Trek 820 User Manual
®
Trek Model 820 Infinitron
High Impedance Contacting/Non-contacting Voltmeter
The ±2 kV Trek Model 820 Infinitron Voltmeter may be
used in either contacting or non-contacting mode to
acquire precision surface voltage measurements. It is
especially beneficial when used with applications that
demand infinitely high loading impedance levels far
beyond the reach of currently available high impedance
voltmeter instruments. The Model 820 comes with a
guarantee of virtually no modification of the object being
measured. This allows the instrument to indicate, with
high precision, the voltage level of both conductive and
insulative objects and surfaces.
Key Specifications
! Measurement Range: 0 to ±2 kV DC or peak AC
! Measurement Accuracy: Better than ±0.1% of full scale (voltage monitor output)
! Speed of Response: Less than 500 µs for a 1 kV input step
! Input Characteristics
Resistance: Greater than 1 x 10 W
Capacitance: Less than 1 x 10 F
15
-15
®
Typical Applications Include
! Accurate reading of electrostatic voltage levels associated with ESD sensitive components, circuits and surfaces
Features and Benefits
! Voltage monitor output scale factor at 1/200
! Probe electrode may be easily replaced with other sensor tips
Monitor provides a low voltage replica of the measured electrostatic potential for
!
monitoring purposes or for use as a feedback signal in a closed loop system
Digital Enable allows an external device to turn ON/OFF the internal HV power supply
!
Easy-to-read LED display
!
Designed to be operated on a bench top
!
NIST-traceable Certificate of Calibration provided with each unit
!
compliant
!
Model 820 Probe
Available Probes
! Model 820 Probe
- Sensor
0.8 mm conducting ceramic electrode. The sensors may be easily replaced, dependent on the measurement
requirements
- Orientation
Pencil probe structure with end contact sensor.
- Probe Dimensions
152 mm L x 20 mm Diameter (6” L x 0.75” Diameter)
- Probe Cable Length
1.5 m ±75 mm (5.3 ft ±3 in.)
TREK, INC. • 190 Walnut Street • Lockport, NY 14094 • USA • 800-FOR TREK
716-438-7555 • 716-201-1804 (fax) • www.trekinc.com • sales@trekinc.com
Model 820 Specifications
Performance
Measurement Range
0 to ±2 kV DC or peak AC
Measurement Accuracy
Voltage Monitor Output
Better than ±0.1% of full scale
Voltage Display
Better than ±0.1% of reading, ±1 digit
(referred to measured input)
Speed of Response
(10% to 90%)
Less than 500 µs for 1 kV step
Large Signal Bandwidth
(-3 db)
DC to greater than 200 Hz for 4 kV pp
Stability
Contacting - Drift with
time at 22 ºC
Less than 6 V/minute, cumulative
(referred to input)
Noncontacting
Better than 100 ppm/˚C
Input Resistance
Greater than 1 X 10
15
W
Input Capacitance
-15
Less than 1 X 10 F
Voltage Monitor
Output
A BNC output provides a buffered lowvoltage replica of the measured voltage
Ratio
1/200th (standard)
Output Current
±5 mA (minimum)
Output Noise
Less than 10 mV rms
Output Impedance
Less than 0.1 W
Front Panel Meter
Voltage Display
3 ½ digit LED display
Range
0 to V±1.9 k
Resolution
1 V
Zero Offset
Less than or equal to 1 count±
Sampling Rate
1 ms between data points
Features
USB Connector
Allows data transfer to a computer with a
sampling rate of 1 ms between data
points (stream data or block data transfer
protocols). PC software can graph the
unit’s output
Reset Button/Connector
A momentary front panel push-button
switch or rear panel external TTL input
signal initiates a reset function.
Digital Enable
A TTL compatible input to enable or disable
the unit’s high-voltage measurement. A TTL
high will disable while a TTL low will enable
the measurement..
Mechanical
Dimensions
10.2 cm H x 22.9 cm W x 33 cm D
(4” H x 9” W x 13” D)
Weight
1.8 kg (4 lb)
BNC Connectors
Voltage Monitor
Digital Enable
Reset
USB Port
Allows data transfer to a computer with a
sampling rate of 1 ms between data points
Ground Receptacle
Threaded ground stud
Power ON/OFF
A momentary push-button
Probe Connector
Location
Front panel
Operating Conditions
Temperature
10°C to 35°C (50°F to 95°F)
Relative Humidity
0 to 75%, noncondensing
Altitude
To 2000 m (6561.68 ft.)
Electrical
AC Line Cord
Receptacle
A universal line PFC-type wall cube provides
input power to the ESVM
Line Voltage
24 V DC, ±5% @ 1 A
DC Connector
2.1 mm DC power plug
Supplied Accessories
Operator’s Manual
with software
PN: 24003
Ground Cord
PN: N9082
AC/DC Universal
Power Cube
PN: L5190 (
264 V AC)
Universal power cube at 90 V to
Probe
Model 820P
Probe Tip
Ceramic tip of 0.8 mm diameter
Optional Accessories
Probe
Model 820P
Probe Tips
Ceramic tip of 0.8 mm
Additional tips can be customized in various
other sizes as small as 100 µm to cater to a
wide field of applications; please contact the
factory for more information
Note: All specifications measured with a 5-minute warmup time.
Copyright ã 2012 TREK, INC. All specifications are subject to change. 1234/DEC
Measurement and Power Solutions
TM
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