CSI FIBERLINK 5002, Руководство пользователя

Страница: 6 / 8

4
OPERATING POINTERS FOR THE 5002
POWER: The 5002 can obtain all of its operating power
through the RS-232 port to which it is connected
or through the power connector. Power is applied by
connecting pin 9 of the DB-25 connector or the center
pin of the power jack to a +12 VDC (+ 10%) power
supply and pin 7 of the DB-25 connector or the shell
of the power jack to the 12 volt return.
FIBER OPTIC CABLE: The 5002 is designed to operate with 62.5micron core
diameter multimode fiber optic cable. The maximum
transmission length will depend on the optical
attenuation of the cable used. In most cases the unit
is capable of transmitting signals over distances of
greater than 2 miles. Always be certain that when
connecting two units together, the “T” port of one is
connected to the “R” port of the other.
OPERATING MODE: In the point-to-point mode, the unit functions as
a simple full duplex transceiver. In the drop-and-
repeat mode, any one unit (at a time) can input
data. All units will output data simultaneously. In
this mode, one unit must be set to the non-repeat or
point-to-point mode to prevent loop lock-up.
Thisunit is usually connected to the host or loop
controller.
5
INTERFACE TROUBLESHOOTING
The following tabulation indicates what to look for if the system does not operate
properly. It assumes that correct operating power (12 VDC) has been applied to either pin
9 of the DB-25 connector or to the coaxial power connector (not both).
5002 set to DTE and transmitting data
5002 set to DTE and receiving data
Pin Description Condition
1 Chassis Ground (input/output) 0 VDC
2 Transmitted Data (input) Pulses at data rate
3 Received Data (output) Undetermined
4 Request to Send (input) Connected to pin 5
5 Clear to Send (output) Connected to pin 4
6 Data Set Ready (output) Connected to pins 8/20
7 Signal Ground (input/output) 0 VDC
8 Data Carrier Detect (output) Connected to pins 6/20
20 Data Terminal Ready (input) Connected to pins 6/8
Pin Description Condition
1 Chassis Ground (input/output) 0 VDC
2 Transmitted Data (input) Undetermined
3 Received Data (output) Pulses at data rate
4 Request to Send (input) Connected to pin 5
5 Clear to Send (output) Connected to pin 4
6 Data Set Ready (output) Connected to pins 8/20
7 Signal Ground (input/output) 0 VDC
8 Data Carrier Detect (output) Connected to pins 6/20
20 Data Terminal Ready (input) Connected to pins 6/8