Optelecom 9000 Series Installation and Operation Manual Model

Optelecom 9000 Series
Installation and Operation Manual
Model 9551Y
Eight Channel RS232 Fiber Optic Multiplexer/Demultiplexer
For bidirectional transmission of
RS232 data over one optical fiber
UM50190, Manual 9551Y, Rev. C
Table of Contents
Section
Page
Safety Instructions
4
Functional Description
5
9551Y Indicator, Selector Switch, and Connector Location and Function
6
Connection and Configuration Guide
7
Operation of the 9551Y
12
Operation with the Network Management Software
14
Specifications for the 9551Y
15
3
Safety Instructions
Note 1
This product contains a Class IIIb laser or LED fiber optic emitter. The
following safety precautions apply.
WARNING:
Do not disconnect the fiber optic connector while the unit is powered
up. Exposure to Class I invisible optical radiation is possible when the internal fiber optic
connector is disconnected while the unit is powered up.
All Laser versions have one of two DANGER labels, shown below, found on the front
panel and/or on the edge of the circuit card containing the laser, near the fiber optic
connector.
DANGER
Invisible Laser Radiation
When Open AVOID DIRECT
EXPOSURE TO BEAM.
CAUTION:
Using controls, making adjustments or performing operations other than
those specified may result in hazardous radiation exposure. Exposure for only seconds
may cause permanent eye damage as well as other injuries.
Note 2
This assembly contains parts sensitive to damage by electro-static
discharge (ESD). Use ESD precautionary procedures when touching,
removing or inserting parts or assemblies.
4
Functional Description
Two TKH Security USA Model 9551Ys work in tandem to transport eight channels of RS232 serial port data
between two points via a single optical fiber. In each unit, the data is converted to standard logic levels,
multiplexed using TDM techniques, encoded and converted to light for transmission over an optical fiber.
Received optical data is converted to logic levels, demultiplexed, and then converted back to RS232
compatible data.
The Model 9551Y has two operating modes: Modem mode and Multiplexer mode.
A) In the Modem mode, the unit is configured to emulate a wire modem (DCE) in the way the signals are
routed (see Figure 3). Also, in modem mode, a full complement of clock source and rates may be selected
for synchronous operation.
B) In Multiplexer mode, the unit is configured as a straight through, transparent, full duplex RS232 data time
division multiplexer. Also, in this mode a data re-clocking circuit may be enabled to resynchronize the
received data on the primary channel with the transmit clock input to a channel reserved for that purpose.
This feature allows the unit to function in a synchronous tail circuit without any concern for the link
transmission delay (see Figure 2).
The 9551Y is a single-width, rack-mountable card compatible with Series 9000 card chassis. It operates on
6VDC power from the chassis backplane. It is optically compatible with the Model 9555Y standalone unit.
5
9551Y Indicator, Selector Switch, and Connector Location and
Function
FIGURE 1
1.
LED INDICATORS
a. SYNC — When illuminated, this green LED indicates that the demux is synchronized with the
incoming optical data signal.
b. LOOP — When illuminated, this green LED that the remote (far end) demux is synchronized with the
incoming optical data signal. This means that two-way communication (LOOP) is established.
c. LOOPBACK — When illuminated, this yellow LED indicates that the unit has been placed in
LOOPBACK mode by setting the LOOPBACK switch ON.
d. SYNC — When illuminated, this red LED indicates that the demux is not synchronized with the
incoming optical data signal.
2.
OPTICAL INPUT/OUTPUT PORT:
Provides a connection for transmitting and receiving data over an optical fiber to a corresponding optical
port at the far end unit.
3.
MODE/CLOCK SELECT SWITCH:
Selects Modem or Multiplexer mode, internal clock rate or external clock select, and enables synchronous
data reclocking for synchronous tail circuit operation.
4.
RS232 ELECTRICAL DATA INPUT/OUTPUT CONNECTOR:
The RS232 signals are connected to the Model 9551Y via a single 25-pin female D-shell connector.
5.
LOOPBACK SWITCH:
When S1 is turned ON (Position1 in the down position) the unit is taken out of OPERATE mode and placed
in LOCAL AND REMOTE LOOPBACK mode. When in LOOPBACK mode, all data inputs are looped back to
their respective outputs and an incoming optical signal to the optical IN port is looped back and
retransmitted from the optical OUT port, effecting a loopback of the data at the remote unit. While in
LOOPBACK mode, both the SYNC and LOOP indicators should be illuminated.
