E.F. Johnson Company 7780 Series, Preliminary Service Manual, Page: 36 / 116

TRANSCEIVER OPERATION
2-22
November 1999
Part No. 001-7780-500
2.7.4 CHANNEL CHANGE PARAMETER
The “CHAN CHG” menu parameter selects the
conventional channel to be reprogrammed. Disabled or
SMARTNET/SmartZone channels cannot be selected.
This does not change the channel selected for normal
operation.
Enter the channel number or scroll through the
programmed channels by pressing the and
keys. When the desired channel is displayed, select it
by pressing the
ENT key.
2.7.5 SYSTEM PARAMETERS
The “SYS PRM” menu parameter selects the
conventional mode timer to be reprogrammed (see
following). Press the
and keys to display the
desired timer and then press the
ENT
key to select it.
SCAN TMR - Selects the Scan Hold timer. Press
the
and keys to decrement/increment the
timer in 0.5-second steps, and press the “0” key to
disable the timer (set it to 0 seconds). When the
desired value is displayed, store it by pressing the
ENT key.
TX TMR - Selects the transmit time-out timer.
Press the
and keys to decrement/increment
the timer in 15-second steps, and press the “0” key
to disable the timer (set it to 0 seconds). When the
desired value is displayed, press the
ENT key to
store it.
PEN TMR - Selects the penalty timer. Press the
and keys to decrement/increment the timer
in 15-second steps, and press the “0” key to disable
the timer (set it to 0 seconds). When the desired
value is displayed, store it by pressing the
ENT
key.
CONV TMR - Selects the conversation timer.
Press the
and keys to decrement/increment
the timer in 30-second steps, and press the “0” key
to disable the timer (set it to 0 seconds). When the
desired value is displayed, store it by pressing the
ENT
key.
2.7.6 CHANNEL PARAMETERS
The “CHAN PRM” menu parameter selects the
conventional channel parameter to be reprogrammed
(see following). Press the
and keys to display
the desired parameter and then press the ENT key to
select it.
RX FREQ - Selects the receive channel frequency.
Press the
and keys to move the cursor left
and right, and press the 0-9 keys to enter a digit.
When the desired frequency is displayed, store it
by pressing the
ENT
key.
TX FREQ - Same as RX FREQ above.
RX CODE - Selects the receive Call Guard
(CTCSS/DCS) code. Press the “0” key to display
the first available code, and press it again to toggle
between types (CTCSS and DCS). Press the
and
keys to scroll through the available codes.
When the desired code is displayed, store it by
pressing the
ENT
key.
TX CODE - Same as RX CODE above.
TX POWER - Selects the desired power output
level. Press the
and keys to scroll through
the following choices. When the desired setting is
displayed, store it by pressing the
ENT key.
•
POWER HI - High transmit power
•
POWER LO - Low transmit power
•
POWER SW - Switchable power selectable by
the High/Low power switch. This choice is not
available if that switch is not programmed.
TX TMR - Enables or disables the time-out timer
on the current channel. Press the
and keys
to toggle between the on and off mode, and when
the desired setting is displayed, store it by pressing
the
ENT key.