upcom HPO-V35 User manual

V.35 Fiber Modem
User Manual
Version: 2.0.2
Data: 03.07.2005

V.35 Fiber Modem Installation and Operation Manual
Page 2 of 13
C
Co on nt te en nt ts s
1. Product Overview.............................................................................................................3
2.Product Features...............................................................................................................3
3.Technical Indexes .............................................................................................................3
4. Description on Installation and Panel ...........................................................................4
4.1 Unpacking.................................................................................................................4
4.2 Front/Rear panels of an independent casing .............................................................4
4.3 Front and rear panels of Rack-mountable casing......................................................7
5. V.35 Fiber Modem Application.......................................................................................8
5.1 Definition of signal lines at V.35 interface................................................................8
5.1.1 Distribution diagram of guiding feet on M34 cored jack .......................8
5.1.2 Definition of signal lines at V.35 interface...............................................9
5.2 Standard V.35 crossover cable connection diagram..................................................9
5.3 Sittings of switch and jumper..................................................................................10
5.3.1 Clock setting..............................................................................................10
5.3.2 Phase selection ........................................................................................10
5.3.3 Settings of loopback test and pseudo-random code test ...................10
5.3.4 Framing/non-framing and time slot settings.........................................12
6. Common Problems........................................................................................................13

V.35 Fiber Modem Installation and Operation Manual
Page 3 of 13
1. Product Overview
V.35 Fiber Modem is a high-performance V.35 fiber optic modem developed by
using a dedicated integrated circuit. It is to modulate a N*64K V.35 data signal
directly over single- or multi-mode optic fiber for a transmission via optic cable line.
At another end of the optic cable, optical signal is demodulated into a V.35 data
signal. V.35 interface may be directly connected with the V.35 interfaces of image
and data terminals or the WAN ports of MUX, exchanger and router for a dedicated
network setup or a LAN connection.
2.Product Features
Rate Nx64Kbit/s (N=1—32)
Support the loopback of local analog/digital interface
Support remote loopback function
Support pseudo-random code test function
120km trunking -free transmission distance for single-mode optic fiber
Capable to be communicated with FE1 Fiber Modem
Available with complete line detection and alarm indications
Available with independent structure and 19-inch Rack-mountable structure
Rack-mountable structure can be inserted with 16 modules
AC 220V and DC –48V inputs may be selected for fiber optic modems of both
structure
For Rack-mountable fiber optic modems, dual power supply heat backup is
provided to ensure a high operating reliability
3.Technical Indexes
Optic interface:
Line mode type：CMI
Line mode rate：2.048Mbps
Operating wavelength：850nm,1310nm or 1550nm
Optic fiber connector：SC/PC
Applicable optic fiber：multi-mode, single-mode
Transmission distance：
Single-mode：up to 120km Multi-mode: up to 2km
V.35 interface：
Data rate：N×64Kbps （N=1~32）
Available with CTS/RTS (Hardware) flow control function

V.35 Fiber Modem Installation and Operation Manual
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Type of connector：M34 connector
Operating mode: DCE
Indicator lamps ：To indicate the operating status of power supply, data
receiving/sending, loopback and random code test, code missing
alarm, out-of-frame alarm etc.
Structure：
Independent：140mm(depth) x 210mm(width) x 42mm(height)
Rack-mountable：19in 4.5U standard casing
Power supply：
Independent：85V～264V AC input, 5V/2A output
-36V～-72V DC input , 5V/2A output
Rack-mountable：150V～260V AC input，5V/16A 、12V/1A output
-38V～-58V DC input，5V/16A 、12V/1A output
Power consumption：3W
Operating temperature：0℃～50℃
Storage temperature：-20℃～80℃
Humidity：5%～90% (free of condensate)
4. Description on Installation and Panel
4.1 Unpacking
After the equipment is unpacked, a check shall be done for the completeness.
If any part is found missing, please immediately contact our representative offices
or agents. Complete packing shall include the following items (for an independent
product):
One set of V.35 Fiber Modem
One V.35 Fiber Modem Operation Manual
One power line（V.35 Fiber Modem/AC）
Please also contact our representative offices or agents for any transportation
damage found with this product.
4.2 Front/Rear panels of an independent casing
V.35 Fiber Modem front panel：

