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Item Number
CVM-780
| what's included |
- CVM-780 Contact Voltmeter
- CVM-780 Probe Assembly
- Metal Pins (2)
- Ceramic Pins (2)
- Pin Tool
- CVM-780 CC 6 ft. DB-9 Connection Cable
- CVM-780 Universal Battery Charger
- PFP-861LL 72 inch Green Test Lead
- GAP-005 Ground Adapter Plug
- PGA-710 Analog Connection Cable
- PRS-801BC Bulldog Clip
- PRS-801-WW Electrode Cleaning Wipes (5)
- Operator's Manual
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CVM-780 Contact Voltmeter Set
- Measure Voltages with Pinpoint Accuracy
- Ceramic Probe Tips allow Accurate Measurement
- Reads Real Voltage
- Valuable ESD Analysis Tool
The CVM-780 Contact Voltmeter™ combines the ease of use of a digital voltmeter with the high input impedance and low input capacitance of a true electrostatic voltmeter in a small, portable, battery operated package.
Being a true electrostatic voltmeter, not a field meter means that it reads real voltage, without confusing it with electrostatic field strength, which can be distinctly different.
The CVM-780 Contact Voltmeter™ uses a unique active probe design which is fully guarded and shielded for minimal interference with the surrounding E field.
The Contact Voltmeter™ is powered by rechargeable Nickel Metal Hydride batteries and is a valuable ESD Analysis Tool.
Specifications
Basic Description
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High impedance contact voltmeter with active probe |
DC Characteristics
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Intended Operating Range: 0 to ±525 volts |
Resolution
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1 volt, 3 digit display |
Circuit accuracy
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<±1%
Note: Maximum measurement range is ±575 Volts for brief periods |
Dynamic Characteristics
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Response Time: Approximately 1ms for a voltage step of 200V at the probe tip to the monitor output.
Digital display update: 3 readings per second. |
Input charge/measurement
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Approximately 100 femptocoulomb/volt (1.0x10-13 C/V) |
Input Impedance
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=1014 ohm in parallel with <1pF Capacitance |
Monitor Output
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Scale Factor: 10,000:1; 100uV/V (Compatible with Prostat™ PGA-710 Autoanalysis System™) |
Recording Deviation
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Typically < ±10 volts at ± 500 Volts |
| Measurement Tolerances |
When measuring DC voltage reference:
500 V Less or Equal to ±2 V
100 V Less or Equal to ±2 V
50 V Less or Equal to ±2 V
10 V Less or Equal to ±1 V
When measuring floating conductors:
500 V Less or Equal to ±5% ±2 Counts
100 V Less or Equal to ±5% ±2 Counts
50 V Less or Equal to ±5% ±2 Counts
10 V Less or Equal to ±10% ±2 Counts |
Probe Tips
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Metal: Nominally 0.95 and 0.45 inch Ceramic 0.90 and 0.40 inch ±0.05” |
Portable Operation
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Approximately 3.5 Hours on Full Battery Charge
(Operates during Battery Charge) |
Power
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4 each Energizer NH15-2500 Nickel-Metal Hydride rechargeable batteries (AA Size) |
Charger
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Universal 90 to 264 Volts, 47 to 63 Hz |
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