(2) Manual (nonkeyboard ) control. the MANUAL TUNING control is
provided as an alternative to using keyboard numeric(s) for tuning
the receiver. The operator has the option of three different tuning
resolutions by using the MANUAL TUNING control in conjunction with a
selected COARSE, MEDIUM, or FINE key. MAN TUNE is automatically op-
erable except when sweeping or stepping, or when intentionally de-
The MAN TUNE key automatically lights and the mode
becomes active when in the AUTO SWEEP or AUTO STEP
mode of operation with the HOLD key pressed.
(a) Receiver frequency is controlled by rotating MANUAL TUNING
Tuning resolution is selected by pressing FINE,
MEDIUM, or COARSE key. The pressed key will light.
(b) To deactivate MANUAL TUNING control press MAN TUNE key.
Both MAN TUNE and FINE, MEDIUM, or COARSE key will go out.
c. Programmed Control Mode. The internal receiver control memory
has two volatile data files, which provide a total of 20 registers.
These registers provide storage for up to 20 different sets of re-
ceiver tuning and operating commands. Of these, 10 registers (AO
thru A9) comprise the data A file, and 10 registers (B0 thru B9) com-
prise the data B file. These registers are duplicated by the system
computer so that, in the event of system power loss, the computer is
able to reenter the receiver command data lost by the volatile re-
ceiver control internal memory. The receiver control operator may
change the contents of any register via the keyboard. This change
automatically updates the duplicate data files of the computer when
the STO key is pressed. The preprogrammed command data are recalled
for operator convenience or are used for programming a sequence of
receiver commands in the programmed auto-step mode of operation.
( 1 ) Command programming.
(a) Select desired tuning frequency by using keyboard nu-
meric(s). Observe that frequency selection is presented
on TUNING FREQUENCY (MHZ) display.
(b) Select desired operating commands from RECEIVER FUNCTIONS
keys. Observe that selected keys light.
(c) Press STO key and observe that it lights.
(d) Select desired data file by toggling DATA A/DATA B key
until appropriate light goes on.
|Integrated Publishing, Inc.|