V.35 Fiber Modem Installation and Operation Manual
Page 5 of 13
Front/Rear Panels of V.35 Fiber Modem
POWER：Power supply indicator lamp. Constantly lightening after the machine is
turned on.
RXD：Data receiving indictor lamp at V.35 interface. Flash indicates that there is
data output from V3.5 interface. The quicker it flashes, the higher rate of
data output from V3.5interface.
TXD：Data sending indictor lamp at V.35 interface. Flash indicates that there is data
input to V3.5 interface. The quicker it flashes, the higher rate of data input
to V3.5interface
LOF：E1 Alarm indicator lamp of input signal out-of-frame in optic line. Constantly
lightening indicates the alarm with local device; flash indicates the alarm
with opposite device. Alarm status of opposite device can be detected only
at framing mode.
LOS：E1 Alarm indicator lamp for code missing in optic line. Constantly lightening
indicates the alarm with local device. Flash indicates the alarm with
opposite device.
LOOP：Indicator lamp of loopback test status. When local device is at a loopback
status, the lamp flashes. When local device is not at a framing mode, it is
unable to detect whether opposite device is at a loopback test status.
PTOK：Indicator lamp of pseudo-random code test. When the device is at a
loopback status, pseudo-random code test can be made. If this lamp is
constantly lightening, it indicates that pseudo-random code passes the test.
V.35 Fiber Modem/AC rear panel：
V.35 Fiber Modem/AC Rear Panel Schematic
220V AC：AC power jack.
OFF ON：Power switch. When the ON button is pressed down, the power supply is
turned on.
V.35: V.35 interface, with a M34 cored jack.
TX RX : Receiving/sending jack of optical fiber, with TX as the sending terminal and
LOOP PTOK
FIBER MODEM
V35
POWER
TEST
LOOP PTOK
V.35
LOF LOS
E1
TXDRXD
V.35 -DCE
220V AC OFF ON
TX RX
V.35 -DCEV.35 -DCE
220V AC OFF ON
TX RXTX RX
1 2 3 4 5 6 7 8
ON
TIM_MOD1
LLOOP
ON
TIM_MOD0
TIM_MASK
V35_RCLK
OFF OFF OFF OFF
DLOOP RLOOP
PATT

V.35 Fiber Modem Installation and Operation Manual
Page 6 of 13
RX as the receiving terminal.
There is a coded switch S5 on the panel, which is used as the system
configuration switch to set such functions as clock, time slot, phase, loopback and
pseudo-random code test etc.
Wherein, S5.1 and S5.2 are clock settings.
S5.1＝OFF, S5.2=OFF：network clock at V.35 interface(Received Recovered).
S5.1 ＝OFF，S5.2＝ON：network clock at the optic fiber interface (Received
Recovered).
Remote time slot setting can be tracked only at this status.
S5.1=ON, S5.2=OFF: invalid
S5.1 ＝ON，S5.2＝ON：using local crystal OSC generating clock
S5.3: time slot setting
S5.3＝OFF，using remote time slot setting (valid only when S5.1 ＝OFF，S5.2
＝ON) S5.3＝ON，using local time slot setting
S5.4: for V.35 receiving clock phase selection
S5.4=OFF, using positive phase
S5.4=ON, using negative phase
S5.5: Local loopback setting (optic interface in direct loopback), ON valid.
S5.6: Local digital loopback (V.35 interface loopback), ON valid.
S5.7: Remote digital loopback (V.35 interface loopback), ON valid.
Valid at framing mode (0 time slot unused).
S5.8: Pseudo-random code test, ON valid, and valid at loopback status.
V.35 Fiber Modem bottom coded switch：
Baseplate Coded Switch
After time slot 0 is valid, other coded switches in whatever positions are all valid.
Select the number of time slots according to the expected rate. Normally for an
independent type, a time slot setting of automatic tracking Central Site module is
selected. Coded switches of plate-clip time slot correspond to S1, S2, S3 and S4.
V.35 Fiber Modem/DC rear panel：
V.35 Fiber Modem/DC Rear Panel Schematic
48V DC：–48Vdc input jack
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
E1 TS 0 7 15 23 31
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
E1 TS 0 7 15 23 31
V.35 -DCE
OFF ON
TX RX
48V DC
FG - +
V.35 -DCEV.35 -DCE
OFF ON
TX RXTX RX
48V DC
FG - +
48V DC
FG - + 1 2 3 4 5 6 7 8
ON
LLOOP
PATT
TIM_MOD1
OFF OFF
OFF
OFF
ON
TIM_MOD0
TIM_MASK
V35_RCLK
DLOOP RLOOP

V.35 Fiber Modem Installation and Operation Manual
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4.3 Front and rear panels of Rack-mountable casing
RACK front panel：
RACK Front Panel
+5V: 5V main power supply indicator lamp
+12V: 12V fan power supply indicator lamp
Under the panel is a group of indicator lamps matrix:
PWR : power supply lamp；
RXD : lightening upon data receiving at V.35；
TXD : lightening upon data sending from V.35；
LOS : lightening when the optic line gets lost ；
LOF : lightening after a synchronization of data out-of-frame；
TEST : lightening during loopback test (equivalent to LOOP)；
PTOK: lightening after a successful pseudo-random code test；
RACK rear panel：
RACK Rear Panel
This panel is composed of three small panels, as described below：
V.35 Fiber Modem module panel：
V.35 Fiber Modem Module Panel
RACK/ACAC redundancy power supply panel：
PWR
RXD
TXD
LOS
LOF
TES
T
PTO
K

