Agilent U3606A Multimeter

9
Digital multimeter specifications (continued)
Supplementary specifications
Diode
Measurement method 0.83 mA ± 0.2% constant current source
Open circuit voltage < +5.0 V
dc
Audible tone • Continuous beeping 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 V to 1.4 V
ac
signal level
Maximum voltage at full scale • For 1 nF to 10 F range: < 1.5 V
• For 100 F to 10000 F: 0.33 V
Input protection 1000 V
rms
on all ranges, < 0.3 A short circuit
Response time Approximately 1 s for 100 F and ranges below 100 F
Charge and discharge voltage 5 V
pp
(approximately from +3 V to –2 V)
Frequency
Measurement method Reciprocal counting technique
Signal level 0.2 V to 1.4 V
Input protection • Voltage path: 1000 V
rms
on all ranges, < 0.3 A short circuit
• Current path: Protected with 3.15 A/500 V, FF fuse
Maximum display counts (excluding frequency)
5½ digits 120,000
4½ digits 12,000
Noise rejection
Common mode rejection ratio (CMRR)
for 1 k unbalanced in LO lead
• DC: 140 dB
• AC: 70 dB
Normal mode rejection ratio (NMRR) • 60 Hz ± 0.1%:
5½ digits: 65 dB, 4½ digits: 0 dB
• 50 Hz ± 0.1%:
5½ digits: 55 dB, 4½ digits: 0 dB