SEFRAM 7871 User manual

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7871-7872-7875-7876
EXPERT TV METERS
USER MANUAL
This product contains one or more programs protected under international and US copyright laws as un-
published works. They are confidential and proprietary to Dolby laboratories. Their reproduction or disclo-
sure, in whole or in part, or the production of derivative works there from without the express permission of
Dolby Laboratories is prohibited. Copyright 2003-2005 by Dolby Laboratories. All rights reserved.
May 2015 M7875001A/05

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Revision follow-up
Version / Date
Page or §
Changes
1.0 / March 2013
All
First manual
2.0 / April 2013
9.5.1
13.5, 13.6
25
16
Electronic compass
Add « (not available for 7871 and 7872) »
Add « Optical Power Measurement »
Echo / Guard interval
3.0 / June 2013
9.1
19.6.5
24
26
Updating satellites
Configuration
GPS
WiFi
4.0 / avril 2014
11.11
16
19.5
19.5.1
19.5.3
24.3.2
25
30.1
Measures DVB-C2
Echo/Guard Interval
Saves
View
Delete
Export GPS files
Optical Power Measurement
Specifications DVB-C2 + DVB-T2 Lite
5.0 / may 2015
3
11
14
19.7
30
General
Measurement FM-RDS, DAB/DAB+
LNB/DISEQC, DCSS
LCD
Specifications, Selection Guide,
FM-RDS, DAB/DAB+

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Thank you for purchasing this SEFRAM product and therefore trusting our company. Our different teams (research
department, production, sales department, after-sales service…) are aiming at satisfying your wishes by designing
and updating very advanced appliances.
To obtain the best performance from this product please read this manual carefully.
For more information please contact our different services
E-mail Sales department: [e-mail]
E-mail After-sales: [e-mail]
E-mail Technical support: [e-mail]
Fax: [phone]
Web: www.sefram.fr
Copyright Sefram, 2013. All rights reserved.
Any total or partial reproduction of this document must be submitted for Sefram written authorisation.

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GUARANTEE
Your instrument is guaranteed for two years for labor and parts against any manufacturing defect and/or functioning hazard.
This guarantee extends from the delivery date and ends 730 calendar days later.
In case of guarantee contract, this will cancel or replace these guarantee conditions hereabove.
The guarantee conditions by SEFRAM are available on the website www.sefram.com. The general guarantee conditions
should prevail on the following conditions that they sum up.
This guarantee does not cover the result of any abnormal use, handling mistake or mistake in the storage conditions outside the
defined range.
In case of application of the guarantee, the user shall return, at its own expenses, the relevant appliance to our factory:
SEFRAM Instruments & Systèmes
Service Après-Vente
32, Rue Edouard MARTEL
BP 55
42009 SAINT-ETIENNE CEDEX 2
And add a description of the observed breakdown to the appliance.
The standard supplies provided with the appliance (cables, outlets…), the consumables (batteries …) and the optional supplies
(suitcases…) are guaranteed for 3 months against any manufacturing defect.
Such items as a suitcase, a LCD screen or a touchpad are guaranteed only for a normal use.
The guarantee does not cover wearing, accidental breaks or consecutive to a shock or any abnormal use.
The factory options integrated to the appliance are guaranteed for the same duration as the appliance itself.
In case of replacement or repair of the product, the remaining guarantee duration shall be:
-The remaining duration of the guarantee if the appliance is still under guarantee
-If the guarantee duration is less than 90 days, the replaced part is guaranteed for 90 days
Any replacement part becomes the property of the user and the exchanged parts become the property of SEFRAM.
In case of intervention by an insurance company, the product becomes the property of the insurance company upon its
exclusive request. Else, it shall remain property of the user.
The guarantee covers exclusively the materials manufactured and provided by SEFRAM.
Any intervention by the user or any third party without prior authorization by the company voids the guarantee.
The user shall be responsible for the return of its appliance to our site. Hence, it shall provide for a conditioning that shall
correctly protect the appliance while shipping. It shall subscribe, at its own expenses, any insurance required for the transport.
The SEFRAM company reserves the right to refuse any product wrongly conditioned and not to take in charge any break
consecutive to the transport.
Particular case of the battery: There is a Li-ion battery as a standard equipment of this appliance. It shall not be transported
outside the appliance. In no case shall the user replace it. Its replacement in the factory is necessary to check the charge system
and the protective securities.
What to do in case of malfunction?
In case of malfunction or for any advice for use, please contact the technical support by SEFRAM Instruments & Systèmes:
0825 56 50 50 / 2
A technician shall answer you and give you any information required to solve your problem.
What to do in case of failure?
In case of failure of your appliance, please contact the technical support: 0825 56 50 50 / 2

