Specifications 6
34405A User’s and Service Guide 133
Temperature and Capacitance Specifications
[1]
[1] Specifications are for 30 minutes warm-up, 5½-digit resolution and calibration
temperature 18° C - 28° C.
[2] 20% over range on all ranges except 1000Vdc.
[3] Specifications are 2-wire ohms using Math Null. If without Math Null, add 0.2Ω
additional error.
[4] Specifications are for the voltage measured at the input terminals only.
[5] 20% over range on all ranges except 750 VAC
[6] Specifications are for sinewave inputs > 5% of range. Maximum crest factor : 3
at full scale.
[7] Additional error to be added as frequency > 30kHz and signal input < 10% of
range. 30kHz ~ 100kHz: 0.003% of full scale per kHz.
[8] For 12A terminal, 10A DC or AC rms continuous, > 10A DC or AC rms for 30
seconds ON and 30 seconds OFF.
[9] For 1A and 10A ranges, the frequency is verified for less than 5kHz.
[10] Specifications are for half-hour warm-up, using 0.1 second aperture. The
frequency can be measured up 1Mhz as 0.5V signal to 100mV/1V ranges.
[11] For 20Hz - 10kHz, the sensitivity is AC input current from 10% to 120% of range
except where noted.
Ta ble 2 6 Temperature and Capacitance Accuracy ± (% of reading + % of range)
Function Range
Probe Type
or Test Current
1 Year
23° C ± 5° C
Temperature Coefficient
0° C - 18° C
28° C - 55° C
Temperature -80.0° C to 150°C 5 kΩ thermistor probe Probe accuracy + 0.2 °C 0.002 °C
-110.0° F to 300.0° F 5 kΩ thermistor probe Probe accuracy + 0.4 °F 0.0036 °F
Capacitance 1.000 nF 0.75 µA 2+0.8 0.02+0.001
10.00 nF 0.75 µA 1+0.5 0.02+0.001
100.0 nF 8.3 µA 1+0.5 0.02+0.001
1.000 µF - 100.0 µF 83 µA 1+0.5 0.02+0.001
1000 µF 0.83 mA 1+0.5 0.02+0.001
10,000 µF 0.83 mA 2+0.5 0.02+0.001
34405A users guide.book Page 133 Saturday, September 2, 2006 3:38 PM
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