Service manual

Test Procedure 1. Set the Resistance Standard (Datron 4708, Option 30) to 1 kΩ
setting.
2. Set the Agilent E1326B range to 1861Ω (2048Ω with 10% overrange)
with CONF:FRES 1861.
3. Measure the input resistance and verify the results are within
specified limits (at the range selected for 1 PLC).
NOTE
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 measure the resistance with an Agilent
3458A multimeter or equivalent.
For example, suppose the ACTUAL resistance value for the 1 kΩ setting is
1001.3 Ω. Then, the Lower Limit for this value = 1000.9 Ω and the
Upper Limit = 1001.7 Ω. These limits would replace the existing limits
of 999.6 Ω and 1000.4 Ω shown in Table 4-1. If the measured value falls
within the revised limits, the test passes.
4. Repeat steps 1 through 3 using the following Resistance Standard
settings.
E1326B
Range
10%
overrange
Resistance
Std Setting
119,156Ω
1,048,576Ω
131,052Ω
N/A
100 kΩ
1 MΩ
5. Remove power and disconnect test equipment.
Example: 4-Wire
Ohms Test
This example performs a 4-wire ohms resistance test for a power line
reference frequency of 60 Hz. Change line 80 to OUTPUT
70903;"CAL:LFR 50" for 50 Hz operation.
The program also calculates the Upper Limit and Lower Limit values
for the ACTUAL Resistance Standard resistance value (lines 170 -190).
If the actual Resistance Standard value is different than 1 kΩ, 100 kΩ, or
1 MΩ, replace the Lower Limit and Upper Limit values shown in Table
4-1, Performance Test Record, with the values computed by the program.
4-12 Verification Tests