This document provides information about the FRM220-Data fiber modem including: - Key specifications such as supported data rates up to 9.152Mbps, optical specifications, power requirements, and environmental specifications. - A description of the front and rear panels including LED indicators and loop back testing features. - Explanations of the DIP switch settings for configuring items like data rate, interface protocol, timing source, and loop back mode. - Brief descriptions of applications and clocking considerations for asymmetric data rates and extended transmission distances up to 120km.

1. CTC Union Technologies Co.,Ltd.
Far Eastern Vienna Technology Center
(Neihu Technology Park)
8F, No. 60 Zhouzi St., Neihu, Taipei 114,
Taiwan
T +886-2-26591021
F +886-2-26590237
E sales@ctcu.com
info@ctcu.com
marketing@ctcu.com
H www.ctcu.com
2009 CTC Union Technologies Co., LTD.
All trademarks are the property of their respective owners.
Technical information in this document is subject to
change without notice.
Introduction
User Guide The FRM220-Data is a fiber modem for high speed, up to 9.152Mbps,
synchronous and low speed synchronous or asynchronous data
Synchronous and Asynchronous Serial Data over Fiber
transmissions (V.35, RS-232, RS-530, X.21 or RS-449). The FRM220-Data
FRM220-Data V.35, RS-530/449, X.21, RS-232 fiber modem can be paired with FRM220-E1/T1 for Nx64K transmissions up
(Fiber Optical Modem) to 2048Kbps. All Fiber Modems are available with either multi-mode or
single-mode optical transceiver and with connectors for SC, ST, or FC. In
single mode, WDM (Wave Division Multiplexing with SC connector) is also
available in 20, 40, or 60KM reach, which will provide the ability to transmit
and receive data using only a single optical fiber. A unique feature of the
FRM220-Data fiber modem is the use of a common card design which may
either be inserted in the FRM220-CH01 single slot chassis as a stand-alone
modem or as a card when placed in the FRM220-CH20 In-band managed
rack.
The FRM220-DATA utilizes a HDB26F, 26 pin female connector, to reduce
the connector footprint on the card. Adapter cables provide the exact
physical connection for the required interface standard. The electrical
interface is settable by DIP switch, or by NMC manager in FRM220 chassis
Table of Contents for fully balanced RS-530 (includes X.21 and RS-449), for V.35 or for RS-
232. The FRM220-DATA also features a DIP or software settable
personality for DCE or DTE, eliminating the need for any extra null-modem
Introduction ------- 1 cables.
Specifications ------- 2
Panel ------- 3
LED Indicators ------- 4 The timing options provide for independent operation of clocks for Transmit
Loop Testing ------- 5 Clock and Receive Clock. The TC and RC may be clocked from internal
Location, DIP 3&4 Setting ------- 6 oscillator, from the data port external clock (via ETC pin) or recovered from
DIP 1 Setting ------- 7 the fiber receive side. Independent clocks for TC and RC may be used
DIP 2 Setting ------- 8 when upstream and downstream data rates are asymmetric, as is
sometimes the case with VSAT applications. The FRM220-DATA can fully
Application ------- 9-10 meet these special application requirements, while extending transmissions
Clocking ------- 11-12 up to 120KM over fiber.
