User's Manual

The SIGNAL key controls the Suretrack's pulse interval and signal strength measurement

functions. All of these functions except Power Graph are also available in the SCAN

environment. This example illustrates the use of SIGNAL functions for a single frequency.

First, from the command environment, set a frequency using

SHIFT

SET F

with appropriate five or six digit data entry. Then press

SHIFT

SIGNAL

and, at the menu, press 2 to select the Interval routine.

If a signal is present, the bottom line of the display will show the pulse interval (repetition

period) in milliseconds (in configurations two and three), relative signal strength and two status

characters. These are an expanding "strobe" which follows the signal pulses and a letter (G or F)

which gives the status of the arrow keys (control of gain or frequency). You may use the arrow

keys to increment/decrement gain or frequency while the Interval routine is running.

To determine the noise floor for your environment, start with a low gain (try 50) and watch the

strobe while slowly increasing the gain using the upward arrow key. For this measurement it is

easier if their are no transmitters running, and it is usually advantageous to have your gain

increment set to 1. If you haven't done this, observe the following.

PROCEDURE: SETTING THE GAIN INCREMENT

If you are not in the command environment you must first return there. From the

SIGNAL/Interval routine, for example, press

ESC

to leave Interval and SIGNAL respectively.

If you were adjusting gain in the SIGNAL environment you are ready to set the gain increment.

If not, you must perform a

SET G operation. You may do this without specifying any new value

of gain. Press

SHIFT

SET G

ESC

Arrow keys and SET ∆ now control gain. Now press