Ascent AON2200C User manual

AON2200C
Outdoor
Optical Node
Quick Reference
Guide
Revision B

AON2200C Outdoor Optical Node
Solutions Provider for FTTx, RFoG, and HFC
www.ascentcomtec.com
Page 2 of 14
ACT AON2200C Outdoor Optical Node
Quick Reference Guide
ACT Document Number: ACT 2200C Optical Node QRG
Quick Reference Guide Revision B
Copyright © 2018 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
11/01/2018
Initial release
B
11/4/2018
Updated picture

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Table of Contents
1 Product Summary .................................................................................................................. 4
2 Performance Characteristics .................................................................................................. 4
3 Technical Specifications.......................................................................................................... 4
3.1 Link Testing Conditions ·································································································· 4
3.2 Performance Parameters ······························································································· 5
4 Block Diagram ........................................................................................................................ 6
5 Relation Table of Input Optical Power and CNR..................................................................... 7
6 Function Display and Operating Instructions......................................................................... 8
7 Structure Diagram.................................................................................................................. 9
8 NMS Setup Instructions ....................................................................................................... 11
9 Common Failure Analysis and Troubleshooting................................................................... 12
10 Optical Fiber Active Connector Cleaning & Maintenance ................................................. 13

AON2200C Outdoor Optical Node
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Ascent’s AON2212C outdoor optical node can be configured 2 forward path optical receiver
modules, 2 return path optical transmitter modules, 1 Ethernet transponder module and 2
switching power supply modules at most. Adopts advanced optical AGC technology, the
output level and output slope both adopt the electric control circuit. Add LED nixie tube
display function, the forward path output signal ≥116 dBμV.
 Forward path optical receiving part adopts advanced optical AGC technology, the input optical
power range extended to -8 to +2dBm.
 Forward path optical receiving part: RF operating bandwidth extended to 1GHz, each way
maximum output level up to 116dBμv.
 Full electric adjust attenuation and equilibrium control circuit, and achieve remote operation by
NMS.
 RF amplifier part adopts quick plug modular design, can quickly replace RF amplifier module
without dismantling the RF cable connector.
 Built-in perfect condition monitoring circuit, and support Ethernet transponder.
 Reserved C-CMTS forward path and return path RF interface, support DOCSIS EOC networking
scheme.
The performance parameters of this manual according to the measuring method of GY/T 194-
2003 < Specifications and methods of measurement on optical node used in CATV systems >,
and tested in the following conditions.
1. Forward optical receive part: with 10km standard optical fiber, passive optical attenuator and
standard optical transmitter composed the testing link. Set 59 PAL-D analog TV channel signal at
range of 45/87MHz to 550MHz under the specified link loss. Transmit digital modulation signal at
range of 550MHz to 862/1003MHz, the digital modulation signal level (in 8 MHz bandwidth) is
10dB lower than analog signal carrier level. When the input optical power of optical receiver is -
1dBm, the RF output level is 108dBμV, with 8dB output slope, measure the C/CTB, C/CSO and
C/N.
2. Return optical transmit part: Link flatness and NPR dynamic range are the link indexes which is
composed of return path optical transmitter and optical receiver.
Note
When the rated output level is the system full configuration and the receiving optical power is -
1dBm, equipment meets the maximum output level of link index. When the system configuration
degrades (that is, the actual transmission channels reduce), the output level of equipment will be
increased.

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Friendly Notice: Suggest you setting the RF signal to 6 to 9dB slope output in the practical
engineering application to improve the nonlinear index of the cable system.
Item
Unit
Description
Forward Optical Receive Part
Optical Parameters
Optical AGC Control Range
dBm
-8 to +2
Optical Return Loss
dB
>45
Optical Receiving Wavelength
nm
1100 to 1600
Optical Connector Type
—
FC/APC, SC/APC or specified by the user
Optical Fiber Type
—
Single mode
Link Performance
C/N
dB
≥ 51
-1dBm optical input, output
level 108 dBμV, EQ 8 dB
C/CTB
dB
≥ 65
C/CSO
dB
≥ 60
RF Parameters
Frequency Range
MHz
45/87 MHz to 862/1003 MHz
Flatness in Band
dB
±0.75
Rated Output Level
dBμV
≥ 110
Max Output Level
dBμV
≥ 116
Output Return Loss
dB
(85 MHz to 550 MHz) ≥16 / (550 MHz to 1000 MHz) ≥14
Redundant Receiver Isolation
dB
≥75
Output Impedance
Ω
75
Electrical Control EQ Range
dB
0 to 15 (1 dB stepping)
Electrical Control ATT Range
dB
0 to 20 (1 dB stepping)
Reverse Optical Transmit Part
Optical Parameters
Optical Transmit Wavelength
nm
1310±10, 1550±10 or specified by the user
Laser Type
—
DFB or FP laser
Output Optical Power
mW
1
Optical Connector Type
—
FC/APC, SC/APC or specified by the user
RF Parameters
Frequency Range
MHz
5 to 65 (or specified by the user)
Flatness in Band
dB
±0.75
Input Level
dBμV
72 to 85
Input Return Loss
dB
≥16
Independent Transmitter Isolation
dB
≥60
Input Impedance
Ω
75
NPR Dynamic Range
dB
≥15 (NPR≥30 dB)
Use DFB laser
≥10 (NPR≥30 dB)
Use FP laser

