Datasheet

Page 11
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Digital multimeter specifications (continued)
Supplemental characteristics (continued)
Diode
Measurement method 0.83 mA ± 0.2% constant current source
Open circuit voltage < +5.0 V
dc
Audible tone
– Continuous beep when level is below +50 mV DC
– Single tone for normal forward-biased diode or semiconductor junction where
0.3 V ≤ reading ≤ 0.8 V
Input protection 1000 V
rms
on all ranges, < 0.3 A short circuit
Capacitance
Measurement method Computed from constant current source charge time, typical 0.2 to 1.4 V signal level
Maximum voltage at full scale
– For 1 nF to 10 µF range: < 1.5 V
– For 100 µF to 10000 µF: < 0.33 V
Input protection 1000 V
rms
on all ranges, < 0.3 A short circuit
Response time Approximately 1 s for 100 µF and ranges below 100 µF
Charge and discharge voltage 5 V
pp
(approximately from +3 V to –2 V)
Frequency
Measurement method Reciprocal counting technique
Signal level 10% of range to full scale input on all ranges
Input protection
– Voltage path: 750 V
rms
on all ranges
– Current path: Protected with 3.15 A/500 V, FF fuse
Maximum display counts (excluding frequency)
5½ digits 120,000
4½ digits 12,000
Measurement noise rejection
CMRR (Common Mode Rejection Ratio)
for 1 kΩ unbalanced in LO lead
– DC: 140 dB
– AC: 70 dB
NMRR (Normal Mode Rejection Ratio)
60 Hz ± 0.1%
– 5½ digit: 65 dB
– 4½ digit: 0 dB
50 Hz ± 0.1%
– 5½ digit: 55 dB
– 4½ digit: 0 dB