Multifunction Calibrator
Full Verification
71
AC Voltage Frequency Accuracy Test
This test requires the use of a frequency counter. Tektronix model FCA3000 or
equivalent is recommended. Use Table 13 for the test record. With some
counters it may be necessary to use a 1 MHz low pass filter as shown in
Figure 14.
1.59 kΩ Resister
Metal Film
Calibrator Main
Output Terminals
100 pF
Capacitor
Counter
Input A
Mount components on a dual banana adapter from ITT Pomona. Part Number 1837
hhp054.eps
Figure 14. 1 MHz Low Pass Filter
To check the Product frequency accuracy:
1. Connect the frequency counter to the output terminals of the Product.
2. Set the Product to 2 V at the output frequencies listed in Table 13.
3. Record the reading in Table 13 Measured Value. Verify that the counter
reads within the limits shown on the test record.
4. Disconnect the counter from the Product.
Table 13. AC Voltage Frequency Accuracy Test Record
Product
Function/Range
Nominal Value Measured Value Limits
10.000 00 Hz @ 2 V 10.000 000 ±0.25 mHz
119.900 00 Hz @ 2 V 119.900 00 ±2.99 mHz
120.000 00 Hz @ 2 V 120.000 00 ±3 mHz
400.000 0 Hz @ 2 V 400.000 0 ±10 mHz
1199.000 0 Hz @ 2 V 1199.000 0 ±29.9 mHz
1200.000 0 Hz @ 2 V 1200.000 0 ±30 mHz
11990.000 Hz @ 2 V 11990.000 ±299.7 mHz
12000.000 Hz @ 2 V 12000.000 ±300 mHz
119900.0 Hz @ 2 V 11900.00 ±2.997 Hz
120000.0 Hz @ 2 V 120000.00 ±3 Hz
1000000.0 Hz @ 2 V 1000000.00 ±25 Hz
1199900.0 Hz @ 2 V 1900000.00 ±47.5 Hz
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