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RF Parameters of C-CMTS Interface
CMTS_DS
Level of Forward Path Insert Port
dBμV
≥102
CMTS_US
Gain of Return Path Output Port
dB
1±1
Port to CMTS_US output
Isolation of Forward Path to CMTS_US
Return Path Output Port
dB
≥70
General Performance
Power Voltage
V
A: AC (150 to 265) V
B: AC (35 to 90) V
Feed Current Through
A
10
Operating Temperature
°C
-40 to +60
Storage Temperature
°C
-40 to +70
Relative Humidity
%
0 % to 95 % (non-condensing)
Consumption
VA
≤ 65
Dimensions (L×W×H)
mm
360 × 330 × 161

AON2200C Outdoor Optical Node
Solutions Provider for FTTx, RFoG, and HFC
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AON2200C Outdoor Optical Node
Solutions Provider for FTTx, RFoG, and HFC
www.ascentcomtec.com
Page 8 of 14

AON2200C Outdoor Optical Node
Solutions Provider for FTTx, RFoG, and HFC
www.ascentcomtec.com
Page 9 of 14

AON2200C Outdoor Optical Node
Solutions Provider for FTTx, RFoG, and HFC
www.ascentcomtec.com
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1. Optical fiber in
2. Forward path optical receiver
modules1
3. Forward path optical receiver
modules2
4. Nixie tube display screen
5. Up key
6. Down key
7. Enter key
8. Return path optical transmit
modules1
9. CMTS return path output
10. Return path optical transmit
modules2
11. Return path component
12. AC60V independent feed port
13. Fixed screw
14. NM interface
15. Main board power input
16. Com ATT inserter of return path
port3, port4
17. EOC com insertion port of port3,
port4
18. Fixed screw
19. CMTS_US interface (used when
CMTS forward path and return path
mixed input)
20. CMTS forward path and return
path mixed input port
21. CMTS_DS input ATT inserter
22. Com ATT inserter of return path
port1, port2
23. Fixed screw
24. EOC mixed insertion port of
port1, port2
25. Port1 return path input EQ
inserter
26. Port1 EOC insertion port
27. Port1 return path input test port
(-20dB)
28. Port1 input ATT inserter
(-E type)
29. Port2 return path input EQ
inserter
30. Fixed screw
31. Port1 forward path output test
port (-20dB)
32. PORT1
33. Port1 feed fuse
34. Port2 EOC insertion port
35. Port2 forward path output test
port (-20dB)
36. Port2 feed fuse
37. Port2
38. Port2 input ATT inserter (-E type)
39. Port2 return path input test port
(-20dB)
40. Port3 forward path output test
port (-20dB)
41. Port3
42. Port3 feed fuse
43. Port3 input ATT inserter
(-E type)
44. Port3 return path input test port
(-20dB)
45. Port4 forward path output test
port (-20dB)
46. Port3 EOC insertion port
47. Port4
48. Port4 feed fuse
49. Port3 return path input EQ
inserter
50. Fixed screw
51. Port4 input ATT inserter (-E type)
52. Port4 return path input test port
(-20dB)
53. Port4 EOC insertion port
54. Port4 return path input EQ
inserter
55. Power module 2 socket
56. Power module 1 socket
57. 220Vac input socket
58. Power module 2 220Vac socket
59. Power module 1 220Vac socket
60. Power module 1
61. Power module 2
62. NMS transponder module
63. Network cable in
64. CMTS_DS input or CMTS mixed
input
65. CMTS_US input
66. CMTS_DS input or CMTS mixed
input
67. CMTS_US input

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If users configured the network management responder, need to do the following settings:
Responder IP setup instruction:
Network management directly modify:
1. Default IP is 192.168.1.168, default gateway is 192.168.1.1, default subnet mask is 255.255.255.0
2. Connect the computer and responder (can be direct connected), and change the computer IP to
192.168.1.XXX (XXX is any number from 0 to 255 except 168); start upper computer network
management software, then search the device and log in.
3. Right-click device icon and choose modify the device IP.
4. Enter new IP address, gateway and subnet mask.
5. Click modify, then exit, it is done. There will show new IP address and gateway on operational
logbook.
6. Reboot the responder, the new IP take effect (Click the reboot button in the network
management software or power on again)