Cable Pin Assignments ------- 13
Version 1.0 May 2009
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2. Technical Specifications Panel
Ports 1 port V.35/RS232/RS530/X.21/RS449 Figure 1. Upper Panel of FRM220-Data(S)
Connector HDB26F (adapter cable to DB15, 25, 37 or MB34)
Line Code NRZ
Data rate n x 64Kbps where n=1 to 143 (64 ~ 9152Kbps),
Low Speed Synchronous & Asynchronous
75 ~ 460.8kbps rate
Clock modes Transparent, Recovery (TC or RC), External, Internal
RC, TC, ETC normal or inverted
Control Signals CTS/RTS constantly ON, follows local RTS/CTS
or follows remote CTS/RTS
DSR/DTR constantly ON, follows local DSR/DTR
or follows remote DSR/DTR
DCD constantly ON, except during signal loss
Test Loops LLB (Local Loop Back)
RLB (Remote Loop Back)
FRM220-Data FRM220-Data-S
RRLB (Request Remote Loop Back)
Optical Specifications Figure 2. Stand-alone Rear Panel of FRM220-Data
Connector ST,SC,FC,LC (SFP) or SC-BiDi (single fiber)
Optical mode Multi-mode or Single-mode
Wave length 1310nm or1550nm
Power Margin 11dB(2Km,M/M) ,12dB~ 35 dB(15 ~ 120Km,S/M)
Data rate 40.32Mbps
Line coding Scrambled NRZ
Bit Error Rate Less than 10-11
Power
Adapter: 12VDC, Built-in AC Power 100-240V, Built-in DC Power 18-72V Consumption <4W
Environment
Operating -- -10°C ~ 60°C, Storage -- -20°C ~ 70°C, Humidity -- 10 ~95% (non-condensing)
Weight
FRM220-Data(S)-DC12: 400g FRM220-Data(S)-AC: 750g
FRM220-Data(S)-DC48: 750g FRM220-Data(S)-AD: 800g Data –DC12 Data –AC Data –DC48 Data –AD
Dimensions (W x D x H) mm
FRM220-Data(S)-DC12: 88 x 160 x 24 FRM220-Data(S)-AC: 135 x 201 x 35
FRM220-Data(S)-DC48: 135 x 201 x 35 FRM220-Data(S)-AD: 135 x 201 x 35
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LED Indicators Loop back Testing (LBT):
This fiber modem incorporates loop back features which allow loop back
testing to confirm that the fiber loop and interface transceivers are operating
normally or not. Loop back is enabled by DIP switch or via NMC manager in
FRM220 chassis
FIBER
SFP
1x9
Data Port Loop Back
LLB
Local
Loop Back
Local Side Remote Side
LED State Status
PWR (Green) On Power on RLB
Flash During upgrade Remote
Off Power off or port disabled Loop Back
LINK (Green) On Fiber link Local Side Remote Side
Flash Remote side sync loss
Off Fiber no link RRLB
Request
RTS (Green) On Space Remote
Off Mark Loop Back
TEST (Red) On Test active
Off Normal operation
TD (Green) On Space Fiber Loop Back
Off Mark
Flash Data flow LLB
Local
RD (Green) On Space Loop Back
Off Mark
Local Side Remote Side
Flash Data flow
CTS (Green) On Space RLB
Off Mark Remote
DCD (Green) On Space Loop Back
Off Mark Local Side Remote Side
RRLB
Request
Remote
Loop Back
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3. DIP Switch 1
DIP Switches On PCB SW1 SW STATE Function
1 2 3 4 5 Receive Data Rate Select
Group1 Group2 Group3 Group4 Group5 Group6 Group7 Group8
OFF OFF OFF OFF OFF 64K 2112K 4160K 6208K 8256K 75 NA NA
ON OFF OFF OFF OFF 128K 2176K 4224K 6272K 8320K 112.5 NA NA
OFF ON OFF OFF OFF 192K 2240K 4288K 6336K 8384K 150 NA NA
ON ON OFF OFF OFF 256K 2304K 4352K 6400K 8448K 225 NA NA
OFF OFF ON OFF OFF 320K 2368K 4416K 6464K 8512K 300 NA NA
ON OFF ON OFF OFF 384K 2432K 4480K 6528K 8576K 450 NA NA
OFF ON ON OFF OFF 448K 2496K 4544K 6592K 8640K 600 NA NA
