Rev B
20
The available memory belongs to the scratchpad, and the reported size will vary
depending on the software version and on the current status of memory use by
other programs. Initializing the scratchpad will erase current scratchpad data only.
If you choose to continue, new scratchpad data will be appended to the existing
record.
The program will begin scanning the current active partition (active table). On
entry, the signal measurement strobe will be inactive. To activate it, press
SHIFT SIGNAL
The upper right quadrant of the display will show the lower and upper boundaries
of the time interval window and the arrow keys will control the window size. For
tracking, you will normally want to have access to gain or frequency control, so you
may use
SHIFT SET G
or
SHIFT SET F
to restore arrow key control of gain or frequency respectively, while leaving the
signal strobe active.
If you are using a set of isolating headphones, you will be able to hear very weak
transmitters before the receiver does (see
Example 2: Optimization
, below). You may
wish to turn the aircraft in the direction of the strongest signal to obtain a more
accurate position estimate, in which case you can stop the scan by pressing the
decimal point key
.
If the program has already scanned to the next frequency before you are able to
stop the scan, press
SHIFT SCAN
to assign the arrow keys to manual scan functions. Then press
DOWNARROW
to backup one frequency.
As you get closer to the signal, the receiver will start showing pulse interval and
relative signal strength on the bottom line of the display. You may use the signal
strength indication to guide the airplane, and to provide an indication of the point
where you have passed over the animal. When you have fixed the animal's location
to your satisfaction you may record its position in the scratchpad. Press
SHIFT F2
You will see a prompt:
AVAILABLE MEMORY 49746
1)INITIALIZE 2)CONTINUE
