-hand side of the screen, the mode you are in. (Remember that the spectrum can be automatic
or manual, see relative MENU).
11) You can navigate in every screen using the UP and DOWN keys and in measurement mode using the direct function
keys. Please remember that this type of navigation is the same for all of your meter's menus and screens and that
when you are in digital mode, the response of the various menus becomes a little slower.
12) Now go to the CONFIGURATION MENU, keep the SPECIAL key pressed for two seconds (see page 10). Select
your country's standard, the measurement unit you prefer and the TIMER setting (if you set "5 min" the meter turns
off after 5 minutes of inactivity and re-starts from the last measurement without losing data). You can adjust the
To select PLAN–PRG–CHAN–FREQ decrease, etc

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volume of the keys’ beep sound. To exit CONFIG. MENU press ESCAPE/MEAS. Please avoid using the
cancellation menu of the memory banks until you are confident with the use of the meter.
13) Now let us take a look at the SPECIAL MENU (see page 13). To reach this menu, press the SPECIAL key once:
• SELF TEST:this is used if there are faults to see which parts are not communicating and to obtain the various
data information needed to inform the ROVER service (including the SW and FW versions and the instrument’s
serial number SN).
• A/V MONITOR: forces the video/audio input from the Scart socket (even without 12 V on the relevant PIN).
• TEST MONITOR: generates a test pattern (which can be used to test TV DC installations).
The video is available on pin 15 of the SCART socket.
• RF/IF INPUT SEL: selects the meter’s RF IN, either RF or IF: (38.0 / 38.9 / 45.75 MHz)
• VOLTMETER: measures the AC/DC voltage present at the RF connector.
• REFLECTOMETER: to measure the distance of a short circuit, interruption or mismatching in coaxial cables.
• AUTO SCAN (TV): to scan a channel plan for the search of analog or digital (COFDM) TV channels and
the relative automatic memorization inside the plan.
• FILE MANAGER: for file management (canalizations, plans, loggers, etc…) in the memory.
14) BARS SCAN FUNCTION: This activates the bar chart graphics representation. In a display it is possible to see the
level/power of all the TV programmes stored in a plan. This function is useful for tilt adjustments and equalizations
in cable distribution networks and headends.
15) NAVIGATION IN MEASUREMENT MODE (from pages 17 to 35) the various parameters can be quickly
changed using the direct function keys. We remind you once again that in this case the program number disappears.
At this point you have two options:
a) Press the programme key and select the same or another program number.
b) Press MEMORY and store the selected parameters previously modified (see page 14).
16) NAVIGATION IN SPECTRUM MODE (from pages 36 to 47): the various parameters can be navigated using the
arrow and ENTER keys and are the same as those used by other more expensive, professional spectrum analysers.
The measurement dynamic range and the spectrum speed of this instrument are by far the best in this category and
despite everything, AUTOMATIC mode is very easy to use. Let’s take a look at some of the main functions:
• Reference level: this is the level of the reference line (the first line at the top of the grid) is adjusted
automatically to the carrier with the highest level inside the SPAN. When the SPAN varies, press SPECTRUM
twice to up-date and obviously you can also manually adjust it using the UP & DOWN keys. (N.B. The ref.
level corresponds to the attenuator of previous instruments). Remember that each time you change mode or turn
on the instrument again the ref. level automatically returns to the top of the ref. level (also in manual mode).
• Marker Frequency: shows the marker frequency (vertical dotted line); automatically in digital and analogue
SAT and it always positions in the centre of the carrier, whereas in analogue TV it always positions on the video
carrier. N.B.: The FREQUENCY MARKER is basically the meter's frequency tuning; in fact the marker can be
moved on the various carriers and when you go to MEAS mode you are automatically positioned on the same
frequency. If this frequency is exactly the same as one of the memorised channels, you will also see the relevant
channel, otherwise the display shows 3 lines (to remind you that something has been changed). Important: the
cursor also navigates outside the SPAN's limits, to the far left (start), to the far right (stop). If you release the
arrow keys every now and then, the tuned carriers are shown (the ones that were previously out of the SPAN
range). Naturally if you change from SPECT to MEAS, you can go directly to the tuned carrier/channel. For
easier viewing in Analogue TV and with 10 MHz SPAN, the centre of the channel will be positioned in the
centre of the display, whereas with the rest of the SPAN the marker is positioned in the display's centre.
• Marker level: shows the level of the signal measured by the marker (horizontal dotted line with crosses) and is
connected to the marker frequency position.
(N.B. When the MRK level line is on the highest carrier, it may be confused with the REF LEVEL line, the
highest line on the grid and become invisible).
• SPAN: this always shows the total bandwidth in MHz between the extreme left and extreme right of the display
(if you divide the value by 10 you can obtain the value of each square division).
• dB/div: shows the value in dB between each division of the horizontal grid. This is very helpful if you require a
wide dynamic range, e.g. 10 dB/div., to see noise AND interferences or a high resolution, 1 dB/div. For very
accurate SAT dish pointing both in SAT & TV. In this condition you can easily appreciate variations in dB
decimals.
• MODE: it shows which mode the instrument is working in (the various digital or analogue modulations, TV or
SAT etc.) and in SAT, you can also select the satellite dish pointing function; it automatically sets the spectrum
to easily point any satellite dish. To quit this function press ESCAPE/MEAS. MODE can also be used to select
the V.SAT function, providing a high resolution spectrum for V.SAT and SCPC installations.
May we remind you that when you press MENU you can also select:
• SPECTRUM: automatic or manual. If positioned on AUTOMATIC it always adjusts the SPAN and the dB/
so you can see the carrier, which is being examined.
• DEFINITION: high, medium, low. This increases the spectrum speed (to facilitate dish pointing).