ON ON ON OFF OFF 512K 2560K 4608K 6656K 8704K 900 NA NA
OFF OFF OFF ON OFF 576K 2624K 4672K 6720K 8768K 1200 NA NA
ON OFF OFF ON OFF 640K 2688K 4736K 6784K 8832K 1800 NA NA
OFF ON OFF ON OFF 704K 2752K2 4800K 6848K 8896K 2400 NA NA
ON ON OFF ON OFF 768K 2816K 4864K 6912K 8960K 3600 NA NA
OFF OFF ON ON OFF 832K 2880K 4928K 6976K 9024K 4800 NA NA
ON OFF ON ON OFF 896K 2944K 4992K 7040K 9088K 7200 NA NA
1,2,3,4,5 OFF ON ON ON OFF 960K 3008K 5056K 7104K 9152K 9600 NA NA
ON ON ON ON OFF 1024K 3072K 5120K 7168K NA 14400 NA NA
DIP Switch 3 DIP Switch 4 OFF OFF OFF OFF ON 1088K 3136K 5184K 7232K NA 19200 NA NA
ON OFF OFF OFF ON 1152K 3200K 5248K 7296K NA 28800 NA NA
DIP SW3 SW STATE Function DIP SW Function
OFF ON OFF OFF ON 1216K 3264K 5312K 7360K NA 38400 NA NA
1 2 DSR/DTR output Setting 1 2 Loop Back Function Setting
OFF OFF Constantly ON ON ON OFF OFF ON 1280K 3328K 5376K 7424K NA 57600 NA NA
1,2 OFF OFF OFF OFF OFF ON OFF ON 1344K 3392K 5440K 7488K NA 76800 NA NA
ON OFF Follow Local Input DTR/DSR
1,2 ON OFF LLB
OFF ON Follow Remote Input ON OFF ON OFF ON 1408K 3456K 5504K 7552K NA 115200 NA NA
ON ON NA OFF ON RLB OFF ON ON OFF ON 1472K 3520K 5568K 7616K NA 153600 NA NA
ON ON RRLB ON ON ON OFF ON 1536K 3584K 5632K 7680K NA 230400 NA NA
3 4 CTS/RTS output Setting
OFF OFF Constantly ON OFF OFF OFF ON ON 1600K 3648K 5696K 7744K NA 307200 NA NA
3,4 3 Loop Back Select
ON OFF Follow Local Input RTS/CTS ON OFF OFF ON ON 1664K 3712K 5760K 7808K NA 460800 NA NA
3 OFF Fiber Side Loop Back
OFF ON Follow Remote Input OFF ON OFF ON ON 1728K 3776K 5824K 7872K NA NA NA NA
ON Data Port Side Loop Back ON ON OFF ON ON 1792K 3840K 5880K 7936K NA NA NA NA
ON ON NA
4 DCD Output Setting OFF OFF ON ON ON 1856K 3904K 5952K 8000K NA NA NA NA
6 ETC Polarity Setting
5 OFF Normal Constantly ON (except when ON OFF ON ON ON 1920K 3968K 6016K 8064K NA NA NA NA
OFF OFF ON ON ON ON 1984K 4032K 6080K 8128K NA NA NA NA
ON Invert 4 fiber sync loss) ON ON ON ON ON 2048K 4096K 6144K 8192K NA NA NA Async
6 TC Polarity Setting
6 OFF Normal Follow Fiber Sync and 6 7 8 Receive Data Rate Group Select
ON
ON Invert OFF OFF OFF Group 1, N*64, N from 1 to 32, 64K~2048K
remote DTE DCD Input
ON OFF OFF Group 2, N*64K, N from 33 to 64, 2112K~4096K
7 RC Polarity Setting
7 OFF Normal OFF ON OFF Group 3, N*64K, N from 65 to 96, 4160K~6144K
6,7,8
ON Invert ON ON OFF Group 4, N*64K, N from 97 to 128, 6208K~8192KK
OFF OFF ON Group 5, N*64K, N from 129 to 143, 8256K~9152K
8 Data Port Mode Setting
8 OFF DCE Mode ON OFF ON Group 6, Low Speed Rate, 75~460800
ON DTE Mode OFF ON ON Group 7, NA
ON ON ON Group 8, NA and Async
9 10 Data Port Interface Setting
OFF OFF RS-530,RS-449,X.21 9 10 Receive Side Timing Source
9,10 ON OFF V.35 OFF OFF Recovery from remote transmit side timing
9,10
OFF ON RS-232 ON OFF Internal
ON ON NA OFF ON ETC (DCE) / RC input (DTE)
ON ON Recover from remote receive side timing (DCE) / TC input (DTE)
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DIP Switch 2 Application
SW1 SW STATE Function The FRM220-Data modem works in point-to-point applications, either as a
1 2 3 4 5 Transmit Data Rate Select
Group1 Group2 Group3 Group4 Group5 Group6 Group7 Group8
stand-alone or when placed in the FRM220-CH20 managed rack.
