GE MDS Master Station Setup Manual page 5

format, depending on how the device is configured. The unit supports
data rates of 300, 1200, 2400, 4800, 9600, 19200, 38400, 57600, and
115200 bps (asynchronous data only).
This connector mates with a standard RJ-45 plug (see Figure 8) availa-
ble from many electronics parts distributors.
Pin Descriptions—RS-232 Mode
Pin descriptions for the COM connector in RS-232 mode are shown in
Table 6
Table 5 and Table 6 on the following page. Note that the unit
is hardwired as a DCE device. Refer to the Technical Manual for RS-
422/485 descriptions. (Note: RS-485 supported on COM2 only.)
Figure 8: COM Connector (RJ-45)
As viewed from outside the unit
Table 5: COM1 Pin-out - Default Data Port
Pin Input/ Pin Description
# Output
1 OUT DSR (Data Set Ready)
2 OUT DCD (Data Carrier Detect)
3 IN DTR (Data Terminal Ready)
4 Ground Connects to chassis ground (negative supply)
5 OUT RXD (Received Data)—Supplies received data
to the connected device
6 IN TXD (Transmitted Data)—Accepts TX data
from the connected device
7 OUT CTS (Clear to Send)
8 IN RTS (Request to Send)
Table 6: COM2 Pin-out - Default Console Port
Pin Input/ Pin Description
# Output
1 Reserved -- (Do not connect)
2 Reserved -- (Do not connect)
3 Reserved -- (Do not connect)
4 Ground Connects to chassis ground (negative supply)
5 OUT RXD (Received Data)—Supplies received data
to the connected device
6 IN TXD (Transmitted Data)—Accepts TX data
from the connected device
7 OUT CTS (Clear to Send)
8 IN RTS (Request to Send)
05-6398A01-GB, Rev. A MDS Master Station Setup Guide
ALARM/AUDIO PINOUT
The ALARM/AUDIO Interface on the Alarm/Relay module provides au-
dio signaling and alarm outputs as shown in Figure 9. Note: PTT, Ana-
log RSSI, and Audio connections are only available when used with
SD interfaces.
+12v
6
PTT
5
Rx Audio -
4
Rx Audio +
3
Tx Audio - 2
Tx Audio +
1
Figure 9: Alarm/Audio Connections
(As viewed from front of the Alarm/Relay module)
TROUBLESHOOTING
If trouble occurs with the unit, verify that it meets the basic require-
ments listed below. These items should be checked prior to starting
any detailed troubleshooting or calling for assistance. All units must
have:
•
Adequate and stable primary power
•
Secure cable and wiring connections
•
Proper configuration for the application
LEDs
The LEDs on the front of installed modules (Table 4) provide useful in-
formation when troubleshooting. Power and alarm indicators are pro-
vided on Platform Manager, Radio, and Alarm/Relay modules. Radio
Modules also have TX/RX LEDs to show wireless activity.
Redundant Units
The active radio can be identified by the corresponding LED on the
alarm/relay module as well as the active LED on the radio module. The
active unit is normally selected automatically. For troubleshooting, the
toggle switch can be used to manually set the active radio. Alterna-
tively, the switch can remain in the automatic position and the active
radio can be selected via the Device Manger UI.
Technical Assistance
Factory technical assistance is available by contacting GE MDS during
business hours (8:30 AM to 6:00 PM Eastern Time). For telephone as-
sistance, call (585) 241-5510, or visit our website at www.gemds.com
for additional contact options.
Analog RSSI
  12
Major Alarm Contact
  11
Major Alarm Contact
  10
Minor Alarm Contact
  9
8 Minor Alarm Contact
 
Ground
  7
Invisible place ho
5