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Some advice!
Some technical help!
SEFRAM Instruments & Systèmes commits itself to help you on the phone about the use of your appliance.
Please call or Technical Support:
Or e-mail:
[email protected]
We thank you for your trust.
METROLOGY
The meteorological conditions of your measurement instrument are defined in the specifications of this notice. Climate and
environmental conditions restrict the specifications of your Field Strength Measurer (MDC). SEFRAM checks the
characteristics of each appliance one by one on an automatic bench during its manufacture. The adjustment and control are
guaranteed under conditions of the ISO9001 certification by facilities in connection with the COFRAC (or equivalent in the
context of ILAC reciprocity).
The specified characteristics are considered stable for a period of 12 months from the first use under normal conditions of use.
We recommend a check after 12 months and max. 24 months of use, then every 12 months after 24 months.
For any check of the characteristics, the following average climate conditions shall be maintained (23°C+3°C –50(+20)%RH).
The MDC should have been working for 0,5 hour before check.
We recommend that you have this control made by our after-sales service (Service Après-Vente) for the best service and
preservation of the measuring quality of your instrument.
When a MDC returns to SEFRAM, maximum service is provided with internal updating according to the required adjustments
and software updates. In case of shift in the characteristics, your instrument shall be adjusted to recover its original
characteristics.
PACKAGING
The packaging of this product is fully recyclable. Its design allows the transport of your instrument under the best possible
conditions. Please note that the original packaging should be additionally wrapped in case of transport by air, road or postal.

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TABLE OF CONTENTS
1Important information........................................................................................................10
1.1 Particular precautions...................................................................................................................................10
1.2 Security instructions.....................................................................................................................................10
1.3 Symbols and definitions ...............................................................................................................................10
1.4 Conformity and restrictions of the appliance................................................................................................11
2Quick start-up.....................................................................................................................12
2.1 Presentation of the appliance.......................................................................................................................12
2.2 Signal spotting..............................................................................................................................................13
2.2.1 Checking a terrestrial antenna..............................................................................................................13
2.2.2 Installation of a terrestrial antenna........................................................................................................15
2.2.3 Installation of a satellite dish.................................................................................................................17
3Presentation .......................................................................................................................20
3.1 General.........................................................................................................................................................20
3.2 Description of the appliance.........................................................................................................................21
4Power-up.............................................................................................................................23
4.1 Battery..........................................................................................................................................................23
4.2 Loading of the battery...................................................................................................................................23
4.3 External power supply..................................................................................................................................24
4.4 Turning the appliance on and off..................................................................................................................24
5Man-machine interface......................................................................................................25
5.1 Content of the screen...................................................................................................................................25
5.2 Changing a name or a value........................................................................................................................27
5.2.1 Change inside a table ...........................................................................................................................27
5.2.2 Change with selection...........................................................................................................................28
5.2.3 Change with virtual keyboard................................................................................................................28
5.3 Lists of measurements and setup library .....................................................................................................29
6AUTOSET mode .................................................................................................................32
6.1 Terrestrial mode...........................................................................................................................................33
6.2 Satellite mode...............................................................................................................................................33
6.3 Cable mode..................................................................................................................................................34
6.4 «START » menu key....................................................................................................................................34
7Measurement lists..............................................................................................................36
7.1 The List page................................................................................................................................................36
7.2 Modification of a list......................................................................................................................................37
8Setup library.......................................................................................................................40
8.1 The Library page ..........................................................................................................................................40
8.2 Creation or modification of setups in the library...........................................................................................40
9Check Sat............................................................................................................................43
9.1 Updating satellites........................................................................................................................................44
9.2 Check Sat function.......................................................................................................................................45
9.3 Checking the aligned satellite ......................................................................................................................46

