Ascent ACT AT5026 DMOD User manual

ACT AT5026
DMOD
Transmitter
FTTX Solution
Quick Reference
Guide
Revision C

AT5026 DMOD Transmitter
Solutions Provider for FTTx, RFoG and HFC www. ascentcomtec.com
Page 2 of 19
ACT AT5026 DMOD Transmitter FTTX Solution
Quick Reference Guide
ACT Document Number: ACT AT5026 DMOD SAT TX Series QRG
Quick Reference Guide Revision C
Copyright © 2017 Ascent Communication Technology Limited.
All rights reserved. Reproduction in any manner whatsoever without the express written permission of Ascent
Communication Technology is strictly forbidden.
This document is produced to assist professional and properly trained personnel with installation and maintenance
issues for the product. The capabilities, system requirements and/or compatibility with third-party products
described herein are subject to change without notice.
For more information, contact ACT: [e-mail]
Revision History
Revision Date Reason for Change
A 04/12/2016 Initial release
B 04/04/2017 Updated specifications
C 04/11/2017 Added WEB manager

AT5026 DMOD Transmitter
Solutions Provider for FTTx, RFoG and HFC www. ascentcomtec.com
Page 3 of 19
Table of Contents
1 Product Description ............................................................................................................... 4
2 Features.................................................................................................................................. 4
3 Specifications ......................................................................................................................... 5
4 Diagram.................................................................................................................................. 6
5 Panel Guide ............................................................................................................................ 6
5.1 Front Panel ····················································································································· 6
5.2 Rear panel ······················································································································ 7
6 WEB Manager ........................................................................................................................ 8
7 Setup Menu.......................................................................................................................... 14
8 Common Problem Solution.................................................................................................. 18

AT5026 DMOD Transmitter
Solutions Provider for FTTx, RFoG and HFC www. ascentcomtec.com
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Optical Transmitter adopts high-linearity butterfly DFB laser which is directly modulated to
transmit 47 MHz to 862 MHz and 960 MHz to 2600 MHz signal in a single fiber
Optical Transmitter can choose ITU standard wavelength for DWDM system to extend and
update the networks. It can be amplified by EDFA and EYDFA for huge FTTH system. It can be
Compatible with any FTTX PON technology to realize the combination of CATV, DVB-S ,
Internet and FTTH.
Optical Transmitter adopts 19” standard rack, the parameters of the machine is controlled by
micro-processor, and the status and fault alarm are displayed by the LCD in the front panel.
Standard RJ 45 supports SNMP management. The built-in laser APC, ATC control circuit
assures the long life of the laser and reliable work.
SAT-IF adopts high-linearity IF driving circuit with AGC to ensure the high quality transmission
of Analog TV, Digital TV (DBS-C, DBS-T and Satellite TV in a single fiber
1. Adopt low noise imported DFB laser.
2. Superior pre-distortion circuit design, in achieving high standards of CNR value, there are still
perfect CTB and CSO performance value.
3. Intelligent fan, it began to run when the chassis temperature reaches the set 32 °C to 35 °C.
4. AGC control, so that different RF input level can still maintain a considerable output performance.
5. VFD or LED display, with laser monitoring, digital display, fault alarm, network management and
other functions; once the laser operating parameters deviate from the software set the allowable
range, will alert.
6. With standard RS232 interface for local network management and monitoring of computers.
7. With standard RJ45 interface support SNMP for remote monitoring.
8. High-quality switching power supply, can be 90 VAC to 265VAC or -48 VDC work.
9. Single input with frequency 47 MHz to 2600 MHz.
10. CATV and SAT-IF signal can be transmitted in a single fiber
11. It can be amplified by EDFA and EYDFA, compatible with any FTTX PON technology

AT5026 DMOD Transmitter
Solutions Provider for FTTx, RFoG and HFC www. ascentcomtec.com
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Items
Technical Parameters
Unit Remarks
Min
Typical
Max
Optical Parameters
Working Wavelength
1300
1310
1320
nm
Chosen by customer
1540
1550
1563
nm
Chosen by customer
Output Power
8
30
mW
1310nm
4
10
mW
1550nm
Optical Isolation
30
dB
Optical Return Loss
50
dB
Fiber Connector
FC/APC, SC/APC
Chosen by customer
CATV RF Parameters
Bandwidth
47
862
MHz
Input Range
75
85
dBµV
Flatness
-0.75
+0.75
dB
47 MHz to 862 MHz
C/N
51
dB
Test standard GT/T 184-2002
C/CTB
63
dB
C/CSO
58
dB
Input Return Loss
16
dB
RF Port
F Imperial
Input Impedance
75
Ω
SAT-IF Parameters
Working Bandwidth
5
2600
MHz
Input Range
-25
-5
dBm
Flatness
-1
+1
dB
950 MHz to 2600 MHz
Input Return Loss
10
dB
RF Port
Imperial
Input Impedance
75
Ω
Tuner Feeding Vol
0/13/18
V
Tuner Feeding Cur
300
mA
General Parameters
Power Supply Voltage
A: 160 V
AC
to 250 V
AC
(50 Hz)
B: 48 VDC
Power Consumption
30
W
Working Temp
0
50
°C
Max. Working Humidity
5
95
%
Storage Temp Range
-40
60
°C
Dimensions
1U 19”
483 × 395 × 44
mm
Net weight
5
kg

