Model 77 Series IV
Calibration Information
12
Performance Tests
Note
When calibrating or measuring ac current, avoid the potential for errors from coupled noise by either:
1. Shorting the VeG to the COM input
or
2. Having no connection to the VeG input.
1. Set the Meter’s Rotary Switch to the position called for in Table 2, and for all measurements other than
current (amps), connect the calibrator to the VeG and
COM input terminals.
• If testing the milliamps function, connect the calibrator to the Meter
400 mA and COM input
terminals.
• If testing the amps function, connect the calibrator to the Meter
10A and COM input terminals.
2. Referring to Table 2 or Table 3, apply the indicated calibrator output voltages to the UUT for each test.
3. Verify that the UUT displays a reading that is within the limits shown in the Meter Response column.
Table 2. Performance Tests
Meter Response
Steps Test
(Switch Position)
5500 Output
Lower Limit
Upper Limit
1 500 Ω 497.3 Ω 502.7 Ω
2 50 kΩ 49.74 kΩ 50.26 kΩ
3 5 MΩ 4.974 MΩ 5.026 MΩ
4 10 MΩ 9.79 MΩ 10.21 MΩ
5
e
Ohms
[2]
40 MΩ 39.19 MΩ 40.81 MΩ
6 25 Ω Beeper On
7
R
Continuity
250 Ω
Beeper Off
8 50 mV 45 Hz 0.47 V ac 0.53 V ac
9 5 V 45 Hz 4.898 V ac 5.102 V ac
10 5 V 1 kHz 4.898 V ac 5.102 V ac
11 50 V 45 Hz 48.98 V ac 51.02 V ac
12 50 V 1 kHz 48.98 V ac 51.02 V ac
13 500 V 45 Hz 489.8 V ac 510.2 V ac
14 500 V 1 kHz 489.8 V ac 510.2 V ac
15 1000 V 45 Hz 978 V ac 1022 V ac
16
K
AC Volts
1000 V 1 kHz 978 V ac 1022 V ac
17 K
Hz
AC Volts Frequency
[1]
5 V 50 kHz 49.94 kHz 50.06 kHz
To Next Page
Loading...
