E.F. Johnson Company 761X, Руководство по обслуживанию, Страница: 16 / 99

INSTALLATION AND DISASSEMBLY
2-5
November 1998
Part No. 001-7600-001
2.7 2-TONE/5-TONE MODULE INSTALLATION
2.7.1 INSTALLATION PROCEDURE
1. Turn power off and disconnect the power cable.
2. Remove the bottom cover by removing the four
screws (A) shown in Figure 2-5.
3. Install the module as shown in Figure 2-7. The
included foam pad is not used with this transceiver.
Figure 2-7 2/5-Tone Module Installation
2.7.2 2-TONE PROGRAMMING
Program the transceiver for operation with a two-
tone decoder as described in Section 4. Screens that
need to be programmed with two-tone decoder infor-
mation are as follows. Refer to on-line help for more
information on parameters in these screens (press F1
with parameter selected).
Model Menu - “LMR” must be selected (see
Section 4.4.6).
Screen Menu - Select “2Tone Code CH” and
program the information in the screen (see
Table 4-6).
Screen Menu - Select “Memory Channel” and pro-
gram the information under “2Tone Dec” for
each channel on which the decoder will be used
(see Table 4-1).
Screen Menu - Select “Key & Display Assign” and
program an option key or the microphone hanger
for the monitor function so that the decoder can
be re-activated when the call is complete (see
Table 4-2).
2.7.3 5-TONE PROGRAMMING
Program the transceiver for operation with a five-
tone module as described in Section 4. Screens that
need to be programmed with five-tone decoder infor-
mation are as follows. Refer to on-line help for infor-
mation on parameters in these screens (press F1 with
parameter selected).
Model Menu - “PMR” must be selected (see
Section 4.4.6).
Select the following in the Screen Menu:
•
“Rx Code CH” and program the information in
the screen (see Section 4.5.2).
•
“Tx Code CH” and program the information in
the screen (see Section 4.5.2).
•
“User Tone” and program the information in the
screen (see Section 4.5.2).
•
“Memory CH” and program the parameters in
this screen that are related to 5-tone operation on
the channel (see Figure 4-2).
NOTE: If performing the deviation adjustment in
the next section, the long tone must be turned on in
RPT/STN/ID on the Memory Channel screen.
•
“Key & Display Assign” and program Tx Code
and Call switches for use in transmitting 5-tone
codes.
Setting 5-Tone Deviation
The only adjustment on the 2/5-tone module is a
potentiometer for setting the transmit tone deviation
for 5-tone operation. This control is factory preset and
should not require readjustment in the field. However,
if adjustment is required, proceed as follows: