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TRC-70
24
CIRCUIT DESCRIPTION
Operation Mode
The operation mode
consists of user and dealer
modes.
They differ in specifications for reset and
memory channel entry.
Memory
channel operation
will be described first.
¢ User mode
This mode is selected by users.
A memory channel
cannot be written in the user mode.
If functions are
set with a DIP switch, a receiving frequency can be
written into the memory.
* Dealer mode
This mode is used when dealers write the transmit-
ting and receiving frequencies assigned to users into
the memory channel.
The mode is returned to the
user mode to give the set to the user after write is
completed.
Setting of Functions by Diode Removal
As Table 8 outlines, functions can be set with di-
odes
D311
through
D313
of the control unit (X53-
3280-21).
Function setting
. Set the POWER switch to OFF.
. Set the diode corresponding to the desired function.
. Set the POWER switch to ON.
WN
¢
«
Description of table 8
The memory channel number appears on the 3-digit
display panel (See Figure 25.) When D311 is removed,
the memory channel number appears on the 4-cigit
display panel (See Figure 26.)
When D312 is removed, the dial mode can be set.
In the dial mode, the desired frequency can be set
with the channel selector.
To enter the dial mode,
perform the following:
1. Press the C key.
2. Enter 84 from the numeric keypad.
3. Press the ENT key.
When the POWER
switch is set to OFF, the dial
mode
is canceled.
To cancel the dial mode without
setting the POWER switch to OFF, perform the follow-
ing:
:
1. Press the C key.
2. Enter 85 from the numeric keypad.
3. Press the ENT key.
When D313 is removed, a frequency can be sent in
the dial mode during the dial mode setting outlined
above.
Table 8 Setting of Functions with diodes
|
7H] J3E USB
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Cu
4
—
digit display
Fig. 25 Three-digit display
(Example : Memory channel number 20)
Fig. 26 Six-digit display
(Example : Memory channel number 20)
Setting Functions with DIP Switches
*
Function setting
, Set the POWER switch to OFF.
2. Set the DIP switch corresponding to the desired
function.
3. Set the POWER switch to ON.
=
¢
Description of table 9
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