Deviser DS2400T User manual

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© Tianjin Deviser Electronics Instrument Co., Ltd.
Deviser Part No.: 2400T2-DL
All rights reserved.
Printed in CHINA. Dec. 2012.

I
Warranty
The instrument is warranted for 12 months under
normal operating conditions (except batteries and
LCD). Users should read manual carefully before first
use and operate correctly according to the manual.
Deviser shall have no responsibility for any defect or
damage caused by improper use and maintenance or
for any product which has been repaired or altered by
any one others not DEVISER or our authorized service
center.
When the meter need to be repaired or calibrated,
Please contact Deviser or our local distributors in your
territory.

II
Index
1. General Introduction.................................................1
1.1 Channel Measurement.........................................3
1.2 Constellation Diagram ..........................................3
1.3 Tilt/Level List........................................................3
1.4 Hum Measurement ..............................................4
1.5 Channel Scanning.................................................4
1.6 Spectrum Scanning ..............................................4
1.7 Limit Measurement..............................................4
1.8 Voltage Measurement..........................................5
1.9 Multiple User Channel..........................................5
1.10 File Management...............................................5
1.11 Intelligent Power Management ..........................5
1.12 DVB-C channel measurement.............................6
1.13 BER Statistics......................................................6
1.14 DVB-T2 channel measurement...........................7
2. Introduction..............................................................8
2.1 Appearance..........................................................8
2.2 Keypad .................................................................9
2.3 Display Description.............................................11
3. Using the Instrument...............................................12
3.1 Function Menu Display.......................................12
3.2 Learn User Channel Plan.....................................14
3.3 Level Measurement............................................18

III
3.4 Constellation Diagram ........................................30
3.5 BER Statistics Measurement...............................36
3.6 Spectrum Scanning ............................................39
3.7 Tilt/Level List Measurement...............................45
3.8 Channel Scanning...............................................50
3.9 HUM Measurement ...........................................54
3.10 Limit Measurement..........................................56
3.11 Return Path Spectrum ......................................61
3.12 File Management.............................................62
4. Setup ..................................................................... 71
4.1 Brief Introduction.............................................. 71
4.2 INFORMATION ...................................................73
4.3 GENERAL............................................................74
4.4 Measurement Parameter Setup .........................82
4.5 Channel Plan ......................................................92
5. Power Supply ..........................................................96
5.1 Battery ...............................................................96
5.2 Charging.............................................................97
6. Port.........................................................................98
7. Specification............................................................99
8. Standard Accessories.............................................104

DS2400T DVB-T2 Signal Analysis Meter Operation Manual
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1. General Introduction
DS2400T is an ideal meter for DVB-T/T2 and DVB-C
signals testing, which is a new model with color screen
and high performance. It demodulates and accurately
measure the COFDM signals carried through the
terrestrial TV system. Also it supports main function of
CATV system measurement, including digital TV and
analog TV. This model can measure and display most
indexes of Digital TV (Channel Power, MER, BER,
Constellation Diagram); Analog TV(Single-frequency
Level, Carrier Level of Full Channels Spectrum, HUM).
Also DS2400T can measure Frequency Spectrum
Scanning, Trunk Voltage and Battery Voltage.
DS2400T has RS-232 port for communicating with PC
software – TOOLBOX which can manage and analyze
the testing result file.
Configuration:
DS2400T
Standard
DVB-T
Option
DVB-C
DVB-T2

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Features:
* QAM and QPSK Test
* Level Test
* Constellation Diagram
* Channel Scanning
* Spectrum Scanning
* Tilt Test
* Limit Test
* HUM
* Voltage Measurement
* Multiple User Channel Plan Setup
* File Management
* Multi languages support
* BER Statistics (Optional)

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Basic Functions Overview
1.1 Channel Measurement
DS2400T supports accurate signal level test in
analogue TV, DVB-T/T2 signals and single frequency
modes.
For Analogue channels, you can get video level, audio
level and △V/A etc.
For DVB-T channels, DS2400T supports modulation
modes of QAM and QPSK. Here, you can get Channel
Power, MER and BER and Constellation Diagram.
NOTE: For DVB-T channels, MER and BER test is only in
QPSK and QAM (16/64QAM) Modulation Mode.
1.2 Constellation Diagram
For DVB-T channels, Constellation diagram function
supports modulation modes of 16QAM, 64QAM and
QPSK. Here, you can get Channel Power, MER, CBER,
VBER, CARRIER and Constellation diagram.
1.3 Tilt/Level List
Tilt/Level list test is the effective solution to check the
flatness and amplitude, and DS2400T support 12