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Failure Phenomenon
Failure Cause
Solution
After connecting the
network, the image of the
optical contact point has
obvious netlike curve or
large particles highlights but
the image background is
clean.
1. The optical input power of the
optical receiver is too high, make the
output level of the optical receiver
module too high and RF signal index
deteriorate.
2. The RF signal (input the optical
transmitter) index is poor.
1. Check the optical input power and make
appropriate adjustments to make it in the
specified range; or adjust the attenuation of
optical receiver to reduce the output level and
improve index.
2. Check the front-end machine room optical
transmitter RF signal index and make appropriate
adjustments.
After connecting the
network, the image of the
optical contact point has
obvious noises.
1. The optical input power of the
optical receiver is not high enough,
results in the decrease of C/N.
2. The optical fiber connector or
adapter of the optical receiver has
been polluted.
3. The RF input signal level of the
optical transmitter is too low, make
the modulation degree of the laser is
not enough.
4. The C/N index of system link signal
is too low.
1. Check the received optical power of the optical
contact point and make appropriate adjustments
to make it in the specified range.
2. Improve the optical received power of the
optical contact point by cleaning the optical fiber
connector or adapter etc. methods. Specific
operation methods see “Clean and maintenance
method of the optical fiber connector”.
3. Check the RF input signal level of the optical
transmitter and adjust to the required input
range. (When the input channels number less
than 15, should be higher than the nominal
value.)
4. Use a spectrum analyzer to check the system
link C/N and make appropriate adjustments.
Make sure the system link signal C/N﹥51dB.
After connecting the
network, the images of
several optical contact
points randomly appear
obvious noises or bright
traces.
The optical contact point has open
circuit signal interference or strong
interference signal intrusion.
1. Check if there is a strong interference signal
source; change the optical contact point location
if possible to avoid the influence of the strong
interference signal source.
2. Check the cable lines of the optical contact
point, if there is shielding net or situation that
the RF connector shielding effect is not good.
3. Tightly closed the equipment enclosure to
ensure the shielding effect; if possible add
shielding cover to the optical contact point and
reliable grounding.
After connecting the
network, the images of
several optical contact
points appear one or two
horizontal bright traces.
Power supply AC ripple interference
because of the bad earth of
equipment or power supply.
Check grounding situation of the equipment,
make sure that every equipment in the line has
been reliably grounding and the grounding
resistance must be <4 Ω.

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After connecting the
network, the received
optical power of the optical
contact point is unstable
and changes continuously.
The output RF signal is also
unstable. But the detected
optical output power of the
optical transmitter is
normal.
The optical fiber connector types do
not match, maybe the APC type
connect to PC type.
The optical fiber connector or adapter
may be polluted seriously or the
adapter has been damaged.
1. Check the type of optical fiber connector and
adopt the APC type optical fiber connector to
ensure the normal transmission of optical signal.
2. Clean the polluted optical fiber connector or
adapter. Specific operation methods see “Clean
and maintenance method of the optical fiber
connector”.
3. Replace the damaged adapter.
In many times, we misjudge the decline of the optical power or the reduce of optical receiver
output level as the equipment faults, but actually it may be caused by the incorrect
connection of the optical fiber connector or the optical fiber connector has been polluted by
the dust or dirt.
Now introduce some common clean and maintenance methods of the optical fiber active
connector.
1. Carefully pull off the optical fiber active connector from the adapter. The optical fiber active
connector should not aim at the human body or the naked eyes to avoid accidental injury.
2. Wash carefully with good quality lens wiping paper or medical degrease alcohol cotton. If use the
medical degrease alcohol cotton, still need to wait 1 to 2 minutes after wash, let the connector
surface dry in the air.
3. The cleaned optical fiber active connector should be connected to optical power meter to
measure output optical power to affirm whether it has been cleaned up.
4. When connect the cleaned optical fiber active connector back to adapter, should notice to make
the force appropriate to avoid the ceramic tube in the adapter crack.
5. If the output optical power is not normal after cleaning, should pull off the adapter and clean the
other connector. If the optical power still low after cleaning, the adapter may be polluted, clean it.
(Note: Be carefully when pull off the adapter to avoid hurting inside fiber.)
6. Use the dedicated compressed air or degrease alcohol cotton bar to clean the adapter. When use
the compressed air, the muzzle of the compressed air tank should aims at the ceramic tube of the
adapter, clean the ceramic tube with compressed air. When use degrease alcohol cotton bar,
carefully insert the alcohol cotton bar into the ceramic tube to clean. The insert direction should
be consistent, otherwise cannot reach ideal cleaning effect.

AON2200C Outdoor Optical Node
Solutions Provider for FTTx, RFoG, and HFC
www.ascentcomtec.com
Page 14 of 14
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
200023, Shanghai CHINA
Cheyenne, WY 82001, USA
Phone: [phone]
Phone: [phone]
EUROPE
VIETNAM
Pfarrer-Bensheimer-Strasse 7a
15 /F TTC Building, Duy Tan Street
55129 Mainz, GERMANY
Cau Giay Dist., Hanoi, VIETNAM
Phone: [phone]
Phone: [phone]
WEB: www.ascentcomtec.com
EMAIL: [e-mail]
Specifications and product availability are subject to change without notice.
Copyright © 2018 Ascent Communication Technology Limited. All rights reserved.
Ver. ACT_AON2200C_Optical_Node_QRG_V1b_Nov_2018