Ac Voltage Specifications; Ac Current Specifications - Fluke 287C Calibration Manual

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Calibration Manual
AC Floor:
When the input leads are shorted together in the ac functions, the Meter may display a residual reading up to 200 counts.
A 200 count residual reading will cause only a 20 count change for readings at 2 % of range. Using REL to offset this
reading may produce a much larger constant error in later measurements.
AC+DC:
AC+DC is defined as

AC Voltage Specifications

Function
[5]
AC mV
AC V
dBV
Low pass
filter [4]

[4]
[1] Below 5 % of range, add 20 counts.
[2] 10 A to 20 A, 30 seconds on, 10 minutes off. >10 A not specified.
[3] 400 mA continuous; 400 mA to 550 mA for 2 minutes on, 1 minute off.
[4] 289 only.
[5] Add 2.5 % above 65 kHz.
[6] Range is limited to 440 Hz.
See Detailed Specifications introduction for additional information.

AC Current Specifications

Function
AC μA [3]
[3]
AC mA
AC A [2]
[1] 10 A range (10 % to 100 % of range).
[2] 20 A for 30 seconds on, 10 minutes off. >10 A not specified.
[3] 400 mA continuous; 550 mA for 2 minutes on, 1 minute off.
[4] Verified by design and type tests.
See Detailed Specifications introduction for additional information.
6
2 2
ac +
dc
Range Resolution
[1]
50 mV 0.001 mV
500 mV 0.01 mV
[1]
5 V 0.0001 V
50 V [1] 0.001 V
500 V [1] 0.01 V
1000 V 0.1 V
[3]
-70 to -62 dB 0.01 dB
[3]
-62 to -52 dB 0.01 dB
-52 to -6 dB [3] 0.01 dB
-6 to +34 dB [3] 0.01 dB
34 to 60 dB [3] 0.01 dB
1000 V 0.1 V
Range Resolution
500 μA 0.01 μA
5000 μA 0.1 μA
50 mA 0.001 mA
400 mA 0.01 mA
5 A 0.0001 A
[1]
10 A 0.001 A
20 to 45 Hz 45 to 65 Hz
1.5 % + 60 0.3 % + 25
1.5 % + 60 0.3 % + 25
1.5 % + 60 0.3 % + 25
1.5 % + 60 0.3 % + 25
1.5 % + 60 0.3 % + 25
1.5 % + 60 0.3 % + 25
3 dB 1.5 dB
1.5 dB 1.0 dB
0.2 dB 0.1 dB
0.2 dB 0.1 dB
0.2 dB 0.1 dB
2 % + 80 2 % + 40
2 % + 80 2 % + 40
20 to 45 Hz 45 to 1 kHz
1 % + 20 0.6 % + 20
1 % + 5 0.6 % + 5
1 % + 20 0.6 % + 20
1 % + 5 0.6 % + 5
1.5 % + 20 0.8 % + 20
1.5 % + 5 0.8 % + 5
Accuracy
65 Hz to
10 to 20 kHz 20 to 100 kHz
10 kHz
0.4 % + 25 0.7 % + 40
0.4 % + 25 0.7 % + 40
0.6 % + 25 1.5 % + 40
0.4 % + 25 0.7 % + 40
0.4 % + 25 Not Spec'd
0.4 % + 25 Not Spec'd
2 dB 2 dB
1 dB 1 dB
0.1 dB 0.2 dB
0.1 dB 0.2 dB
0.1 dB Not Spec'd
2 % +10
Not Spec'd
-6 % -60 [2]
2 % + 40 [6] Not Spec'd
Accuracy
1 to 20 kHz 20 to 100 kHz
0.6 % + 20
0.6 % + 10
0.6 % + 20
1.5 % + 10
3 % + 40 [4]
[4]
3 % + 10
[5]
3.5 % + 40
3.5 % + 40
[5]
3.5 % + 40
3.5 % + 40
Not Spec'd
Not Spec'd
3 dB
2 dB
0.8 dB
0.8 dB
Not Spec'd
Not Spec'd
Not Spec'd
[4]
5 % + 40
5 % + 40
5 % + 40
5 % + 40
Not Spec'd
Not Spec'd