User guide

Valhalla Scientific, Inc.
4650A Specifications
VALHALLA SCIENTIFIC, INC.
4650A PROGRAMMABLE DIGITAL IGNITER TESTER
SPECIFICATIONS
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Accuracy
MODEL 4650A ACCURACY SPECIFICATIONS
Rng # Maximum
Input
Maximum
1
Resolution
Accuracy
2
Accuracy
3
Test
4
Current
1
2.49999Ω 10µΩ
±0.015% of rng ±0.1% of range 5mA
2
24.9999Ω 100µΩ
±0.015% of rng ±0.1% of range
500µA
3
249.999Ω 1mΩ
±0.015% of rng ±0.1% of range
50µA
4
2.49999kΩ 10mΩ
±0.015% of rng ±0.1% of range
5µA
5
24.9999kΩ 100mΩ
±0.015% of rng ±0.1% of range 500nA
6
249.999kΩ 1Ω
±0.015% of rng ±0.1% of range 500nA
7
2.49999MΩ 10Ω
±0.5% of rng ±0.2% of range 50nA
8
24.99MΩ 10kΩ
±2% of rng ±0.2% of range 5nA
Notes:
[1] Resolution is user-selectable. The maximum available resolution for each range is shown.
[2] Valid for inputs above 10% of the maximum input.
[3] Valid for inputs from 1% to 10% of the maximum input. Inputs less than 1% are not specified.
[4] Fail-safe current is 7.5mA on all ranges if range 1 is installed, otherwise 750µA all ranges.
Operating Specifications
Compliance Voltage................................... Clamped at 50mV±5%(rngs 1-5) or 200mV±5%(rngs 6-8)
True Ohms Mode ...........................................................Pulsed test current available in ranges 1-4 only
CMRR......................................................................................................................... > 70dB @ 50-60Hz
NMRR......................................................................................................................... > 35dB @ 50-60Hz
Overload Protection................................................................................................. 100V
peak
all terminals