OFF OFF OFF OFF OFF 64K 2112K 4160K 6208K 8256K 75 NA NA Additionally, a remote FRM220-Data can be linked to a local FRM220-
ON OFF OFF OFF OFF 128K 2176K 4224K 6272K 8320K 112.5 NA NA E1/T1 to provide fractional E1 DSU/CSU functions.
OFF ON OFF OFF OFF 192K 2240K 4288K 6336K 8384K 150 NA NA
ON ON OFF OFF OFF 256K 2304K 4352K 6400K 8448K 225 NA NA
OFF OFF ON OFF OFF 320K 2368K 4416K 6464K 8512K 300 NA NA
ON OFF ON OFF OFF 384K 2432K 4480K 6528K 8576K 450 NA NA
OFF ON ON OFF OFF 448K 2496K 4544K 6592K 8640K 600 NA NA
ON ON ON OFF OFF 512K 2560K 4608K 6656K 8704K 900 NA NA
OFF OFF OFF ON OFF 576K 2624K 4672K 6720K 8768K 1200 NA NA
ON OFF OFF ON OFF 640K 2688K 4736K 6784K 8832K 1800 NA NA
OFF ON OFF ON OFF 704K 2752K2 4800K 6848K 8896K 2400 NA NA
ON ON OFF ON OFF 768K 2816K 4864K 6912K 8960K 3600 NA NA
OFF OFF ON ON OFF 832K 2880K 4928K 6976K 9024K 4800 NA NA
ON OFF ON ON OFF 896K 2944K 4992K 7040K 9088K 7200 NA NA
1,2,3,4,5 OFF ON ON ON OFF 960K 3008K 5056K 7104K 9152K 9600 NA NA
ON ON ON ON OFF 1024K 3072K 5120K 7168K NA 14400 NA NA
OFF OFF OFF OFF ON 1088K 3136K 5184K 7232K NA 19200 NA NA
ON OFF OFF OFF ON 1152K 3200K 5248K 7296K NA 28800 NA NA
OFF ON OFF OFF ON 1216K 3264K 5312K 7360K NA 38400 NA NA
ON ON OFF OFF ON 1280K 3328K 5376K 7424K NA 57600 NA NA
OFF OFF ON OFF ON 1344K 3392K 5440K 7488K NA 76800 NA NA
ON OFF ON OFF ON 1408K 3456K 5504K 7552K NA 115200 NA NA
OFF ON ON OFF ON 1472K 3520K 5568K 7616K NA 153600 NA NA
Point-to-Point
ON ON ON OFF ON 1536K 3584K 5632K 7680K NA 230400 NA NA
OFF OFF OFF ON ON 1600K 3648K 5696K 7744K NA 307200 NA NA This is the simple application using the modem pair.
ON OFF OFF ON ON 1664K 3712K 5760K 7808K NA 460800 NA NA
OFF ON OFF ON ON 1728K 3776K 5824K 7872K NA NA NA NA DCE DCE
ON ON OFF ON ON 1792K 3840K 5880K 7936K NA NA NA NA To DTE To DTE
OFF OFF ON ON ON 1856K 3904K 5952K 8000K NA NA NA NA
ON OFF ON ON ON 1920K 3968K 6016K 8064K NA NA NA NA
OFF ON ON ON ON 1984K 4032K 6080K 8128K NA NA NA NA
ON ON ON ON ON 2048K 4096K 6144K 8192K NA NA NA Async
6 7 8 Transmit Data Rate Group Select Local Remote
OFF OFF OFF Group 1, N*64, N from 1 to 32, 64K~2048K
ON OFF OFF Group 2, N*64K, N from 33 to 64, 2112K~4096K Set both local and remote modems to DCE Data Port Mode. Set the local
OFF ON OFF Group 3, N*64K, N from 65 to 96, 4160K~6144K modem's RC and TC both to internal and set the data rate. Set the remote
6,7,8
ON ON OFF Group 4, N*64K, N from 97 to 128, 6208K~8192KK
OFF OFF ON Group 5, N*64K, N from 129 to 143, 8256K~9152K modem's RC to 'Recovery from remote transit side timing' and set TC to
ON OFF ON Group 6, Low Speed Rate, 75~460800 'Same as Receive Side Timing'. Match the data rate setting on the remote
OFF ON ON Group 7, NA modem.
