Products: Electrostatic Voltmeter Instruments
Model 800 High Impedance Voltmeter
Trek developed the Model 800 Infinitron(TM) 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 10E-15 F and an input resistance of greater than 1 x 10E16 ohms, 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.
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 10E16 ohms.
Capacitance less than 10E-15 F.
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
pushbutton 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 ohm.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.
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.).
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.
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).
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.
Copyright © 2004 TREK, INC. All specifications are subject to change.