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• PICTURE: spectrum with outlines only or full white
• ∆MARKER: freq./level difference between two signals and C/N measurement
• MARKER BW: to adjust filters, amplifiers, etc. and to measure digital power in SPECT mode “BW–PWR”.
• MAX HOLD: peak memory. Maintains the max. peak reached during a series of measurements
• DC at RF in: output power supply (5, 12, 15, 18, 24 V – OFF).
• LNB L.O.: local oscillator.
• BUZZER: ON/OFF activates an acoustic sound which varies with the signal level or digital satellite quality.
17) EMULATED COFDM/QAM DIGITAL TV MEASUREMENTS (DEMODULATED MEASUREMENTS:
COFDM supplied, QAM optional): These allow you to carry out perfect average power and C/N measurements,
provide a BER evaluation and the quality of the signal (FAIL–MARGINAL– PASS).
HOW THE EMULATED DIGITAL MEASUREMENT WORKS: The signal is measured in RF based on the
C/N measurement and multiplex flatness. Thanks to a series of special algorithms, defined and registered by
ROVER in co–operation with some UK DTG (Digital Terrestrial Group) engineers in 1998 and later optimised, it is
possible to provide a good signal evaluation in both cases of adjacent and non–adjacent channels (selectable n/f –
near/far) without demodulating the digital signal. The measurement accuracy is very high, except in rare cases of
interference completely hidden under the digital multiplex spectrum.
18) LNB-POL & DiSEqC: as you have already seen, there are two different settings, which make the instrument the
most complete and easiest to use in the world:
• LNB: OFF, VERT HIGH, VERT LOW, HORIZ HIGH and HORIZ LOW Polarization
• DiSEqC: off–a–b–c–d, the combination of these two parameters enables you to select the various multi-switches
with 4 cables “a”, 8 cables “b”, 12 cables “c”, 16 cables “d”.
19) You can obtain other very interesting spectrum functions with your instrument if you connect it to an optional noise
generator, for example the “CNG–80” or “CNG–70”:
• Scalar network analyser (wobulator), in “MRK BW” spectrum function, for the calibration and test of channel
filters, amplifiers, splitters, traps, outlets, coaxial cables and relevant VSWR or R.L. measurement of standing
waves ratio (with a reflect meter bridge).
• Coaxial cable reflect meter (“∆MRK” spectrum function) to measure the distance of a short circuit or
interruption in coaxial cables (using a "T" connector and slide rule).
20) RESET: if the meter stalls and you are unable to turn it off, keep the ON key pressed for 10 secs and the instrument
will immediately restart. If you find that the instrument always blocks in the same situation, please contact the
manufacturer and you will be given, as an award, a year's service free of charge in addition to the standard one.
21) SOFTWARE UP–GRADE: As you well know, another excellent function of this meter is the possibility of up–
grading software free–of–charge via internet. To carry out this operation, consult Rover Instruments web site
(www.roverinstruments.com) and/or contact the service in your country.
22) START–UP MENU: this appears for two seconds every time you turn on your instrument and contains all the
information necessary for the service technicians in the case of repairs or software up-grades via internet (you can
find the same data in the SPECIAL, SELF TEST Menu).
23) We suggest turning off the meter when connecting or disconnecting the RS232 interface.
24) It is possible to store separate or mixed multi–standard plans (e.g. France/Europe or China/Hong Kong) according to
your requirements.
25) The instrument is supplied with interchangeable input connectors “F”, “BNC”, “IEC” or “N”.
26) If the TV signals are weak, or have lots of interference, and you have difficulty in tuning the TV pictures, exclude the
OSD and reactivate it, this operation should help you to tune TV pictures.
27) If the words on the screen do not tune during the frequency tuning of analogue TV and SAT programmes, briefly
remove the signal from the RF input and the words should stabilize.
28) If the instrument loses the vertical sync., with TV and SAT analogue pictures, press MENU and check that it is set to
the correct standard: 50 Hz PAL-SECAM and 60 Hz NTSC.
29) To eliminate the MENU words, press the MENU key.
30) Linear bar chart for level/power with memory & digital quality, e.g. QPSK, these are available in MEAS level 2.

