Service manual

OPERATION
3-15
Revised February 1997
Part No. 001-9750-005
To initiate changing from one bank to another, the
BANK option switch or Menu mode “BANK SELCT”
parameter is used. The Select switch is then turned to
move to the desired bank and pressed to select that
bank. The current bank is identified by the unique
identification which temporarily appears in the alpha-
numeric display when the switch is pressed or the
menu parameter selected. For example, “CHICAGO”
and “ST LOUIS” could be displayed to identify the
banks used for those cities.
Each bank can be programmed so that either the
last selected or home system/group is displayed when
the bank is selected or power is turned on. To have this
feature, transceiver software Version 216 or later and
programming software Version 205 or later are
required. With earlier versions, the last selected
system/group is always displayed.
3.6.7 POWER TURN-OFF DELAY
The transceiver can be programmed so that the
vehicle ignition switch as well as the front-panel power
switch controls transceiver power. With transceiver
operating software Version 205 or earlier (see
Appendix A), turn-off delays of Immediate, 10, 20, 30,
60, 120, or 240 minutes or Forever (no turn off) can be
programmed. With Version 206 or later, delays of
Immediate, 10 or 30 minutes, 1, 8, 10, or 12 hours or
Forever can be programmed. The delay can be canceled
at any time by turning power off using the front-panel
switch or turning the ignition switch back on.
A delay allows features such as the horn alert and
call indicator to remain active for the programmed
delay time after the ignition switch is turned off. At the
same time, advantages of ignition switch control can
be utilized such as preventing battery discharge that
may result if the transceiver is accidentally left on.
3.6.8 EMERGENCY CALLS
Introduction
The EMER (emergency) option switch is used to
manually or automatically place a high-priority call.
When this switch is programmed, it is the switch on
the left side of the display because that switch is
designed to make it less likely to be pressed acciden-
tally. An external switch, such as a foot-actuated type,
can also be used (see Section 2.4.6).
The general operation of Emergency Calls is
described in Section 5.8.11. The two basic operating
modes of the emergency switch are Manual Transmit
and Automatic Transmit. Multi-Net systems can be
programmed for either type; LTR and conventional
systems can be programmed for the manual type only.
When the Emergency switch is pressed, “EMER-
GENCY” and the group identification are alternately
displayed (unless the display of this message has been
disabled by programming). The transceiver then looks
at the emergency call information programmed in the
currently selected system (or revert system if system
scanning). If there is no emergency information
programmed in that system, it looks at the default
emergency information programmed for that bank. It
then switches to the specified emergency system/
group. Operation from this point is controlled by
Manual/Automatic programming. Operation in those
modes is as follows:
Manual Transmit
Automatic transmissions do not occur in the
manual mode. However, this mode minimizes, as
much as possible, the chance that the system will be
busy when a call is placed. The transceiver locks on
the emergency system/group (other system/groups
cannot be selected), scanning is disabled, and all trans-
missions occur at access priority 1 (except on LTR and
conventional systems which do not use access
priority). The only calls received are those occurring
on the emergency system/group or “all calls”. Calls on
the selectable, fixed priority, and block ID codes of
that system are not received.
Other mobiles may also join in the conversation,
either by selecting the emergency mode or selecting
that system/group. In this case, all rules of normal
transmission and reception apply. To exit the emer-
gency mode and resume normal transceiver operation
after the emergency call is completed, transceiver
power is turned off and then on again.
Automatic Transmit
When the Emergency switch is activated with
Automatic Transmit programmed, system and group
selection and scanning are disabled and the transceiver
begins automatically transmitting the Emergency Alert
call. This call is transmitted on the programmed emer-