Fluke 6135A/PMU, Руководство оператора

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6135A/PMU
Operators Manual
1-16
Table 1-8. The Timing Unit Connections
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gtu027.emf
Item Name Description
 GPS Antenna Out GPS Antenna signal output to the UUT.
 1PPS Out
1PPS signal output to the UUT. The signal is set to pulse on the
UTC second from the GPS Receiver.

IRIG-B Out IRIG-B GPS signal output to the UUT.
The Status Indicator LEDs on the front of the Timing Unit shows the communication
status of Timing Unit and the equipment connected. See Table 1-9 for information on the
Timing Unit Status Indicator LEDs.
Table 1-9. Timing Unit Front-Panel Indicator LEDs
Name LED Indications Description
IRIG Present
On = Connected to IRIG.
Off = Not connected to IRIG.
LED illuminates when the Timing Unit senses
an IRIG signal from the GPS Receiver.
GPS Clock
Available
On = Connected to 10 MHz Clock.
Off = Not connected to 10 MHz Clock.
LED illuminates when the Timing Unit senses a
10 MHz Clock signal from the GPS Receiver.
REFP Active
On = Connected to Phase Ref Input.
Off = Not connected Phase Ref Input.
LED illuminates when the Timing Unit senses a
Phase Ref Input from the 6135A System.
Phase Locked
to Nominal
On = Locked to 1PPS Reference Signal.
Off = Not locked to 1PPS Reference
Signal.
LED illuminates when the Timing Unit is locked
to the 1PPS reference signal from the GPS
Receiver.
Host Activity
Flashing = Data transfer to Server PC.
Off = No data transfer to Server PC.
LED is a visual indication of data sent between
the Server PC and the Timing Unit. The Host
Activity Indicator light will flash when data is
sent or received.
One PPS
Flashing = Read UTC time OK.
Off = Not reading UTC time.
LED is a UTC time visual that flashes on each
UTC second.
Status
On
= Calibrator OK.
Off
= Calibrator not on or not OK.
LED is a visual indication of the Calibration
Systems status. If the Timing Unit is functional,
the light will flash in a simulated “heartbeat”
pattern. If the light is solid on or off and not
flashing, this could be an indication that your
system has malfunctioned. Refer to the
troubleshooting chapter in this manual for more
information.
AUX Indicator
Flashing = Lost connection to Server PC.
On = Unit is in Manufacturing Test Mode
(factory use only).
LED is a visual indicator that shows if the
Timing Unit has lost connection to the Server
PC. This LED is used for troubleshooting.