Replacement Parts - Fluke PM6685 Service Manual

– Select NULL by pressing s or t.
–
Press ENTER twice.
– Set the measuring time to 10 s.
–
Connect the 10 MHz reference to the input A of the counter.
Adjustment procedure
– Remove the seal from the front panel.
–
Adjust the potentiometer beyond the seal until the display
-3
reads 0.5 Hz or less.
–
Check that the value is stable over time, (more than 30 min -
utes).
– Cover the "CALIBRATION ADJUSTMENT" hole on the front
panel with a relevant seal if necessary.

Replacement Parts

Pos Description
Cover, (incl. front part).
Fan
Text plate kit
Rear plate
A1 Power supply
D1 LED, HLMP-1300, red
L1 Toroid
L2 Toroid
L3 Toroid
P1-P3 Cable kit
R1 Potentiometer, 1 kW
R2 Resistor 3.83 kW, 1% 0.5 W MRS25
NOTE: The rubidium time base (unit A2) must be sent to a
Fluke service center for repair. Follow the exchange
procedure.
9-14 Replacement Parts
Part Number P
5322 447 92194 P
2822 031 01327 R
4031 100 62440 R
4031 100 53930 P
5322 214 91268 P
5322 130 81921
5322 526 10545
5322 526 10545
5322 526 10545
4031 100 61530 P
5322 101 11298
4822 050 23832