6
Connection and Configuration Guide
SET-UP PROCEDURES
Although the MODE/CLK SELECT switches may be set at any time, it may be more convenient to set them
prior to mounting the units. These switches allow the user to select:
A) Modem or Multiplexer mode
B) Synchronous reclocking enable (Multiplexer mode)
C) Clock source/rate (Modem mode)
Switches 1 through 4 are for clock source/clock rate select. Refer to Table 1 for the applicable settings. The clock
rates given are for DCE source outputs from pin 15 of the Model 9551Y. If EXTERNAL is selected, the clock signal
from the local DTE is input on pin 24 of the Model 9551Y. If RECEIVE is selected, the clock signal recovered from
the received optical signal is output on pin 17 and pin 15.
TABLE 1 — SWITCH SETTINGS FOR INTERNAL CLOCK RATE OR CLOCK SOURCE
Clock Rate/Source
1.2 kHz
1.8 kHz
2.4 kHz
3.6 kHz
4.8 kHz
7.2 kHz
9.6 kHz
14.4 kHz
19.2 kHz
28.8 kHz
38.4 kHz
57.6 kHz
76.8 kHz
115.2 kHz
External
Receive
Pos 1
up
dn
up
dn
up
dn
up
dn
up
dn
up
dn
up
dn
dn
up
Mode/Clock Select Switches
Pos 2
Pos 3
dn
dn
dn
dn
dn
up
dn
up
dn
up
dn
up
up
dn
up
dn
up
dn
up
dn
up
up
up
up
up
up
up
up
dn
dn
dn
dn
7
Pos 4
up
up
dn
dn
up
up
dn
dn
up
up
dn
dn
up
up
dn
dn

Switch 5 enables the synchronous data reclocking when used in a synchronous tail circuit. This switch is
usually not set until the system is in operation to determine if it should be down. If the Modem mode is
selected, the switch must be off.

Switch 6 should be up for Multiplexer mode and down for Modem mode. See Figures 2 and 3 for the signal
routing in each of these modes.
ELECTRICAL CABLING
The RS232 signals are connected to the Model 9551Y via a single mating 25-pin male D-shell connector. Connect
the signals to the connector per the following figures. For transmission of data and clock information use two
RS232 channels.
In Modem mode, in most cases it is possible to make a 1-to-1 wire connection between the DTE and the
9551Ys. Refer to Figures 2 and 3 for the signal routing.
In Multiplexer mode, if used as an asynchronous multiplexer or if clock and data are being transferred in a
setup other than a synchronous tail circuit, simply connect your equipment outputs to the 9551Y inputs and
vice versa, per Figure 2.
If the 9551Ys are used in a synchronous tail circuit, wire the data and clock I/O per the synchronous tail circuit
hookup as shown in Figure 4. Other channels may be hooked up as desired to carry control lines or other RS232
signals.
8
FIGURE 2 — SIGNAL ROUTING, MULTIPLEXER MODE
9
FIGURE 3 — SIGNAL ROUTING, MODEM MODE
10
FIGURE 4 — SYNCHRONOUS TAIL CIRCUIT HOOKUP
DIPSWITCH SETTINGS — SYNCHRONOUS RECLOCKING
If the 9551Y is in Multiplexer mode and operating as a synchronous tail circuit, whereby the equipment
outputs a clock and requires the data presented to it to be synchronous with that clock and to have the
correct phase relationship to that clock, then the Synchronous Reclock switch (Switch #5) may have to be
enabled, depending on the clock rate and the link distance. Figure 4 shows the typical hookup for a tail circuit
of a modem to terminal equipment and Figure 5 gives examples of two different times of travel (from two
different link lengths), one resulting in a situation where the reclocking can be disabled and one where it must
be enabled. As a rule of thumb, leave the reclocking disabled and enable it only if it doesn't work in the
disabled mode. If this approach does not result in success (an operational link), it will be necessary to observe
the clock and data signals at the clock source end with a breakout box and an oscilloscope. Only the switch
at the clock source end mux should be enabled if required, not the switch at the data source end.
11
Operation of the 9551Y
VERIFICATION OF NORMAL OPERATION
Under normal operation, the PWR, SYNC, and LOOP indicators will be illuminated and selected RD indicators
may be illuminated if data is being received on that channel. If wire connections are not yet made and you
wish to confirm the operation of any one or more channels, just make a temporary connection between the
Test (+) output, pin 9, and the input you wish to test. The corresponding output per the signal routing
diagram should measure greater than 4 volts when referenced to the common pin.
TROUBLESHOOTING
TABLE 2 — INDICATOR LED FUNCTION
Symptom
Possible Cause
PWR not illuminated
The power supply is bad, the power connection is bad, or the
connection is reversed.
SYNC not illuminated or SYNC
illuminated
The optical connection at either end is bad, the optical fiber cable is
defective, or the Model 9551Y is bad at either end.
LOOP not illuminated
The same causes as “SYNC not illuminated” but in the outgoing
direction only.
12
LOOPBACK TEST MODE
FIGURE 5 – SIGNAL ROUTING; OPERATE AND LOOPBACK
If trouble is encountered and the fault needs to be isolated or if proper data connections need to be verified in
the absence of the optical cable, the LOOPBACK TEST mode may be helpful.
