External Orderwire Module - GE MDS 4710A Technical Manual

MDS 05-3305A01, Rev. E
Software upgrades are distributed as ASCII files with an ".S28" exten-
sion. These files use the Motorola S-record format. When the download
is activated, the radio's
download is in process. The download takes approximately 2 min.
NOTE: If a download fails, the radio is left unprogrammed and inop-
erative. This is indicated by the
sec on/1 sec off). This condition is only likely if there is a
power failure to the computer or radio during the downloading
process. The download can be attempted again when the fault
is corrected.

6.6 External Orderwire Module

During installation or troubleshooting activities, it is desirable to com-
municate by voice between personnel at the Master Station and the
Remote Station sites to coordinate their activities. An optional external
orderwire module from GE MDS (P/N 12-1297A01) is available that
can be inserted between the radio's DATA INTERFACE and the user's
data communication device.
HANDSET JACK
RED = ORDERWIRE ACTIVE/ TX KEYED
Figure 16. Orderwire Adapter Module
Installation
Install the Orderwire (O/W) Module between the radio transceiver's
DATA INTERFACE
connector and the connected device. A handset
should also be connected to the associated Master Station's orderwire
jack.
The payload data exchanges pass through the Orderwire Module unin-
terrupted until the Orderwire Module is in use. The module has a
voice-operated switch (VOX) that keys the connected transceiver when-
ever audio is picked up by a handset plugged into the RJ-11 phone jack.
Any standard telephone handset can be used, or a rugged handset (P/N
MDS 4710/9710 Technical Manual
PWR
LED flashes rapidly to confirm that a
PWR
Invisible place holder
TO RADIO DATA DEVICE
TO RADIO TRANSCEIVER
)
(MDS P/N 12-1307A01
LED flashing slowly (1
41