artisan TRACKPOINT 3 4211A, Operation And Maintenance Manual

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TRACKPOINT 3 OPERATION
3-59
Front panel LED’s Beacon Interrogation and Receive LED’s 1-4 represent TAM’s (chan-
nels) 1-4. TAM1 can represent up to 4 Beacons (1-4).
External Trigger Each channel has its own trigger input for Responder tracking. Channel
1 can also be externally triggered either as a Responder or as a Trans-
ponder in single target mode. (If external trigger is negative going, the
LED will be on constantly. E.g., a 10ms off pulse will not be seen.)
Internal Trigger Channel 1: Four separate interrogation Intervals, one for each beacon
when consecutively tracking but the Trigger Out on rear panel is on
Channel 1 only. The Channels 2, 3 & 4 each have their own internal
triggers but is limited to Responder mode only as Channel 1 controls
the Transmitter for acoustic interrogation.
Telemetry No limitation. All Beacons, except Pingers, can have their telemetry
enabled. (ECR-874 and later)
Beacon Interrogation Freq. For simultaneous tracking all the beacons must be interrogated at the
same frequency. E.g., beacon #1 interrogates the field of beacons all
at 17kHz. For consecutive (sequential) tracking then all Beacons (on
Channel 1 only) must be interrogated at different frequencies. E.g.,
17, 18, 19 & 20kHz.
Beacon Reply Frequencies For simultaneous tracking all the beacons must reply with different
frequencies. E.g., 23, 24, 25 & 26kHz. For consecutive (sequential)
tracking all Beacons can either reply with all the same frequencies or
different. E.g., all can reply at 23kHz or individually at 23, 24, 25 &
26kHz. (best if all different)