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Model 800 Infinitron® High Impedance Voltmeter

Trek developed the Model 800 Infinitron® for voltage measurement applications that demand virtually infinite loading impedance levels which are far beyond the reach of currently available high impedance voltmeter instruments. These applications include accurate reading of electrostatic voltage levels associated with ESD sensitive components, circuits, and surfaces.

Featuring an Input capacitance of less than 1 x 10-15 F and an input resistance of greater than 1 x 1016 Ω, a guarantee of virtually no modification of the charge (voltage) of the measured object is obtained. This allows the Model 800 to indicate, with high precision, the voltage level of objects and surfaces - even before contact is made.

Virtually zero charge exchange upon contact prevents ESD events which can cause object damage. These near infinite impedance features allows direct measurement of such devices as semiconductor components and chips, insulative surfaces, MR head sensors, hand tools, etc.

The Model 800 probe features replaceable, contact electrodes, zero and hold pushbuttons and a 10 foot cable. A large informative backlit LCD screen displays the measured (or held) voltage values, date, time, prompts, and other information for maximizing measurement performance.

Remote monitoring at 20:1 and 1:1 measured to output voltage ratios is provided through BNC connectors.

 

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PERFORMANCE

Measurement Range
0 to ±100 V DC or peak AC.

Accuracy
Better than ±0.1% of full scale.

Large Signal Bandwidth (200 V p-p)
Greater than 100 Hz.
Small Signal Bandwidth (10 V p-p)
Greater than 10 kHz.

Speed of Response (10% to 90%)
Less than 3.5 ms for a 100 V step.

Input Impedance
Resistance greater than 1016 Ω.
Capacitance less than 10-15 F.

PROBE

The probe connects to the front panel and may either be hand-held or mounted to a clamping device.

Model 800P Probe
Sensor
0.5" gold plated rounded tip electrode (may be replaced or interchanged with other style sensor
tips).
Orientation
Pencil probe structure with end
contact sensor.
Probe Body Type
Elliptical with safety ring.
Probe Dimensions
185 mm L x 22.6 mm W x 25 mm D
(7.28" L x 0.89" W x 0.98" D)
34 mm (1.34") diameter safety ring.

Probe Cable Length
3048 mm ±76 mm (10 ft. ±3 in.).

 

 

PRODUCT FEATURES

LCD Display Screen with
LED back-light
127 mm x 38 mm (5" x 1.5") screen
displays prompts and voltage
measurements with date and time.
Resolution
240 x 64 pixels.

Hold Mode
Activate the HOLD mode to lock the instantaneous voltage measurement value on the LCD screen display.
Local (unit and probe)
Momentary pushbuttons located on the unit and on the probe housing can control the HOLD mode. Pressing the button once initiates the HOLD mode, pressing the button again will release the HOLD mode.
Remote Operation
The [REMOTE OPERATION] HOLD BNC connector is capable of both sending TTL control signals or receiving external TTL control signals to be used to initiate the HOLD mode function.

Zero
Local (unit and probe)
Momentarily depressing the ZERO push button on the unit or probe housing provides zeroing of the input.
Remote Operation
Momentarily [100 ms, minimum] applying a TTL low to a designated BNC connector provides zeroing of the input.

Voltage Monitor Output(s)
Two BNC outputs provide buffered replicas of the measured voltage.
Scale
20:1 of the measured to output voltage and 1:1 representation.
DC Accuracy
Better than 0.1% of full scale.
Offset Voltage
Less than ±5 mV (referred to
input).
Output Noise
Less than 10 mV rms
(measured using the true rms feature of the Hewlett Packard Model 34401A digital multimeter).
Output Impedance
Less than 0.5 Ω.

Null Offsets (Auto Null Adjustment)
Nulling of the input voltage and current is necessary when the unit is first powered on, or when the display prompts that an auto null adjustment is necessary. Placing the probe in a holster on the side of the unit and pressing the NULL OFFSETS button provides nullification of the voltage offsets and the “leakage” currents, which
are dependent on environmental conditions. An audio tone will signal when the null offsets process is
completed.

USB Communications Port
A 4-pin Type B connector is provided for future utilization.

TEMP/RH Meter Connector
A connector receives an input from an optional thermohygrometer and enables the Model 800 to display environmental data on the LCD screen.

GENERAL

Power Requirements
A wall cube supply is available for all
nominal line voltages. Contact TREK, INC. or an authorized service organization for additional information.
Connector
2.1 mm DC power plug.
Voltage
12 V AC, ±10%.
Current
1 A.

Instrument Dimensions (with holster)
102 mm H x 316 mm W x 241 mm D
(4" H x 12.5" W x 9.5" D).

Instrument Weight
2.5 kg (5.5 lb).

Operating Conditions
Temperature
15 °C to 35 °C.
Relative Humidity
To 80%, noncondensing.

Voltage Monitor Connectors
BNC coaxial connectors.

Ground Receptacle
Threaded Ground Stud (5-way).

 

ACCESSORIES

Accessories Supplied

  • Operator's manual, 6P/4C plug (N9056), and ground cord (N9044).

Accessories Available

  • In the USA, use the Trek AC/DC Adapter #L5111 or #L5133 (with ground connection). For all other line voltages, contact the factory.

CERTIFICATION

TREK, INC. certifies that each Model 800 is tested and calibrated to specifications using measurement equipment traceable to the National Institute of Standards and Technology to traceable to consensus standards.

Low Voltage Safety Compliance
Overvoltage Category 
CAT I: Peripheral level outputs (less than 60 volts).
Pollution Category 
Degree 1: Operate in environments where no pollution or only dry, nonconductive pollution occurs.

All specifications are subject to change.