ON ON ON Group 8, NA and Async
9 10 Transmit Side Timing Source
OFF OFF Same as Receive Side Timing Source
9,10
ON OFF Internal
OFF ON ETC (DCE) / RC input (DTE)
ON ON Recover from remote receive side timing (DCE) / TC input (DTE)
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4. Extension Clocking
This is the in-line application using the modem pair to extend a serial The modem's clocking has completely independent transmit and receive
interface a long distance over fiber. clocks (TC & RC) with clock source selectable for each from internal
oscillator, external clock, local RC clock, local TC clock, remote TC clock or
DTE DCE
From DCE To DTE remote RC clock.
DCE Mode Clock Operation
The following graphic explains the clock operation when the modem is in
Local Remote
DCE mode. In DCE mode, the TC and RC lines are outputs. The ETC is an
input line. There are 4 parameters to choose from for both the receive clock
Set local modem to DTE and remote modem to DCE Data Port Mode. Set and transmit clock timing.
the local modem's RC to ETC and set the data rate (to match expected
rate). Set local TC to 'Same as Receive Side Timing Source). Set the RD Receive Clock Transmit Clock
remote modem's RC to 'Recovery from remote receive side timing' and set RC 1 Recover from TX Side timing 5 Same as RC **
TC to 'Same as Receive Side Timing'. Match the data rate setting on the TC 2 Internal 6 Internal
remote modem. TD 3 ETC 7 ETC
ETC 4 Recover from remote RC 8 Recover from remote RC
2-Way Clock (transparent)
This is the transparent application using the modem pair. 1. Clock source for RC comes via the fiber from the remote's transmit side
timing.
DTE DTE 2. Clock source for RC comes from the local internal oscillator.
From DCE From DCE 3. Clock source for RC comes from the external clock input line.
4. Clock source for RC comes via the fiber from the remote's receive side
timing.
5. Clock source for TC is the same as RC. **Note that this is the normal or
Local Remote default mode for typical single clock operation of the modems. Do not set
Set local and remote modems to DTE Data Port Mode. Set the local other TC clock option unless your application requires the dual
modem's RC to ETC and set the data rate (to match expected rate). Set asymmetrical clocks.
local TC to 'Same as Receive Side Timing Source). Set the remote 6. Clock source for TC comes from the local internal oscillator.
modem's RC to ETC and set TC to 'Same as Receive Side Timing'. Match 7. Clock source for TC comes from the external clock input line.
the data rate setting on the remote modem. 8. Clock source for TC comes via the fiber from the remote's receive side
timing.
