Service manual

OPERATION
3-4
April 2001
Part No. 001-9800-203
Microphone Jack - Connection point for the micro-
phone and also the RPI programming interface when
programming the transceiver.
Microphone Push-To-Talk (PTT) Switch - Keys the
transmitter.
Speaker - A speaker is located behind the grille. An
optional speaker can be connected to the external
speaker jack described in Section 3.2.3. The internal
speaker is disabled when an external speaker is used.
Option Switches
As previously mentioned, all high tier option
switches are programmable, and the functions that can
be programmed are as follows. Refer to Section 3.6 for
more information on option switch and menu
functions:
• Add/delete (system and group scan list prog)
• Call Guard squelch disable
• Emergency
• Encryption
• Function (see following description)
• Horn alert
• Monitor
• Option (dealer installed)
• Priority sampling (conventional only)
• Scan on-off
• Stealth mode select
• Talk-around (conventional only)
• Not used (disabled)
3.2.3 REAR PANEL JACKS AND
CONNECTORS
Antenna Jack - Miniature UHF jack for connecting
the antenna.
Power Jack - Connection point for a nominal 12-volt,
negative ground power source.
Speaker Jack - Connection point for an external
4.7-ohm, 5-watt speaker. The internal speaker is
disabled when a speaker is connected to this jack.
Accessory Cable (Not Shown) - This optional pigtail
cable installs in the speaker jack opening and is used
to connect the ignition sense, horn alert, and other
outputs (see Section 2.4).
Data Cable (Not Shown) - This optional cable also
installs in the speaker jack opening, and it is used to
connect data equipment such as a modem to the trans-
ceiver (see Section 2.7).
3.3 DISPLAY DESCRIPTION
3.3.1 LOW TIER DISPLAY
Figure 3-3 Low Tier Display and Indicators
Channel Display - This 1.5-digit LED display indi-
cates the selected system (channel) from 1-16. It also
indicates certain error conditions. The left digit
can display only “1” as shown above.
Transmit Indicator (Red) - Indicates that the
transmitter is keyed.
Call Indicator (Yellow) - Indicates that a call has
been received on a channel programmed for a call
indicator (see Section 3.5.3). To turn this indication
off, press any key.
Scan Indicator (Green) - Indicates that system scan-
ning has been enabled (see Section 3.7).
""- Indicates that scanning is occurring.
""- Indicates that the displayed system/group
(channel) is not
in the scan list (not scanned).
Antenna
Jack
Ext. Speaker
Jack
Power
Jack
Transmit (Red)
Call (Yellow)
Scan (Green)
Scan List Status
Scan Occurring
Channel
(System)
No.
AUX1
AUX2
+
–