User's Manual

• It is not possible to determine if the valid detections were evenly distributed
or grouped together during the CRTO window
If CRTO is enabled, then Automatic Gain Control (AGC) is immediately
disabled, because gain must be fixed for the duration of a data record.
If CRTO is enabled, then the GPS 2D-positioning feature of the receiver is
disabled, but it still allows the GPS clock to function.
SETTING THE CRTO TIMEOUT
The CRTO Timeout specifies the amount of time the CRTO Window is open for.
The longer the timeout, the fewer records there are per transmitter detected.
For example, a CRTO Timeout of one minute for a Scan Cycle that has been
scanning for two minutes yields only two data records for each transmitter that is
detected over that two-minute period. This is because all detections during the
timeout period (CRTO Window) are compressed into one record when the
timeout expires.
If the CRTO Timeout for the example above was increased to four minutes, then
there would only be one record after the two-minute period. This demonstrates
the impact of a longer CRTO Timeout.
The timeout can be set from one minute up to 99 minutes.
EN AB L I N G /DI S AB L I N G AGC
AGC (Adaptive Gain Control) allows the receiver to optimize performance by
dynamically adjusting the antenna gain settings.
This feature is useful when you are experiencing sporadic external noise, such
as turbines coming on once a day at a hydro dam. If AGC is enabled, the receiver
can automatically adjust the gain when these noise events occur and then return
the gain to its original set value when the noise event is over.
Enable or disable AGC via:
CodeLog > 1)Config## > 2)Scan Settings > 3)Options > 3)AGC