Radio Systems, Inc.
CT-2002 Manual
Page 1
Operation
1... After.all.connections.are.made,.apply.power..The.unit.will.take.from.1.to.15.
minutes.to.acquire.the.satellite.data..During.this.initial.acquisition.period,.
and.during.any.subsequent.periods.of.satellite.data.loss,.the.GPS.Master.unit.
will.display.one.of.5.error.codes..These.codes.and.their.meanings.are.listed.
below..
2... After.acquisition,.the.true.time.will.display.and.will.be.serially.relayed.to.any.
digital.display.units.“downstream”..If.data.is.lost.at.any.time.in.the.future,.
downstream.display.“data”.lamps.will.extinguish,.but.these.clocks.will.con-
tinue.to.run.on.their.internal.time.base..On.satellite.reacquisition,.the.time.
will.be.updated,.and.the.“data”.lamps.re-illuminated..
3... Front.panel.master.GPS.controls.cannot.be.used.to.set.or.change.the.digitally.
displayed.time-of-day,.but.the.time.mode.may.be.used.to.adjust.the.time.on.
any.analog.clocks.connected,.and.the.START,.STOP.and.RESET.switches.may.
be.used.in.the.timer.mode..See.the.“Analog.Clock.Connection.and.Use”.sec-
tion.for.operating.details..
GPS Error Codes
These.two.digit.error.codes.will.display.in.the.GPS.Master.readout.in.the.center.
two.digits.on.unit.turn-on.(pre-satellite.acquisition).and.during.any.data.outage.
Error Code
1-Pulse Per Second Serial Data Data
. 01.(1.PPS.line.broken)..
not.present.
present.
okay.
. 02.(satellite.acquisition.lost)..
present.
present.
bad.
. 03.(fire-up.status.-.first.1.to.15.minutes)..not.present.
present.
bad.
. 04.(corrupted.serial.data.output)..
present..
not.present.
bad.
. 05.(no.antenna.connection).
not.present..
not.present.
bad.