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Cable Pin Assignments for FRM220-Data
DTE Mode Clock Operation Part no.. 58-H2MD2F004 Part no.. 58-H2MD3F002 Part no.. 58-H2MD1F002
The following graphic explains the clock operation when the modem is in RS-530 (DB25) RS-449 (DB37) X.21 (DB15)
DTE mode. In DTE mode, RC and TC are input lines, while ETC is an HD26
Pin Signal
Mode
Pin Signal
Mode
Pin Signal
Mode
DCE DTE DCE DTE DCE DTE
output line. DTE is not the standard modem mode, but it is the desired 1 1 Shield x x 1 FG x x 1 Shield x x
mode when applying the in-line or extension application. 2 2 TD(A) BA IN OUT 4 TD(A) SD IN OUT 2 TD(A) T IN OUT
3 3 RD(A) BB OUT IN 6 RD(A) RD OUT IN 4 RD(A) R OUT IN
4 4 RTS(A) CA IN OUT 7 RTS(A) RS IN OUT 3 RTS(A) C IN OUT
RD Receive Clock Transmit Clock 5 5 CTS(A) CB OUT IN 9 CTS(A) CS OUT IN
6 6 DSR(A) CC OUT IN 11 DSR(A) DM OUT IN
RC 1 Recover from TX Side timing 5 Same as RC *** 7 7 SG AB x x ** SG,RC,SC 8 Gnd G X x
TC 2 Internal 6 Internal 8
9
8
21
DCD(A) CF OUT
RLB RL IN
IN
OUT
13
14
DCD(A) RR OUT
RLB RL IN
IN
OUT
5 DCD(A) I OUT IN
TD 3 RC Input ** 7 RC Input 10 25 TM OUT IN 18 TM OUT IN
ETC 4 TC Input 8 TC Input 11 14 TD(B) BA IN OUT 22 TD(B) SD IN OUT 9 TD(B) T IN OUT
12 23 DTR(B) CD IN OUT 30 DTR(B) TR IN OUT
13 19 RTS(B) CA IN OUT 25 RTS(B) RS IN OUT 10 RTS(B) C IN OUT
14 13 CTS(B) CB OUT IN 27 CTS(B) CS OUT IN
1. Clock source for RC comes via the fiber from the remote's transmit side 15 15 TC(A) OUT IN 5 TC(A) ST OUT IN
timing. 16 11 ETC(B) DA IN OUT 35 ETC(B) TT IN OUT 14 ETC(B) * IN OUT
17 17 RC(A) DD OUT 8 RC(A) RT OUT 6 RC(A) S OUT
2. Clock source for RC comes from the local internal oscillator. 18 18 LLB LL IN OUT 10 LLB LL IN OUT
3. Clock source for RC comes from the RC input line. **Note, this is the 19
normal or default operation when the modem is in DTE mode. 20 20 DTR(A) CD IN OUT 12 DTR(A) TR IN OUT
21 16 RD(B) BB OUT IN 24 RD(B) RD OUT IN 11 RD(B) R OUT IN
4. Clock source for RC comes from the TC input line. 22 22 DSR(B) CC OUT IN 29 DSR(B) DM OUT IN
5. Clock source for TC is the same as RC. ***Note that this is the normal or 23 12 TC(B) DB OUT IN 23 TC(B) ST OUT IN
24 24 ETC(A) DA IN OUT 17 ETC(A) TT IN OUT 7 ETC(A) * IN OUT
default mode for typical single clock operation of the modems. Do not set 25 9 RC(B) DD OUT IN 26 RC(B) RT OUT IN 13 RC(B) S OUT
other TC clock option unless your application requires the dual 26 10 DCD(B) CF OUT IN 31 DCD(B) RR OUT IN 12 DCD(B) I OUT IN
** For RS-449, signal ground goes to three pins; 19,20 & 37
asymmetrical clocks. * The external clock connection for X.21 is non-standard but provided for compatibility with other interface types.
6. Clock source for TC comes from the local internal oscillator. Part no.. 58-H2MM3F003 Part no.. 58-H2MD2F003
7. Clock source for TC comes from the RC input line. V.35 (MB34) RS-232 (DB25)
8. Clock source for TC from the TC input line. HD26
Pin Signal
Mode
Pin Signal
Mode
DCE DTE DCE DTE
1 A Shield x x 1 FG x x
2 P TD(A) IN OUT 2 TD IN OUT
3 R RD(A) OUT IN 3 RD OUT IN
4 C RTS IN OUT 4 RTS IN OUT
5 D CTS OUT IN 5 CTS OUT IN
6 E DSR OUT IN 6 DSR OUT IN
7 B SG x x 7 SG x x
8 F DCD OUT IN 8 DCD OUT IN
11 S TD(B) IN OUT
15 Y TC(A) OUT IN 15 TC OUT IN
16 W ETC(B) IN OUT
17 V RC(A) OUT 17 RC OUT IN
20 H DTR IN OUT 20 DTR IN OUT
21 T RD(B) OUT IN
23 AA TC(B) OUT IN
24 U ETC(A) IN OUT 24 ETC IN OUT
25 X RC(B) OUT IN
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