V.35 Fiber Modem Installation and Operation Manual
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RACK/AC AC Redundancy Power Supply Panel
160~270 VAC：AC 220V input jack
ON OFF：power switch
+5V：5V main power supply indicator lamp；
+12V：12V fan power supply indicator lamp
RACK/DC DC redundancy power supply panel：
RACK/DC DC Redundancy Power Supply Panel
40~60 VDC ：DC-48V input connector (FG grounded, with“- +” terminals
connected with
48V input)
ON OFF：power switch
+5V：5V main power supply indicator lamp
+12V：12V fan power supply indicator lamp
5. V.35 Fiber Modem Application
5.1 Definition of signal lines at V.35 interface
5.1.1 Distribution diagram of guiding feet on M34 cored jack
Distribution diagram of guiding feet on M34 cored jack

V.35 Fiber Modem Installation and Operation Manual
Page 9 of 13
5.1.2 Definition of signal lines at V.35 interface
As shown：（ Operating mode：DCE）
Definition of Signal Lines at V.35 Interface
V.35 Feet
Signal
Function
Direction
A
CGND
Frame ground
——
B
GND
signal ground
——
C
RTS
request to send
input
D
CTS
consent to send
output
E
DSR
data set ready
output
F
DCD
data carrier detection
output
H
DTR
data terminal ready
input
P
TXD A
transmitting data line A
input
S
TXD B
transmitting data line B
input
R
RXD A
receiving data line A
output
T
RXD B
receiving data line B
output
U
EXTCLK A
exterior clock line A
input
W
EXTCLK B
exterior clock line B
input
V
RXCLA
receiving clock line A
output
X
RXCL B
receiving clock line B
output
Y
TXCLA
transmitting clock line A
output
AA
TXCL B
transmitting clock line B
output
5.2 Standard V.35 crossover cable connection diagram
V.35 feet
V.35 feet
CGND
A
————————————
A
CGND
GND
B
————————————
B
GND
RTS
C
————————————
D
CTS
CTS
D
————————————
C
RTS
DSR
E
————————————
H
DTR
DTR
H
————————————
E
DSR
TXDA
P
————————————
R
RXDA
TXDB
S
————————————
T
RXDB
RXDA
R
————————————
P
TXDA
RXDB
T
————————————
S
TXDB

V.35 Fiber Modem Installation and Operation Manual
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EXCA
U
————————————
V
RXCA
EXCB
W
————————————
X
RXCB
RXCA
V
————————————
U
EXCA
RXCB
X
————————————
W
EXCB
5.3 Sittings of switch and jumper
Independent device has totally 5 setting switches, with S5 located on the rear
panel and S1~S4 under the bottom cover. The user can easily make settings
without the need to open the cover.
5.3.1 Clock setting
V.35 interface timing (S5.1= OFF, S5.2=OFF): the sending timing is V.35 port
timing, and the received data, after buffering, is synchronized with V.35 port timing.
Optic interface receiving timing (optic interface originated from the clock,
S5.1=OFF，S5.2=ON): the sending timing is optic interface receiving timing, and
the received data, after buffering, is synchronized with optic interface receiving
timing. Under this timing mode, local time slot setting can automatically track the
opposite time slot setting.
Local main timing (S5.1=ON, S5.2=ON): the sending timing is of local crystal
OSC, and the received data, after buffering, is synchronized with local timing.
5.3.2 Phase selection
S5.4 is used for the receiving phase selection of V.35 interface.
5.3.3 Settings of loopback test and pseudo-random code test
S5.5～S5.8 of coded switch S5 are used for setting the loopback test and
pseudo-random code test.
S5.5 is local loopback control（LLOOP）and optic interface is directly looped back
to
V.35 interface. “OFF” indicates normal operation; “ON” indicates local loopback
test. The default is “OFF”. It is used for testing whether local device is in
normal operation.

