True-rms Digital Multimeters
Performance Tests
19
Table 4. 287/289 Performance Test Steps (cont.)
Display Reading
[1]
Step Function Range Input Level
Frequency
or Model
Lower
Limit
Upper
Limit
31.
VAC, Lo
Pass (289)
500.00 V 50 V 60 Hz 48.60 51.40
32.
VAC, Lo
Pass (289)
500.00 V 50 V 1600 Hz
[3]
0.00 8.00
33. VAC 500.00 V 500 V 10 kHz 497.75 502.25
34. VAC 1000.0 V 1000 V 10 kHz 993.5 1006.5
35. DC V 5.0000 V 4 V 3.9988 4.0012
36. DC V 50.000 V -40 V -40.0120 -39.988
37. DC V 500.00 V 400 V 399.86 400.14
38. DC V 1000.0 V 600 V 599.6 600.4
39. DC V. AC/DC 5.0000 V 200 mV 0 Hz 0.1977 0.2023
40. DC V, AC/DC 5.0000 V 2 V 5 kHz 1.9660 2.0340
41.
ACV, Peak 5.000 V 4 V p-p, Sq.
wave, +1 V
offset
2 kHz
1.863 2.137
Put Meter’s rotary switch to Capacitance function
Remove Test Leads from 5520A and REL offset
Reconnect Test Leads to 5520A
42 Capacitance 10.00 nF
[4]
5 nF 4.90 5.10
43 Diode Test 3.1000 V 3.5 kΩ 2.0000 3.1000
44 Diode Test 3.1000 V 0 Ω N/A N/A
Set 5520A for 2-Wire COMP and Connect in 4-Wire configuration
45 LoΩ (289) 50.000 Ω
[1]
0 Ω
Allow reading to stabilize
(5-10 seconds)
REL offset
46 LoΩ (289) 50.000 Ω 0.2 Ω
[2]
0.180 0.220
47 LoΩ (289) 50.000 Ω 50 Ω
[2]
49.905 50.095
Set 5520A for COMP off
Connect 5520A Auxiliary Output to Meter’s mA/μA and COM Input Terminals
48 μA AC 500.00 μA 500 μA 60 Hz 496.80 503.20
49 μA AC 500.00 μA 500 μA 30 kHz 492.85
[5]
507.15
[5]
50 μA AC 5000.0 μA 5000 μA 30 kHz 4928.5
[5]
5071.5
[5]
51 μA DC 500.00 μA 500 μA 499.42 500.58