MDS 05-2818A01, Rev. C
MDS P-60/P-60 HL Reference Manual
43
Connecting an Order Wire Handset
NOTE:
Order wire (voice) operation over data frequencies is not permitted
in all countries. Check the regula tions before connecting an Order
Wire handset to your system.
The radio equipment installed in the packaged system is normally used for data
(non-voice) transmission. Occasionally, however, it may be desirable to estab-
lish a temporary voice link to personnel at the master station to coordinate
installation or maintenance activities. This is accomplished with an “Order
Wire” connection.
Many packaged system Interface/Utility Boards have a modular tele-
phone-style jack that will accept an Order Wire handset (see
Figure 23
).
Table 7 on page 42
shows the appropriate jack number to use for each pack-
aged system model. Although many standard telephone handsets can be used
for Order Wire service, GE MDS offers a unit specifically intended for use
with its transceivers (P/N 12-1307A01). The Order Wire facility is not avail-
able on units equipped with an MDS 9000 Series Transceiver.
To use the Order Wire feature:
1. Plug the Order Wire handset into the modular jack on the
Interface/Utility Board. (See
Table 7 on page 42
for the appropriate
jack number.)
2. Key the transmitter by speaking into the handset (VOX).
MDS
P-60
w/Digital
Interface/Utility
Board
J1
(Modular)
J3 (Modular)
or
DB-25
connector
(SW2 used to
switch these
jacks in or out
of the circuit)
CR15—AC
power failure
indicator. (On
with battery
operation.)
CR12—
Transmitter
keyed
SW1—Red
button.
Used to
manually
key the
transceiver.
R13—Order
wire handset
1
MDS
P-50
w/Analog
Interface/Utility
Board
J11
(Modular)
N/A
(HHT must be
connected
directly to
transceiver)
CR8—AC
power failure
indicator. (DC
power indicator
with battery
operation.)
SW1—Red
button.
Used to
manually
key the
transceiver.
R2—RX audio
level
R19—TX audio
level
MDS
P-50
w/Digital
Interface/Utility
Board
J9
(Modular)
N/A
(HHT must be
connected
directly to
transceiver)
CR5—AC
power failure
indicator. (On
with battery
operation.)
CR4 Transmitter
keyed indicator
SW1—Red
button.
Used to
manually
key the
transceiver.
R19—Order
wire deviation
1
1.
These features are not available on units equipped with an MDS 9000 Series Transceiver.
2.
Control adjustment procedures are given in Chapter 5—Servicing Data.
Table 7. Interface/Utility Board Features & Indicators (Continued)
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