MDS LEDR 1400F, Installation & Operation Manual

Page: 108 / 154

100 LEDR Series I/O Guide MDS 05-3627A01, Rev. D
9.3 Operation
1. Plug the handset into the front panel jack labeled . ( Figure 32
on Page 127 provides pinout details for this connector.)
2. Press or at the menu’s top level until
Orderwire
appears on
the LCD display. Press to move to the lower levels of the menu.
3. To call a specific radio station, enter the Unit ID number for the sta-
tion to be called. (At this point, an alert signal (“ring”) will be sent
to earpiece of the handset connected to the “called” station.
4. Simply speak into the handset to initiate transmission. The transmit-
ter will be dekeyed when you stop speaking. The VOX level must be
properly set for this function to work. (
See “vox” on Page 88 .)
5. Alternatively, a DTMF-style handset can be used to “dial” the
required radio station.
6. Remember, regardless of the number of users, only one may speak
at a time.
NOTE:
The LEDR radio has a built-in DTMF decoder in the orderwire
circuitry. If a standard DTMF telephone test set is plugged into
the orderwire, the user can dial in the three digit unit address
on the handset to “ring” the earpiece of the handset of the asso-
ciated LEDR unit.The LEDR chassis will not provide power to
ring a standard bell or electronic ringer.
Invisible place holder
Figure 20. Orderwire Connection with MDS 12-1307A03 Handset
ENTER