DS2400T DVB-T2 Signal Analysis Meter Operation Manual
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channels tilt max.
1.4 Hum Measurement
HUM is also named as power supply hum modulation
distortion, which comes from the low-frequency
interference of power supply.
1.5 Channel Scanning
DS2400T supports video and audio level display of all
channels, which could up to 160 channels most. Also 5
steps zoom in/out and marker function make your
observation easier.
1.6 Spectrum Scanning
DS2400T has spectrum function which provides several
spans, and two sample modes (AVG and PEAK).In
order to detect and know the interference, it has
peak-hold function which shows the difference
between peak spectrum and current spectrum by
marker and double-marker function.
1.7 Limit Measurement
DS2400T can fast check the cable system by the limit
test function. Each enabled channel will be tested
according to the limits setup by user, and after the

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testing, pass/fail indicator can be viewed.
1.8 Voltage Measurement
DS2400T can measure battery voltage, trunk voltage
and identify AC or DC automatically of the cable
system.
1.9 Multiple User Channel
DS2400T can create five user channel plans max, which
contains digital channels or analog channels or mixed
channels. Also they can be switched easily. So it is very
suitable for multi-network maintenance.
1.10 File Management
DS2400T can store the results of channel level test,
constellation test, tilt test, channel scanning, spectrum
scanning and HUM test for analogue TV channel. User
can manage and analyze these files via meter or PC.
1.11 Intelligent Power Management
DS2400T with full charged is able to work over 5 hours.
The power supply monitoring system will monitor the
status of power and ensure the instrument in power
saving mode.

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NOTE: Charge the battery before first use. Refer to 5.2
DVB-C Optional Functions Overview
Note: The DVB-C option includes DVB-C signal test and
BER Statistics functions. These two functions will not
be installed on DS2400T as default. In order to use
them, you have to contact DEVISER to order DVB-C
option.
1.12 DVB-C Channel Measurement
DS2400T supports accurate signal level test in DVB-C
signals mode.
For DVB-C channels, DS2400T supports modulation
mode of QAM. Here, you can get Channel Power, MER
and BER and Constellation Diagram.
NOTE: For DVB-C channels, MER and BER test is only in
QAM (16/32/64/128/256QAM) Modulation Mode.
1.13 BER Statistics
For DVB-C channels, you can get MER, BER, ES, SES,
COR, UNCOR and etc…

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DVB-T2 Optional Functions Overview
Note: The DVB-T2 option includes DVB-T2 signal test
function. This function will not be installed on DS2400T
as default. In order to use that, you have to contact
DEVISER to order DVB-T2 option.
1.14 DVB-T2 Channel Measurement
DS2400T supports accurate signal level test in DVB-T2
signals mode.
For DVB-T2 channels, DS2400T supports modulation
mode of QAM. Here, you can get Channel Power, MER
and BER and Constellation Diagram.

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2. Introduction
2.1 Appearance
Get acquainted with the appearance before use：
Serial
Port
RF Interface
LCD
Keyboard
Charge Status
POWER
Charge
Interface

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2.2 Keypad
2.2.1 Soft Keys
There are three soft keys ( , and )
located under the screen. They are used to access the
functions represented by the icons displayed on the
bottom of screen.
2.2.2 Shortcut Keys
There are three keys below the three soft keys
including , , .
Press key can directly back to menu screen.
and key is used as different functions in
different screen.
2.2.3 Character/Digit Input
Entering Numeric Values:
Within several displays, you must enter numeric values.
Here, press the number buttons to enter the desired
value directly. Then press ENTER ( ) key to enter
the value into the DS2400T.

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Entering Alphanumeric Characters:
Similarly, you must enter alphanumeric data on several
screens, such as file names, Channel labels and the
password of DVB-C option. As before, you press the
buttons to enter the desired value directly. When you
press a button, the first entry is the number associated
with the button, after which you press the same
button repeatedly to scroll through the letters
associated with the button. To enter a second letter or
number using a different button, you can go directly to
the second button for entry. If you want to enter a
second letter or number using the same button as the
preceding character, you must press the key to
shift the DS2400T control to a new number or letter.
NOTE: If you make an error when entering a number
or a name, you can press BACK ( ) key to go back
and then re-enter it. Press ESC ( ) key to escape
from the operation.

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2.3 Display Description

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3. Using the Instrument
3.1 Function Menu Display
Figure3-1-1
The Figure 3-1-1 Display the Main Menu which include all
of the function icons.
Soft Keys:
: Enter the selected shortcut interface.
: Switch the selected shortcut on the left
direction circularly.
: Switch the selected shortcut on the right
direction circularly.

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Function keys:
: Switch the selected shortcut on the up direction
circularly.
: Switch the selected shortcut on the down
direction circularly.
The selected shortcut will displays in highlight.

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3.2 Learn User Channel Plan
In order to enhance your work efficiency, please create
user channel plan before measurement. DS2400T will
choose all effective channels in the cable system
automatically and save in this channel plan.
The User Channel Plan includes three elements as
follows:
* Channel number
* Channel format (TV, DIGI)
* Carriers frequency (video and audio)
The following is the step of setup user channel plan.
1．Connect the instrument with the cable system or
signal receiving antenna.
2．Press return to main menu, and select the
Setup shortcut like Figure3-2-1, then press
into Setup Menu.