HP E1411A Service Manual page 30

NOTE
Test Procedure
NOTE
30 Verification Tests
Line Freq Reference (CAL:LFR) ....50 Hz or 60 Hz
*RST sets Auto Zero to ON and Power Line Cycles to 1.
1.
Set the Resistance Standard to 1 k
2.
Set the HP E1411 range to 1861 (2048
with CONF:FRES 1861
Measure the input resistance with READ? and verify the results
3.
are within specified limits (at the range selected for 1 PLC). Record
the results on the Performance Test Record.
For best measurement accuracy, you may want to measure the ACTUAL
Resistance Standard value. You can do this by recording the front panel
display of the resistance value, or measuring the resistance with an HP
3458A multimeter or equivalent.
For example, suppose the ACTUAL resistance value for the 1 k setting is
1001.3 . Then, the Lower Limit for this value = 1001.03
Limit = 1001.57 . These limits would replace the existing limits of
999.730 and 1000.270
within the revised limits, the test passes.
Repeat steps 1 through 3 using the following Resistance Standard
4.
settings:
E1411 Range
119,156
1,048,576
Remove power and disconnect test equipment.
5.
setting
with 10% overrange)
shown in Table 4-1. If the measured value falls
10% Resistance
overrange Std Setting
131,052 100 k
N/A
and the Upper
1 M
Chapter 4