V.35 Fiber Modem Installation and Operation Manual
Page 11 of 13
Local Loopback Schematic
S5.6: local digital loopback control (DLOOP). “OFF” indicates normal operation;
“ON” indicates local digital loopback. The default is “OFF”. With a loopback
from local V.35 interface to E1 optic interface, it is used for testing whether the
remote device and E1 optic line are in normal operation.
Local Digital Loopback
S5.7:“OFF”indicates normal operation；“ON”indicates command remote loopback.
The default is “OFF”. As this command must be sent through E1 optic line to
remote end for validness, it will become invalid at the following two cases: ①
the remote end is not V.35 Fiber Modem device; ②V.35 Fiber Modem is
working at a non-framing status, at this moment all time slots of E1 are used
for transmitting the data from V.35 interface at a rate of 2048Kbps. Through a
transmission of loopback command from local device to remote device, the
command remote loopback is achieved.
Remote Loopback
S5.8: Pseudo-random code test control (PATT). “OFF” indicates normal operation;
“ON” indicates pseudo-random sequence test. The default is “OFF”. It
generates a pseudo-random sequence code to be transmitted to V.35 optic
line output terminal and tests whether V.35 optic line input signal is in
compliance with this sequence standard, so as to judge whether the device
and line transmission have an error code.
pseudo-random Code Test
Remark: Pseudo-random sequence code test can be made only under a
V.35 Fiber Modem V35 Optical
Interface
Fiber Modem V35 Optical
Interface
V.35
Fiber Modem V35
V.35 V.35
Fiber Modem V35 Fiber Link
Remote
Local
V.35
V.35 Fiber Modem V35 Fiber Modem V35
Local Remote
Fiber Link

V.35 Fiber Modem Installation and Operation Manual
Page 12 of 13
loopback status. At this moment, constantly lightening of LOOP and PTOK/CRC
lamps shows local status, flash shows remote status; TXD and RXD lamps are
used for showing the status of local TXD or RXD.
5.3.4 Framing/non-framing and time slot settings
Totally 32 coded switches S1, S2, S3 and S4 are used for E1 time slot setting.
E1 Time Slot Setting
1st switch (S1.1) is used for controlling E1 framing/non-framing. “ON” refers to
non-framing mode.
31 switches, from 2nd—32nd(S1.2~S1.8, S2, S3, S4), are respectively used for
controlling the selection of 1st –31st time slots. Set at “ON”, the corresponding
time slot is selected; set at “OFF”, the corresponding time slot is not selected.
The rate of V.35 interface is completely dependent on the number of the
selected time slots. For example: the setting of 3rd switch to “ON” and all other
switches to “OFF” indicates that 2nd time slot is selected, at this moment the
rate is 64K; the setting of 7th and 8th switches to “ON” and all other switches to
“OFF” indicates that 6th and 7th time slots are selected, with a rate of
2×64K=128K. TS0 setting is used for specifying E1 frame to be transparent or
framing: “0”--framing, “1”--non-framing. But the bit has to be specified in
combination with other time slots. TS16 setting is used for controlling E1 frame
structure to be PCM30（CAS）or PCM31（CCS）: ‘0’—PCM30, at this moment
16th time slot must not be used for transmission service; ‘1’—PCM31, 16th time
slot can be used for transmission service. Besides, TS1—TS31 are
respectively used for controlling the selection of 1st—31st time slots: ‘1’—the
corresponding time slot is selected; ‘0’—the corresponding time slot is not
selected.
Typical application：Non-framing mode: 1st switch is set to “ON”, and all other
switches to “OFF” (other switches are located in such a way that the setting of
non-framing is unaffected) Framing mode: 1st switch is set to “OFF”, and all
other switches are set according to the time slot positions to be used by E1
channel and the rate of V.35 port. (If it is set to tracking remote time slot, the
time slot switch will become invalid)
Attention: Ex-works S1, S2, S3 and S4 are all set to “OFF”
Attention: The setting of tracking remote time slot; S5.2 to “ON”; S5.1 and S5.3 to
“OFF”
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
E1 TS 0 7 15 23 31
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
E1 TS 0 7 15 23 31

V.35 Fiber Modem Installation and Operation Manual
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6. Common Problems
Common Failures and Solutions
No
.
Failure
Cause
Solution
1
PWR
power
supply
indicator
lamp not
lightening
1.Power supply not properly
connected
2.Protector tube damaged
3. -48V DC input tie-line in
reverse connection
4.Internal power supply
circuit with failure
1.Check power switch and jack
2.Replace protector tube
3.Correct -48V power supply line
connection
4.Returned to the manufacturer
for repair.
２
LOF
out-of-fra
me alarm
lamp
lightening
1.Optic interface not clean
2.Optic fiber not well inserted
3.Wrong clock setting
4.Time slots of the devices at
two ends not conformance
5.Internal circuit damaged
1. Clean the connector of optic
interface
2. Insert the SC connector in
place
3. Refer to the description on rear
panel
4. Returned to the manufacturer
for repair.
3
LOS data
loss
alarm
lamp
lightening
1. Optic fiber in wrong
interconnection
2.Optic fiber not well inserted
3.Optic fiber broken
4.Internal circuit damaged
1. Correct the connection
2. Insert the SC connector in
place
3. Check optic cable
4. Returned to the manufacturer
for repair.
4
TXD
lamp not
lightening
V.35 interface not well
connected or the router etc.
not turned on.
1. Check the connecting line and
terminal device