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N.B. With reference to fig. 8, the NETWORK name you can read in the centre to the right, e.g. NETNAME=SKY, is the
NET.ID table transmitted via satellite by the operator and which the instrument reads by extracting the information
from the MPEG data. However, the prog. name, read in the centre to the left under the word MENU, e.g. PROG
NAME: SKY1, is the one you, or your dealer, has pre-stored and can be varied only using a PC, opt. (see page 19).
N.B. When you activate MORE MEAS 3 (where available) and MENU, due to problems with space, the quality bar chart
and the level/power bar chart both respectively disappear. The white arrow, near to the quality bar chart, indicates
the minimum quality required to achieve a PASS in automatic tests.
32) C/N MEASUREMENT
In some cases the C/N measurement of analog signals may vary with the level because when the level increases
some RF attenuators could be inserted. The automatic insertion of attenuators reduces the instrument’s sensitivity
and consequently reduces the C/N read on the screen, which will be less than the real one. To avoid this carry out
the following procedure:
•Select normal spectrum mode (without activating the C/N measurement)
•Fix the span at 200 MHz when in AN-SAT (analog satellite)
•Fix the span at 10 MHz (or 20 MHz) when in AN-TV (analog TV)
•Increase the REF-LEVEL (reference level) using the UP key, in 1 dB steps, until you see the noise lower by
approximately 10 dB
•If the noise goes under the line at the bottom of the screen, change the spectrum scale and set it at 10 dB/DIV (this
may occur in analog sat mode)
•Press MENU and select the ΔMRK (delta marker) activate the C/N select.
WARNING: make sure you do not press MEAS or any other key, because the attenuators will set using
standard values.
•Using the UP and DOWN keys bring the marker to the point where you want to measure the noise and read the
C/N value (which will correspond to the measurement filter bandwidth), in the window in the lower part of the
screen (ΔMRK C/N),
•May we remind you that when you measure the C/N in analog TV or SAT mode with the _MRK (without
specifying the C/N), the band correlation is not carried out automatically. In this case you should subtract 10 dB
from the measurement value if you are carrying our a satellite measurement, and 16 dB from the value for TV
measurements.
33) C/N Measurements in emulated COFDM demodulation mode.
We suggest following these rules when carrying out emulated C/N measurements:
•Use C/N far when there are adjacent channels
•Always use C/N NEAR when there aren’t any adjacent channels
•If you are carrying out measurements on a head-end with selective filters and channel converters, only use the C/N
near measurement. In this case the C/N far measurement could measure a higher C/N than the real value.
To fix a C/N far or C/N near measurement, activate the configuration menu (see page 10 which contains the
configuration menu description).