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9.4 Double Check Sat ........................................................................................................................................47
9.5 Alignment of the satellite dish ......................................................................................................................47
9.5.1 Electronic compass...............................................................................................................................48
9.5.2 Recall ....................................................................................................................................................49
10 The Measures-TV-Spectrum page ....................................................................................50
11 Measures ............................................................................................................................51
11.1 Autolock function ......................................................................................................................................51
11.2 Modification of parameters .......................................................................................................................52
11.3 Level measurements ................................................................................................................................53
11.4 Satellite band............................................................................................................................................53
11.5 Terrestrial band.........................................................................................................................................54
11.6 Thresholds................................................................................................................................................54
11.7 Digital measurements...............................................................................................................................55
11.8 DVB-T/H ...................................................................................................................................................56
11.9 DVB-T2 / T2 Lite.......................................................................................................................................57
11.10 DVB-C.......................................................................................................................................................58
11.11 DVB-C2.....................................................................................................................................................59
11.12 DVB-S and DSS .......................................................................................................................................60
11.13 DVB-S2.....................................................................................................................................................61
11.14 FM-RDS....................................................................................................................................................62
11.15 DAB/DAB+................................................................................................................................................63
12 Spectrum analyser.............................................................................................................64
12.1 Simplified Spectrum..................................................................................................................................64
12.2 Additional functions for satellite................................................................................................................65
12.3 LTE mode.................................................................................................................................................65
12.4 Fill mode ...................................................................................................................................................65
12.5 NIT/TV mode ............................................................................................................................................66
12.6 Expert spectrum........................................................................................................................................67
12.6.1 Mode key...............................................................................................................................................67
12.6.1.1 Display mode.................................................................................................................................67
12.6.1.2 Measures.......................................................................................................................................68
12.6.1.3 Frequency......................................................................................................................................69
12.6.1.4 Cursor............................................................................................................................................69
13 Image and Sound...............................................................................................................70
13.1 Digital TV..................................................................................................................................................70
13.2 Full screen mode......................................................................................................................................70
13.3 Audio.........................................................................................................................................................71
13.4 Table of services.......................................................................................................................................71
13.5 PID function ..............................................................................................................................................71
13.6 NIT function ..............................................................................................................................................72
13.7 ASI TS function.........................................................................................................................................72
13.8 Record function PVR................................................................................................................................73
13.9 Rights of access / Access card.................................................................................................................73
14 Remote power supply / LNB –DiSEqC ............................................................................74

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14.1 Terrestrial band.........................................................................................................................................74
14.2 Satellite band............................................................................................................................................75
14.2.1 Launching..............................................................................................................................................75
14.2.2 Switches................................................................................................................................................76
14.2.3 Positioner ..............................................................................................................................................77
14.2.4 DCSS ....................................................................................................................................................78
14.2.4.1 Influence of the DCSS on the spectrum analyzer..........................................................................80
15 Constellation ......................................................................................................................81
16 Echo / Guard interval.........................................................................................................82
17 Measurement map..............................................................................................................85
17.1 Values beyond tolerance..........................................................................................................................86
17.2 Graphics ...................................................................................................................................................87
18 MER/Carrier ........................................................................................................................89
19 Configuration .....................................................................................................................90
19.1 Language..................................................................................................................................................90
19.2 Expert mode .............................................................................................................................................90
19.3 Measurement unit.....................................................................................................................................91
19.4 Frequency map.........................................................................................................................................91
19.5 Saves........................................................................................................................................................91
19.5.1 View ......................................................................................................................................................92
19.5.2 Save......................................................................................................................................................93
19.5.3 Delete....................................................................................................................................................94
19.6 Adjustment................................................................................................................................................94
19.6.1 Beep......................................................................................................................................................94
19.6.2 Password ..............................................................................................................................................95
19.6.3 Background...........................................................................................................................................95
19.6.4 Active USB port.....................................................................................................................................96
19.6.5 Configuration.........................................................................................................................................96
19.6.6 Update...................................................................................................................................................97
19.7 LCD...........................................................................................................................................................98
19.8 Factory recovery.......................................................................................................................................98
20 Software update.................................................................................................................99
21 Save...................................................................................................................................100
22 Connection of the appliance to a PC..............................................................................101
22.1 Required configuration ...........................................................................................................................101
22.2 USB mini B interface...............................................................................................................................101
22.3 Ethernet interface ...................................................................................................................................102
23 Multistream capability .....................................................................................................104
24 GPS ...................................................................................................................................105
24.1 VIEW function.........................................................................................................................................105
24.2 LOG function...........................................................................................................................................106
24.3 CARTOGRAPHY function ......................................................................................................................106
24.3.1 Recording a file...................................................................................................................................108

