Service manual

OPERATION
3-34
April 2001
Part No. 001-9800-203
SYS SRCH - LTR system search
• ON or OFF
TALKARND - Conv. talk-around mode select
• ON or OFF
TONES - Tone type select
• SILENT - No tones sound
• KEY BEEP - Only the Select switch (high tier
only) and key press tones sound
• ALERT - All tones except preceding Key Beep
tones sound
• ALL TONE - The preceding Key Beep and
Alert tones sound
3.11 TEST MODE
3.11.1 HIGH TIER OPTION SWITCH
IDENTIFICATION
Option switches are used in the test mode to
select various functions. Since all five switches are
programmable with high tier models, the labels may
vary. Therefore, they will be referred to by the
numbers indicated in the following illustration.
High Tier Option Switch Numbering
3.11.2 ENTERING TEST MODE
The test mode is selected by turning power on
with the following option switch(es) pressed:
Low Tier Models - A/D switch
High Tier Models - Switches “2” and “3”
NOTE: The test mode cannot be selected by turning
power on with the TxD and RxD lines of the micro-
phone connector shorted together.
When power comes up in the test mode, the last
Channel (low tier) or System and Group (high tier)
selected in the test mode is displayed. In addition, with
the high tier only, the bottom line indicates the soft-
ware version number as “00312xx0” (see Section
3.12.4). To display the frequency on the bottom line
(and the next channel), rotate the Select switch one
click or press the PTT switch.
3.11.3 EXITING TEST MODE
To exit the test mode, turn radio power off and on
without any front panel switches pressed.
3.11.4 TEST MODE DEFAULT CONDITIONS
The radio goes into the following conditions
when powered up in test mode:
• Test Channel - Last Selected (System 1-16)
• Test Modulation - Last Selected (Group 1-7)
• Receiver is on and in carrier squelch mode
• Transmitter is off, set for high power
• Channel bandwidth is set to 25 kHz
• Selector switch defaults to system select.
3.11.5 TEST CHANNEL SELECTION
When in test mode, 16 programmable test
frequencies are available. Test frequencies are selected
by the System (Channel) select function in the normal
manner. Test channels are programmed using the PC
programmer (see Section 4.6.2). If the default test
frequencies are not changed, the channels shown in
Table 3-4 are programmed.
3.11.6 MODULATION SELECTION
Low Tier Models
In the test mode, various modulation schemes are
chosen by pressing the A/D switch and then the CHL
up/down switches. The modulation select mode is
indicated by “+” in the display. A modulation mode
remains selected as long as the test mode is selected
(even if the channel is changed or power is cycled).
The modulation type selected by each display number
is shown in Table 3-3.
Sw 1
Sw 3
Sw 5
Sw 2 Sw 4
Sq Adj (once)
Soft Ver (twice)
Power Sel LCD Test
Talk-Ard
Bndwdth