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DM-14B & DM-14Color Digimax
The DM-14B and DM-14Color meters allow you to visualise digital pictures of non-encrypted services (FREE-TO-AIR),
contained in the digital signals received at the RF input of the meter, in other words:
-Digital transponder transmitted via satellite with QPSK encryption,
-Digital multiplex transmitted via ether with COFDM encryption,
-Digital multiplex transimitted via cable with QAM encryption.
There are many services (TV or Radio programmes) inside a digital signal, such as the ones listed above. The
MPEG board allows you to see/listen to any of these services as long as they are not encrypted. To select one of
these services and obtain both the picture and the data of the Audio and Video PID, please refer to the
description of the “SERVICES” option in the MENU described on pages 22-27 and 34 of the manual.
It is important to note that when a digital signal is tuned and you want to see the picture of one of the services,
you should select a service using the “SERVICES” menu (see pages 22-27 or 34). Whenever a digital signal is
stored in a program in a memory plan, the visualization of the picture regarding a service contained within it
occurs only if this service was selected using the “SERVICES” menu. Consequently it is important to note that
every time you recall a digital program contained in any memory plan, the picture shown will be the one
belonging to the last selected service available for that transponder (see pages 22-27 and 34). If this selection is
not used, the board will not show any picture.
Example of a picture and relative data from the indicated transponder, obtained using the
“SERVICES” selection contained in the menu associated with digital signals.

DM-14B & DM-14C User’s Guide
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Fig.2 The carriers start to appear from the noise
Fig.3 Satellite dish pointing completed
SATELLITE DISH POINTING (SAT POINT function)
As this is a function which is used often and is, at the same time, facilitated by our automated high-resolution spectrum, we
thought we would dedicate a chapter to this subject (please also refer to the “QPSK” SPECTRUM).
a) Activate SAT mode, analog or QPSK (whichever you prefer).
or simply select a SAT programme, preferably in centre band, already pre–stored to receive the satellite and relative
band and polarization you require (e.g. Hot bird 13° E, VE lHI ↑, 11842,0 MHz).
b) Press SPECTRUM.
c) Press ENTER (to quit MRK FREQ)
d) Press the key twice to go to MODE.
e) Press , and press once or twice to go to
f) Connect the LNB assembled on the dish to the RF IN of your meter.
g) At this point the SAT POINT function has already automatically set the best SAT spectrum vision for you to carry out
satellite dish pointing, without having to touch your meter again (see fig.1).
h) Start pointing your dish (whose elevation has already been adjusted) in the correct direction until you can see some
carriers appear out of the noise and maximise them as shown in the two examples below (fig. 2 and 3). In theory the
satellite dish pointing is now complete; later we will see how to make it perfect and/or simplify the procedure using
some of the instruments special functions.
Fig.1 LNB noise, without carriers