Refer to Figure 5 for the following discussion. When the loopback test mode is enabled by setting S1 (Loopback
Switch) position 1 in the down position, the yellow LPBK indicator on the front panel will illuminate. See Figure 1
for the switch location on the printed wiring board. When in loopback test mode, the composite data output
from the data multiplexer is disconnected from the optical transmitter and internally looped back to the
demultiplexer. This effectively loops all data inputs back to the corresponding outputs. Good data loopback
confirms good local data/audio interface circuitry and good local mux and demux operation.
Also, in LOOPBACK TEST mode, data output from the optical receiver is disconnected from the demux input and
connected to the optical transmitter, retransmitting the received optical signal back to the remote units. This will
cause the data inputs to the remote unit to be routed back to their respective outputs. Successful remote
loopback of data confirms that the mux/demux sections of the remote unit as well as the entire bidirectional
optical link are functioning properly. NOTE: Data jitter increases as the optical receiver sensitivity limit is
reached. The jitter produced in each direction is additive when conducting this test. This test may not be
successful if operating at the limit of sensitivity of one of the optical receivers.
13
Operation with the Network Management Software
Operation of the 9551Y with the Network Management System software consists of the following parameters:
1. Card Location
2. Card Size (Number of Slots)
3. Card Name (Model Number)
4. Serial Number
5. Revision Number
6. Chronometer Value (Cumulative Hours of Operation)
7. Reset Cycles (Cumulative Number of Power Cycles)
8. Firmware Revision
9. Local Demux in Sync/Not in Sync
10. Remote Demux In Sync/Not in Sync (Loop)
11. RX Data Activity (Ch 1) Active/Not Active
12. RX Data Activity (Ch 2) Active/Not Active
13. RX Data Activity (Ch 3) Active/Not Active
14. RX Data Activity (Ch 4) Active/Not Active
15. RX Data Activity (Ch 5) Active/Not Active
16. RX Data Activity (Ch 6) Active/Not Active
17. RX Data Activity (Ch 7) Active/Not Active
18. RX Data Activity (Ch 8) Active/Not Active
19. Local Loopback Mode Active/Not
20. Received Optical Power
21. Laser Current
22. Local Loopback (Control)
14
Specifications for the 9551Y
OPTICAL
Fiber Coupled Power (dBm)
Emitter Version
/MM-08T-
/MM-13T-
/SM-13T-
/SM-15T-
50/125 µm
-21
-22
N/A
N/A
62.5/125 µm
-17
-18
N/A
N/A
09/125 µm
N/A
N/A
-11
-11
Wavelength
850
1310
1310
1550
Min. Rx Opt. Input Power
-35
-35
-35
-35
Max. Rx Opt. Input Power
-6
-6
-6
-6
Estimated Distance (Km)1,2
3.3
3.3
60
60
1
Range based on losses of 3.0 dB/km @ 850 nm or 1.0 dB/km @ 1310 nm for 62.5/125 multimode fiber and 0.35 dB/km @ 1310 nm or 0.25 dB/km @ 1550
nm for 09/125 single mode fiber, and includes a 3 dB safety factor.
2
Range may be limited by chromatic dispersion and by fiber quality.
DATA
Signal Interface
Channels
Sampling Rate
Data Rate
Async
Sync
Pulse Width Distortion
Connector
RS232
8, synchronous or asynchronous
920 kHz
DC to 115 kbps
1.2, 1.8, 2.4, 3.6, 4.8, 7.2, 9.6, 14.4, 19.2, 28.8, 38.4, 57.6, 76.8, 115.2 kbps
2% @ 19.2 kbps;
13% @ 115.2 kbps
DB25S
POWER
Requirements
Source
500 mA @ 6 VDC
Chassis backplane
PHYSICAL
Dimensions (in inches)
Weight (in pounds)
6.15 H x 0.8 W x 8.6 D
0.5
15
ENVIRONMENTAL
Operating Temperature
Storage Temperature
Relative Humidity
-40° C to 74° C
-55° C to 85° C
0 to 95% noncondensing
INDICATORS
SYNC, NOT SYNC, LBPK (loopback), LOOP
QUALITY
MTTF
Consult factory
16
TKH Security Solutions
www.tkhsecurity.com
Siqura B.V.
Zuidelijk Halfrond 4 • 2801 DD Gouda
The Netherlands
Telephone: +31 182 592 333
Fax: +31 182 592 123
E-mail: sales.nl@tkhsecurity.com
TKH Security Solutions USA
12920 Cloverleaf Center Drive • Germantown
Maryland 20874 USA
Telephone: +1 301 444 2200
Toll Free: +1 800 293 4237
Fax: +1 301 444 2299
E-mail: sales.us@tkhsecurity.com