AT5026 DMOD Transmitter
Solutions Provider for FTTx, RFoG and HFC www. ascentcomtec.com
Page 6 of 19
RF IN
45MHz~2600MHz
Cooling/Heating
Control
Power Stability
Control
Output
CPU
Display Front Panel
Control Status Alarm Rs232 Rj45
Laser
ATT/AGC
PA PA
AGC
+13V+18V 0V
1. VFD/LED display
Display satellite optical transmitter parameter, such as model number and work situation
2. Status indicator
The green light indicates normal and the red light is abnormal
3. Laser indicator
The green light indicates normal and the red light is abnormal
4. RF indicator
The green light indicates normal, and the red light indicates that the RF input is too low or too high
5. Power indicator
The green light indicates two ways switch power supply working, the yellow light indicates one-
way power supply working, the red light indicates abnormal

AT5026 DMOD Transmitter
Solutions Provider for FTTx, RFoG and HFC www. ascentcomtec.com
Page 7 of 19
1. Fan
Intelligent fan, it began to run when the chassis temperature reaches the set 32 to 35 °C.
2. OPT OUT
Optical signal output.
3. RF IN
RF input
4. RS232
For local computer network management.
5. RJ45
Compliant with SNMP standard interface.
6. Power supply switch
ON: Open up means 12VDC, open down means 18VDC, in middle means turn off.
7. Power outlet
You can choose 90 VAC to 265 VAC or -48 VDC

AT5026 DMOD Transmitter
Solutions Provider for FTTx, RFoG and HFC www. ascentcomtec.com
Page 8 of 19
The user can use a web browser to check the working conditions and basic parameters of the
amplifier. The amplifier supports IE, Chrome, Firefox, Opera and other web browsers. The
following examples are based on Opera browser.
1. Find the IP add in the machine, normally it is 192.168.0.22, set the IP address of the PC in
the same range as the following images:

AT5026 DMOD Transmitter
Solutions Provider for FTTx, RFoG and HFC www. ascentcomtec.com
Page 9 of 19

AT5026 DMOD Transmitter
Solutions Provider for FTTx, RFoG and HFC www. ascentcomtec.com
Page 10 of 19
2. Open a web browser, input the IP address, For example: 192.168.0.22

AT5026 DMOD Transmitter
Solutions Provider for FTTx, RFoG and HFC www. ascentcomtec.com
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Log in to the page.
Default username and password:
Username: admin
Password: ascent

AT5026 DMOD Transmitter
Solutions Provider for FTTx, RFoG and HFC www. ascentcomtec.com
Page 12 of 19

AT5026 DMOD Transmitter
Solutions Provider for FTTx, RFoG and HFC www. ascentcomtec.com
Page 13 of 19

AT5026 DMOD Transmitter
Solutions Provider for FTTx, RFoG and HFC www. ascentcomtec.com
Page 14 of 19
The following menu shows all using the down arrow button; the up arrow button can be
reversed.

AT5026 DMOD Transmitter
Solutions Provider for FTTx, RFoG and HFC www. ascentcomtec.com
Page 15 of 19

AT5026 DMOD Transmitter
Solutions Provider for FTTx, RFoG and HFC www. ascentcomtec.com
Page 16 of 19

AT5026 DMOD Transmitter
Solutions Provider for FTTx, RFoG and HFC www. ascentcomtec.com
Page 17 of 19

AT5026 DMOD Transmitter
Solutions Provider for FTTx, RFoG and HFC www. ascentcomtec.com
Page 18 of 19
If LED displays the right optical power, but not enough by test meter
Reason:
1. the optical meter is not very correct
2. the input optical power is out of the requested value( -3 dB to 10 dB)
3. too big loss in the test pigtail
4. There is dust in the connectors
Solution:
Use absolute alcohol to wash the all the connects and the test point of optical meter

AT5026 DMOD Transmitter
Solutions Provider for FTTx, RFoG and HFC www. ascentcomtec.com
Page 19 of 19
Ascent Communication Technology Ltd
AUSTRALIA
HONG KONG SAR
140 William Street, Melbourne
Unit 9, 12th Floor, Wing Tuck Commercial Centre
Victoria 3000, AUSTRALIA
177 Wing Lok Street, Sheung Wan, HONG KONG
Phone: [phone]
Phone: [phone]
CHINA
USA
Unit 1907, 600 Luban Road
2710 Thomes Ave, Cheyenne
200023, Shanghai CHINA
WY 82001, USA
Phone: [phone]
Phone: [phone]
EUROPE
VIETNAM
Pfarrer-Bensheimer-Strasse 7a
15 /F TTC Building, Duy Tan Street, Cau Giay Dist.
55129 Mainz, GERMANY
Hanoi, VIETNAM
Phone: [phone]
Phone: [phone]
WEB: www.ascentcomtec.com EMAIL: [e-mail]
Specifications and product availability are subject to change without notice.
Copyright © 2017 Ascent Communication Technology Limited. All rights reserved.
Ver. ACT_1RU_5026_DMOD_SAT_TX_QRG_V1c_Apr_2017