DM-14B & DM-14C User’s Guide
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i) Now select 1 or 2 dB/DIV (in the lower right hand corner); in this configuration you have maximum spectrum
resolution, which allows you to perfect your dish pointing. If the carriers go over the reference level, increase it by 1
or 2 dB to see all the transponder peaks.
j) At this point, return to 5 dB/div., you could also press the MENU key and activate MAX HOLD, bringing it to ON,
press MENU again to remove the descriptions. MAX HOLD function shows in white the spectrum at the maximum
peak measured. You can therefore check that the pointing is actually at the maximum (this is a fast and precise
system, see fig. 5).
k) Press MENU again, remove the MAX HOLD and if necessary reselect HIGH definition, then adjust the cross
polarization to achieve the best results (this can also be carried out in MEAS, by bringing to the maximum the Noise
Margin value and the respective total quality bar).
l) Go to measurement mode by pressing the MEAS key (level 1) and in the lower half of the screen you can see the
POWER value of the signal received (see fig. 6). Press the MORE MEAS key (level 2) and, if everything has been
stored well and you have pointed your satellite dish correctly, you should have all the measurements in the lower half
of the display, as shown in the example below (fig. 7).
N.B. By passing into MEAS you quit the SAT POINT function (and also the V.SAT function). To return, repeat the
operation from point b) to point e).
Press MORE MEAS again (level 3) and you can see the NETWORK and BOUQUET names as well as all the other
data and check to see if you are receiving the correct satellite/bouquet (N.B. Level 3 is the menu excluding the quality
and level bars, see fig. 8).
m) If, in the images shown in fig. 7 or 8 lines appear instead of measurements, it means that you have carried out the
wrong satellite pointing or storing procedure. Check everything once again and the first times always refer to a dish
that is already operational. In any case go to SPAN 50 MHz and see if there is a carrier exactly in the centre of the
marker (if there isn’t you are on the wrong satellite, or band, or polarization, or symbol rate, or frequency).
N.B. With reference to fig. 8, the NETWORK name you can read in the centre to the right (e.g. NETNAME=SKY) and the
other information are those transmitted via satellite and which the instrument obtains by extracting from the MPEG data.
However, the program name, read in the centre to the left under the word MENU, e.g. PROG NAME: SKY, is the one you,
or your dealer, has pre-stored and can be varied only using a PC, opt., see page 19. Adjust only using a PC or cancel all the
respective plans using the file manager DELETE, see pages 19 and 59.
Fig.4 1 dB/DIV spectrum for fine pointing
Fig.6 QPSK measurement, level 1,
with power bar
Fig.5 MAX HOLD function, peak memory
Fig.8 QPSK measurement, level 3,
with N.ID plus MENU
Fig.7 QPSK measurement, level 2, with power
bar to the left and quality to the right, the white
arrow shows the suggested minimum quality.

DM-14B & DM-14C User’s Guide
13
CONFIGURATION MENU
Keep pressed (hold)
for 2 seconds

DM-14B & DM-14C User’s Guide
14
SPECIAL FUNCTIONS MENU
& VIDEO TEST PATTERN GENERATOR

DM-14B & DM-14C User’s Guide
15
PROGRAM STORE MENU (MEMORY)
The MEMORY MENU is very easy to use and is required to store programs. Basically, if you rotate the encoder, you
move the cursor (grey background) to the line that corresponds to the parameter to be adjusted, for example QPSK as
shown below.
Press the encoder and it will position on the value of the parameter/status you want to adjust/store. (See example under the
frequency line). Once the data required has been adjusted, rotate the encoder and press it again to quit. Rotate the encoder
again to go to STORE? or OVERWRITE? (STORE? appears automatically if the program number to be stored in the plan
has not yet been used, alternatively the word OVERWRITE? appears, to allow you to overwrite/replace an existing
program). Press encoder again to store the program. The program number increases one number at a time, e.g. it will go to
2 (only if the programs have never been stored before, if not go ahead one at a time manually). The cursor will go to the
parameter to be adjusted (e.g. frequency for the QPSK function shown below). If you do not need to modify any other
parameters, adjust only the frequency of the next program, for example 2. Press the encoder again to quit and using the
arrow keys go to STORE, press ENTER again to store and continue until you have completed all the channels/programmes
required.
N.B. You can store without navigating on STORE? by pressing MEMORY for 2 seconds.
It is possible to store up to 199 mixed programmes for each plan in each of the various modes of the instrument (e.g.
RADIO-TV-SAT-etc even with different standards, for example France/Europe or China/Hong Kong or Russia/Europe)
To exit the PROGRAM STORE menu, press the MEAS/ESCAPE key and you will always go directly to the main menu
MEASURE. Press MEAS/SPECT again to go to SPECTRUM mode. Easy, don't you think? Remember that it is not
possible to store on identical programmes, because this is not necessary, however if you want to do this, simply move the
frequency by 25 KHz in TV and 100 KHz in SAT.
N.B. If in the MEAS menu, instead of the programme you find two small lines, you must have varied a parameter, enter in
the programme and bring it to the one required (or if you want to keep that configuration press MEMORY to store it).
The VHF channels, e.g. E10-Z10-S10 cannot be selected from the numerical keyboard, but must be selected using the UP
and DOWN keys.
REMEMBER THAT:
•You have 99 memory plans available
•You can store up to 199 mixed programs in each plan (RADIO-AN TV-QPSK-QAM- 8VSB - COFDM-DAB)
•We suggest you store a plan for each city or each type of installation; this will facilitate the registration of measurements
and data of the various installations (Data Logger) and the subsequent PC filing and print-out.
For your commodity you can note the plan and program in the table on pages 108 and 109.
2
”
to Store