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24.3.2 Export and cartography.......................................................................................................................109
25 Optical Power Measurement...........................................................................................111
26 WIFI ...................................................................................................................................112
27 HDMI Connection.............................................................................................................113
28 Displayed messages........................................................................................................114
28.1 Alert messages.......................................................................................................................................114
28.2 Error messages ......................................................................................................................................115
29 Maintenance .....................................................................................................................116
30 Technical specifications..................................................................................................118
30.1 Selection Guide ......................................................................................................................................118
30.2 Common technical specifications ...........................................................................................................119
30.3 Digital measurements.............................................................................................................................120
30.4 Divers......................................................................................................................................................122
30.5 General specifications ............................................................................................................................123
30.6 Accessories ............................................................................................................................................123
30.7 V, dBµV, dBmV et dBm conversion........................................................................................................124
30.8 Typical values for measurements...........................................................................................................124
31 CE Declaration .................................................................................................................125

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1 Important information
Please read carefully the following instructions before using your appliance.
1.1 Particular precautions
Do not use the product for any other use than specified.
Use the provided charger unit to prevent any deterioration of the appliance and guarantee its measurement
characteristics.
Do not use in a wet environment.
Do not use in an explosive environment.
In case of failure or for the maintenance of the appliance, only a qualified personal shall be entitled to work on
it. In such a case, it is required to use Sefram spare parts.
Do not open the appliance: risk of electric shock.
You should use the F/F or BNC/F adaptor provided with your measuring instrument. Any other adaptor could
damage your appliance and jeopardizes the guarantee.
Do not use gloves, stylus or any other object on to the touchscreen. Handle the screen carefully.
1.2 Security instructions
For a correct use of the appliance, it is necessary that users abide by the security and use instructions
described in this manual.
Specific warnings appear all along this manual.
In case of need, warning symbols are displayed on the appliance:
1.3 Symbols and definitions
Symbols in this manual:
Remark: Shows important information
Key or press zone
Window or display zone showing up after the operation achieved

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Symbols on the appliance:
Attention: Refer to the manual. Shows a risk of damage for the material connected to the
instrument or to the instrument itself.
Ground: Grounded accessible parts.
Product for recycling.
1.4 Conformity and restrictions of the appliance
See chapter EC Declaration of conformity.

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2 Quick start-up
2.1 Presentation of the appliance
Important keys:
787X is an appliance with a capacitive touchscreen. This requires a soft handling. No glove and no stylus
should be used, so that the triggering should be taken into account.
You will recognize the « keys » by their dark grey color (example: the home key: )
You may also access tables by pressing lines (on white or yellow)
The Measurements/TV/Spectrum page is divided in four zones (TV with current service, Spectrum and
Measurements). Pressing a zone displays this zone « full screen » or a selection among the services of the
displayed channel.
Welcoming page:
HOME
Access to the main menu
SAVE
Access to the current page Save
LNB DiSEqC
Access to the adjustment page of remote
power supply feature
Measures-TV-Spectrum
Access to the TV page
Press button ON/OFF
RF connector for use with a
BNC/F or F/F adaptor provided
with the appliance.
Pour brancher le signal à analyser

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Attention: To exit a window like in this example below, press the key:
2.2 Signal spotting
The 787X allows spotting signals in ground or very quick satellite mode.
In the following chapter, we will see how to spot a signal on three types of installation:
Checking of a terrestrial antenna (the installation has already been made).
Installation of a terrestrial antenna.
Installation of a satellite dish.
2.2.1 Checking a terrestrial antenna
In this case, the Autoset function allows a scan of the channels that the antenna detects.
Plug the cable of your antenna to the 787X (take care to use an adequate adaptor)
Turn your appliance on. Press the Home key
The Home page appears on screen. Press Autoset
On this page, press Mode, Terrestrial, then select DVB-T and 8MHz (as here below)
The scan should range from the E2 to the E69 channels, frequency range Europe (you may reduce the
number of channels to scan if you know the range of the emitter where the antenna points at: the scan will
be faster)

