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Newport 301AN & 301A Low-Cost 3-1/2 Digit DC Voltmeters
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Item Number: 301
Manufacturer: Newport Electronics
Part Number: 301
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Newport 301AN & 301A Low-Cost 3-1/2 Digit DC Voltmeters
Models 301A and 301AN are two pinout versions of the same low-cost 3 1/2 digit DC voltmeter. They fit a standard 1/8 DIN panel cutout and require a depth of less than 4.1 in (104 mm) behind the panel. Both models include "INFINITY STYLE BEZEL AND ADAPTERS"
Input Ranges:
The 301A and 301AN offer voltage ranges of +/-0.1999 V, +/-1.999 V, +/-19.99 V and +/-199.9 V dc. The input is true-differential, with excellent common-mode noise rejection (CMR). By using an external DC voltage reference, any of these ranges can further be configured for 3-wire ratio measurement with readout from 0 to 1.999.
Two Pinouts:
Model 301A is pin-compatible with Newport's older Model 201 and is recommended for existing 201 applications.
Model 301AN is pin-compatible with Newport's new 202A, 2001A, 2002A Series and is recommended for new applications.
Options:
The 301A and 301AN can be configured for four voltage input ranges, three decimal-point positions, and high- impedance 3-wire ratio input. Mechanical options include a screw-terminal barrier strip for signal and power and a splash-proof lens cover which meets NEMA-4 standards.
Features:
- +/-1,999-count display span
- +/-200 mV to +/-200 Vdc ranges
- True-differential input with 80 dB CMR
- 3-wire ratio input
- Bright, 0.56 in (14.2 mm) LED display
- Automatic zero and polarity
- Display hold and test
- 115/230 Vac power
- 1/8 DIN case
Options:
- Isolated 9-32 Vdc power
- Isolated 26-56 Vdc power
- Screw-terminal barrier strip
- NEMA-4 splash-proof lens cover
Specifications:
Analog Input:
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Range
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+/-199.9 V
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+/-1.999 V
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+/-19.99 V
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+/-199.9 V
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Resolution
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100 uV
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1 mV
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10 mV
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100 mV
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Maximum Input
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130 Vp
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130 Vp
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250 Vp
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250 Vp
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Input Resistance
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1 Gohm
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1 Gohm
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1.1 Mohm
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1.0 Mohm
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Bias Current
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50 pA
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50 pA
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5 pA
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1 pA
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Configuration: Differential, Bipolar
Zero: Automatic
Span Adjustment: +/-5%
Noise Rejection:
NMR: 56 dB, 50/60 Hz
CMR, AC GND to SIG GND: 120 dB, DC to 60 Hz
CMR, SIG LO to SIG GND: 80 dB, DC to 60 Hz
CMV, AC GND to SIG GND: 1500 Vp per HV test, 354 Vp per IEC spacing
CMV, SIG LO to SIG GND: +/-1 Vp
Accuracy at 25 C
Maximum error: +/-0.05% of reading +/-1 count
Span tempco: +/-0.01% of reading/Degree C
Step response: 1 s
Warmup to rated accuracy: 1 min
Analog-to-Digital Conversion:
Technique: Dual-slope, average-value
Polarity: Automatic
Signal integration period: 100 ms
Option SPC4 NEMA 4 Splash Proof Meter Cover
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