DM-14B & DM-14C User’s Guide
16
PROGRAM STORE SAT MENU (MEMORY) EXAMPLES
RADIO MEMORIZATION MENU EXAMPLES

DM-14B & DM-14C User’s Guide
17
PROGRAM STORE TV MENU (MEMORY) EXAMPLES

DM-14B & DM-14C User’s Guide
18
ANALOG TV MEASUREMENT
How to reach measurement mode:
DIRECT = From any previously stored "PLAN" & AN. TV "PRG" you are already in AN. TV meas (analog terrestrial TV measurement).
NAVIGATION = Press rotate the encoder and select then navigate in the parameters at the top of the screen,
which can be reached directly using the respective keys, or by rotating the encoder pr Press to confirm the selection.
MORE MEAS
N.B. in level 2 and 3 the picture is
interrupted every 7 seconds to
measure the audio carrier

DM-14B & DM-14C User’s Guide
19
VIDEO LINES FUNCTION
(To visualise the synchro. active area and synchro oscilloscope and all the video lines)
(Useful for Analog TV and SAT and Video signals coming from a Scart socket)
THE MAIN OBJECTIVE OF THE MEASUREMENT IS: to analyse the SYNCHRO area of a video line in the amplitude dominium, to visualise eventual interferences or
reflections, as well as signal distortions and compressions.
DIRECT: To activate the H-Sync function, press the key for two seconds.
Synch. Visualisation
in VIDEO LINES
LINE ZOOM Synch. pulse visualisation
SYNC ONLY Synch. pulse visualisation

DM-14B & DM-14C User’s Guide
20
H-SYNC FUNCTION FOR DM-14B
(Visualisation of the Analog TV & SAT synchro. active area)
DIRECT: To activate the H-SYNC function, by pressing the key for 2 seconds, select SYNC AREA using the encoder.
The picture is moved and the synchro graphic generated, locked to the signal received, to show the function “visualisation of the active synch area”.
As you can see the darker bar (black) is the synchronism, the dark grey bars are the front and back on the synchro and the lighter bar represents the chroma BURST.
a) THE MAIN OBJECTIVE OF THE MEASUREMENT is to analyse the SYNCHRO H area in time, to visualise possible interferences or reflections, as well as signal distortions and
compressions.
b) In the synchro’s lighter bars, it is much easier to recognise all the various types and quantities of reflections and/or interferences, even with moving pictures, because this active area is not
influences by the contect of the picture and it should be clean in ordeer to have a perfect picture. For example, a white line to the write of the synchro represents a “reflected signal”, which is
whiter, stronger and viceversa.
c) When there are signal compressions and/or saturations, the dark/light areas tend to unify in intensity (compression) and distort (saturation). This function shows all the phenomena described
above, which are usually difficult to see with moving pictures or with a simple SYNC visualisation.
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