User's Manual

Rev B

or, in versions supporting individual antenna or channel gains,

(where XX is the current value) and then waits until it receives two numeric inputs from the

keypad. Shifted or non-numeric keys (except

ESC) are ignored. The system gain is then set

according to the received two-digit value. Pressing the

ESC (escape) key causes the function to

abort without updating. On exit, the command display (frequency and gain) is restored.

The

UPARROW key is used to increment the value of a selected variable (normally

frequency, gain or scan time) by a selected amount. The variable is selected by

whichever of the

SET G, SET F, or SET SCAN keys were most recently activated. The

increment amount is the last value entered using the

SET ∆ function. The UPARROW is also used to

confirm real number entries (e.g., sensor calibration values). See also the discussion of the arrow

keys in the

SCAN mode.

The

SET F key activates a function which permits programming of the receiver operating

frequency.

SET F first issues a prompt:

and then waits until it receives input from the keypad in the form of a 6-digit decimal number (5

digits in 30 - 70 MHz versions) representing the receive frequency in MHz (megahertz). It then

sets the receive frequency by programming the frequency synthesizer. If the requested frequency

is out of range of the hardware it may, depending on the receiver configuration, be automatically

limited to a minimum or maximum value. Pressing the

ESC (escape) key causes the function to

abort without updating. On exit, the command display (frequency and gain) is restored.

The

SET SCAN key sets the dwell time for the SCAN and SEARCH functions. It issues a

prompt:

and then waits until it receives five numeric inputs (0 to 9) which it automatically formats as

X:XX.XX (minutes:seconds.hundredths). Shifted or non-numeric keys (except

ESC) are ignored.

The scan time is then set according to the received five-digit value. Pressing the

ESC (escape) key

causes the function to abort without updating. On exit, the command display (frequency and

gain) is restored, with the scan time now appearing in the lower left quadrant.

ENTER GAIN (00-99)

MASTER GAIN (XX)

SET F

ENTER FREQUENCY

SET SCAN

ENTER SCAN TIME