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5820A
Service Manual
3-57. Pulse Period Verification
This procedure uses the following equipment:
Set the Calibrator Mainframe to the Pulse menu. Press on the Calibrator
Mainframe to activate the output. Then follow these steps to verify the Pulse period.
1. Set the PM 6680's FUNCTION to measure period on channel A with auto trigger,
2. Using the N to BNC cable, connect the CHAN 1 connector on the Calibrator
3. Program the Calibrator Mainframe to output the pulse width and period (at 1.5 V) as
4. Allow the PM 6680 reading to stabilize, then record the PM 6680 reading for each
Nominal Value
(V p-p)
1.5
1.5
1.5
3-58. MeasZ Resistance Verification
The MeasZ resistance function is verified by measuring resistors of known values. The
measurement value is then compared to the resistor actual value.
The resistors must make a solid connection to a BNC(f) to enable a connection to the end
of the N to BNC cable supplied with the Scope Calibrator. The resistance values must be
known at this BNC(f) connector. Fluke uses an HP 3458A DMM to make a 4-wire ohms
measurement at the BNC(f) connector to determine the actual resistance values.
This procedure uses the following equipment:
Set the Calibrator Mainframe to the MeasZ menu. Follow these steps to verify the
MeasZ resistance function.
1. Set the Calibrator Mainframe MeasZ resistance range as indicated in Table 3-26.
2. Using the N to BNC cable, connect the CHAN 1 connector to the BNC(f) connector
3-56
PM 6680 Frequency Counter with an ovenized timebase (Option PM 9690 or
PM 9691)
N to BNC cable supplied with the Scope Calibrator
DC couple, 50
impedance, and filter off.
Mainframe to PM 6680 channel A.
listed in Table 3-28.
period listed for the Calibrator Mainframe.
Table 3-28. Pulse Generator Verification: Period
Pulse Width
(s)
-9
5.0 x 10
-9
500 x 10
-9
500 x 10
Resistors of known values: 1.5 M , 1 M , 60 , 50 , 40
adapters to connect resistors to BNC(f) connector
N to BNC cable supplied with the Scope Calibrator
(The blue softkey under MEASURE toggles the MeasZ ranges).
attached to the nominal resistance values indicated in Table 3-26. The 600 K
nominal value can be achieved by connecting the 1.5 M
parallel.
Period
Measured
(s)
Value (s)
-9
200 x 10
0.01
0.02
Deviation
1-Year Spec.
(s)
(s)
66 x 10
3.3 x 10
6.6 x 10
nominal
and 1 M resistors in
-15
-9
-9
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