Measurement and power solutions, Model 158a specifications, Introductory specifications – Trek 158A Charged Plate Monitor User Manual
Page 2

Measurement and Power Solutions
TM
www.trekinc.com
Model 158A Specifications
Performance
Monitored Voltage Range
0 to ±1100 V DC or peak AC
Bandwidth (-3 dB)
DC to 80 Hz
Zero Stability (referred to
plate voltage)
Drift with Time (no incident
ion flow)
Less than 6 V/minute
Drift with Temperature
Less than 10 mV/°C, noncumulative
Decay Mode Thresholds
Start Voltage
Programmable from 1 to ±1000 V in 1 V
increments
Start Accuracy
Within ±1 V of programmed start voltage
Stop Voltage
Programmable from 0 to ±999 V in 1 V
increments
Stop Accuracy
Within ±1 V of programmed start voltage
or ±0.2 V if set less than or equal to 90 V
Decay Timer
Resolution
0.1 sec., from 0.1 sec. to 999.9 sec.,
resolution 0.1 sec
Voltage Monitor Output
Voltage Monitor Output
A BNC proving and low voltage replica of
the plate voltage
Scale Factor
1/200th of the plate voltage
DC Accuracy
Better than 0.1% of full scale
DC Offset
Less than ±10 mV
Output Noise
Less than 10 mV rms*
Output Impedance
Less than 0.1
W
Features
LCD Color Display (with
contrast adjustment).
Navigate via touch-screen
or function keys
7 inch LCD touch-screen displays
graphical readouts, numeric data,
informational data, programming
parameters and retrieved data
Analysis Resolution
14 bits
Mode Select/Programming
Allows multiple operational and
programming options. Can be preset to
perform a number of automated tests and
is available to store or retrieve previously
defined test parameters. Test locations
and results can be saved and retrieved
for future reference.
Ion Collecting Plate
(standard option)
Meets ANSI/ESD-STM3.1 requirements
Power ON-OFF
A momentary push-button
Float Mode, (+) Decay
Mode, or (-) Decay Mode
Performs float voltage and decay time
EOS/ESD measurements utilizing
parameters, guidelines, and standards
set by the EOS/ESD Association
Features (cont.)
For (+) Decay and
(-) Decay Modes
The charged-plate is charged to a voltage
level above the programmed (+) or (-) start
voltage value. The plate is allowed to decay
toward zero due to the ion impingement on
the plate. The time required for the plate to
decay from the programed start voltage to the
programed stop voltage is displayed on the
timer.
For Float Mode
The charged-plate monitor is reset to 0 V ±0.5
V. The plate is allowed to “float” to a voltage
level dictated by ion impingement on the plate.
USB Flash Drive
USB Host
USB host port allows information to be saved,
retrieved and exchanged.
Barcode Scanner
(Optional)
A barcode scanner can be used to input
ionizer serial numbers directly from the Model
158A
Electrical
Power Requirements
Internal NiMH battery or External
1.75 A, 2.1mm jack charger / eliminator
24V DC,
Battery Operating
Time
Greater than six hours of continuous operation
Mechanical
Dimensions
53 mm H x 226 mm W x 187 mm D
(2.1” H x 8.9” W x 7.4” D)
Weight
2.2 kg (4.9 lb)
Voltage Monitor
Connector
BNC connector (3 meter length maximum)
Ground Receptacle
Binding ground post
Cable from
Instrument to
Floating Plate
Coaxial type; diameter is 4.95 mm (0.195”);
length is 3 meters (10 ft)
Operating Conditions
Temperature
5°C to 35°C (41°F to 95°F)
Relative Humidity
To 80%, non-condensing
Supplied Accessories
Operator’s Manual
AC Adapter (100 to
265 V AC)
PN: 24021
PN: F5058R
Ion Collecting Plates (order separately)
150 mm x 150 mm
(6” x 6”) plate
17397
25 mm x 25 mm
(1” x 1”) plate
17375
Optional Accessories
Charged Plate Tripod
PN: DK142
Walking Test Adapter
CN: 1K062
Barcode Scanner
PN: M1041R
Copyright ã 2013 TREK, INC. All specifications are subject to change. 1332/JRB
INTRODUCTORY SPECIFICATIONS
*Measured using the true rms feature of the HP Model 34401A digital multimeter