DRAKE R8A - Clock and Timer Functions; TIME DISPLAY; SETTING THE 24 HOUR CLOCKS; TIMER OPERATION

25 Clock and Timer Functions
DRAKE F8A Communications Receiver
A-B CARR
vFo (A) =(B) TN) AGC(B) (F)
(ATTN)
A=B (NOTCH
AUTO AM SYNC
kHz 69 40 LSB USB
FIGURE 14
TIME DISPLAY
The receiver incorporates dual time clocks allowing two
24 hour clocks to be set and maintained. During loss of
AC power, clock operation is maintained for a period
of approximately 30 minutes. The two-event timer
functions are also derived from the last displayed clock,
therefore the clocks must be set first for proper TIMER
operation. TIMER Settings are maintained through a
power loss.
Pressing the CLK/FREQ function button will toggle the
display between the time of the current clock and the
operating frequency. Press the | * | button followed by
the button to toggle between the two clocks, L
and U. Normally the clock accompanied by the Lon
the display will be set with the local time, while the
alternate clock will be set to display GMT (UTC) time.
The receiver will display the selected clock when the
POWER is turned off.
SETTING THE 24 HOUR CLOCKS
Select local (L) or alternate time clock by pressing the
button followed by the button,
With the [fi] displayed, press and hold the [,™] button
for three seconds until the colons begin flashing rapidly.
If the L is illuminated, you are setting the local clock.
With U displayed, you are setting the alternate clock.
Either clock can be set first. Time is entered in a 24 hour
format.
Enter the time in ‘HH:MM:SS’, with the ‘colons’ under-
stood,
If an erroneous entry is made, simply enter the correct
time again. The incorrect entry will scroll off the display.
Press the button to start the clock when the
actual time value agrees with the entered time.
Example for Local Clock Set:
With either frequency or time displayed, suppose it is
desired to set 13:01:00 -
Press the al button, then press and hold the
button until the colons flash rapidly.
Press the following sequence of numeric buttons:
00:00:01 ' 00:00: 13 ' 00:01:30!
00:13:01 ' 01:30:10! 13:01:00!
When the actual time is 13:01:00, Press the button.
The clock is now started.
TIMER OPERATION
Two programmable event timers allow the receiver to
turn ON or OFF at preset times. The timers may be used
separately or together and may recall a currently
displayed frequency, memory channel or a combina-
tion of both. In addition, programming only an OFF
time provides a Sleep timer; programming only an ON
time provides a Wake timer. Note that the timers, when
activated, respond to the last displayed clock.
Programming the timers is a two step process, Step
one is to set the ON and OFF times. Step two is to
assign a frequency or memory channel to a timer. This
assignment occurs when the desired timer is actually
enabled,
SETTING TIMER ON/OFF TIMES
Press and hold the TIMER function button for approxi-
mately 2 seconds until the ON annunciator flashes, The
ON Time will also be indicated in the frequency portion
of the display (same readout format as the clock) as
well as the number 1 or 2 displayed to the left of the
ON annunciator, The number 1 or 2 indicates which
one of the two event timers you are programming.