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Press START. The appliance searches until the end of the scan and turns directly to the Measurement plan
mode. If channels were found, the appliance makes measurements continuously (C/N-level, then BER/MER)
on the detected channels. If no channel has been found, see the next chapter.
Eventually, press the TV measurement key. On this new page, press Prog, select the channel that you want
to display.
Check the level, the BER/MER, the TV detection and the spectrum of the signal on this page…

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2.2.2 Installation of a terrestrial antenna
Plug the cable of your antenna to the 787X (take care to use an adequate adaptor)
Turn your appliance on. Press the Measures-TV-Spectrum key
Press the Spectrum zone
Access to terrestrial mode if needed
Access to full SPAN mode
Adjust the antenna to get the most powerful signal possible

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Press directly the signal you want in the spectrum (the cursor moves to where you press)
Press the NIT/TV key , the device find automatically all the parameters of the signal.
Once the search ended, the device display TV picture, TV name, “Network Name” and “Network ID”.
Press the Measures-TV-Spectrum key. You can now display the level, the BER/MER, the TV detection (with
information about the current service) and the spectrum of the signal selected on the same page…

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2.2.3 Installation of a satellite dish
Connect the satellite dish to the appliance.
Activate the remote power supply
To access to the Remote power supply page, press
To launch the remote power supply en route, press then select ON in the page to
launch the remote power supply:
A green check appears in front of what you validated
Press and to access the Check Sat mode
(the appliance already includes a list of satellites).
Select a satellite like in the example below (here Astra1):

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Slowly orientate the satellite dish until hearing the locking melody and getting the best quality
No found transponder → red smiley
Average reception quality (< 50%) → orange smiley
Good reception quality (> 50%) → green smiley
Reminder: transponder = satellite channel
To check if the aimed satellite is the right one: press the NIT key
The appliance searches the MPEG NIT table on one of the 4 transponders and displays the name of the
satellite:
Attention: The displayed name depends on the content of the MPEG NIT table.
Some distributors provide no (or poor) such table.
The displayed information may be wrong.

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Attention:
To identify a satellite, you must be « hooked » on all 4 transponders. (Quality > 0)
However, some transponders are regularly modified. See the frequency range of the
satellite when a transponder does not seem to work.
Some switches or LNB work only with DiSEqC commands. In this case, position the
band (OL) and the polarization on DiSEqC at the Configuration page LNB-DiSEqC.
(Attention: the Check Sat is slower when using the DISEqC command).
For any additional information, our technical support is at your disposal:
E-mail: [e-mail]

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3 Presentation
3.1 General
The field strength measurers 787X are handy appliances designed for the installation and maintenance of
any broadcasting and reception installations of analogical and digital terrestrial television channels, satellites
or cable networks.
The band ranges between 5 MHz and 2200 MHz; this allows accurate measurements on all analogical
television standards, FM carrier waves and the various digital standards DVB-C/C2, DVB-T/T2/T2Lite,
DAB/DAB+, DVB-S/S2, DSS.
They do Level measurements in average, peak and power according to the selected standard.
In Measurement Plan mode, they scan up to 50 setups at the same time and compare them to decision
levels (min / max).
Equipped with an efficient Bit Error Rate measurement (various BER, MER), they allow the full validation of
digital transmissions DVB-T/T2/T2Lite, DVB-C/C2, DAB/DAB+, DVB-S/S2 and DSS.
Providing a Constellation diagram for digital standards, the detection and display of Echoes and pre-
echoes and the display of MER per carrier in DVB-T/T2/T2Lite and DVB-C2 to have a complete analysis of
the digital signals.
The Expert Spectrum analysis, quick and accurate, allows the display of the disturbances and the
measurement of C/N, power...
You can display the digital terrestrial or satellite TV under SD or HD.
The Measures-TV-Spectrum mode allows the simultaneous display of the spectrum measurement and of the
video of the one same signal.
A HDMI socket allows the transmission from HD video to TV.
You can hear digital sound through integrated loudspeakers.
Designed for use on field, they are compact (less than 3 kg, battery included), autonomous (battery pack and
quick charger), equipped with a LCD 10’’ touchscreen (capacitive).
The high memory content allows the storage of many configurations, measurements and spectrum curves.
Each appliance is fully remote-controlled through USB and ETHERNET connections via a computer.
Attention : 7871 - 7872 - 7875 - 7876
Consult the Selection Guide to know the possibilities of your device.