User's Manual

Guide to the SRX800 Receiver Preliminary
to the next frequency and antenna (depending on the scan priority that was
selected).
TOA can be enabled in conjunction with other settings like Frequency
Priority, Antenna Priority, and Master Antenna Preview.
If TOA is disabled, the SRX800 scans each frequency and antenna combination
for exactly the specified scan time before switching to the next frequency and
antenna combination.
EN AB L I N G /DI S AB L I N G CRTO
CRTO (Continuous Record Time-Out) is used to save memory space. CRTO
gives the receiver the ability to track the number of valid detections for each
transmitter ID in combination with a specific frequency and antenna over a fixed
period of time (CRTO Window). The CRTO Window is defined by the CRTO
Timeout (see Setting the CRTO Timeout below).
When the CRTO Window expires, the receiver stores a single record for every
transmitter that was received. The record uses this format: Transmitter X on
Frequency A and Antenna E was detected N times with an average Signal
Strength of S. If the transmitter involved is a sensor transmitter, then the average
value of the sensor data over the CRTO Window is also provided.
Before enabling CRTO, be aware of these points:
• The receiver waits until the first valid detection is made before it opens the
CRTO Window. This allows the resulting data record to be stamped with the
arrival time of the first valid detection.
• When the CRTO Window elapses, the time of the first valid detection is
recorded along with the duration information, which refers to the total
amount of time between the first and last detections for each
transmitter/frequency/antenna combination.
• If a transmitter/frequency/antenna combination is detected several times
during the CRTO time period, then the exact time of every detection for that
transmitter is not recorded