Trek 541A Non-Contacting Electrostatic Voltmeter for EOS-ESD - Manual (Page 2)

Model 541A Specifications
Performance
Measurement Ranges
Model 541A-1 0 to ±1 kV DC or peak AC
Model 541A-2 0 to ±100 V DC or peak AC
Speed of Response (10%
to 90%) Less than 50 ms for a ±1 kV step (541A-1)
Less than 50 ms for a ±100 V step (541A-2)
Accuracy 1% of full scale
Resolution 0.1%
Monitor Output
Model 541A-1 1/100th of the measured voltage
Model 541A-2 1/10th of the measured voltage
Output Noise Less than 30 mV rms*
Output Impedance 47 W
Features
Alarms Activated if measured voltage exceeds
preset threshold limits; positive/negative
limits may be programmed separately
Visual Front-panel LEDs illuminate when
thresholds are reached
Audible ON/OFF programmable pulsating or
continuous tone. (+) and (-) alarms have
different tone rates for the pulsating tone
selection
Alarm Relay Output Form C relay contact with barrier strip
terminals; changes state when voltage
thresholds are met or exceeded
Alarm Digital Output TTL output with a TTL low (0 to 0.8 V) as
the alarm “ON” status; TTL high (2.5 to 5.0
V) indicates a normal condition
Reset Button Resets alarms and peak hold to zero
Zero Control Adjustable to produce zero volts when
probe coupled to a known zero voltage
source
Alphanumeric LCD
Display 20 character by four line (20x4) LCD
displays the present voltage and holds the
most positive and most negative values
Ground Receptacle Banana jack
Serial Port and USB Port Provides control of specific functions and
acquires sensor data utilizing Trek software
and a PC connected to the RS-232 serial
port or the USB Type B port (connectors are
on back panel)
Current Output Provides a current of 4 mA to 20 mA
representing -1 kV to +1 kV (541A-1) and
-100 V to +100 V (541A-2)
Features (cont.)
Menu ↑↓Buttons Select and program menu options - the
set the alarm threshold voltages, alarm
conditions and alarm reset type
↑↓
Mechanical
Dimensions 97 mm H x 152 mm W x 204 mm D
(3.8” H x 6” W x 8” D)
Weight 0.77 kg (1.7 lb.)
Operating Conditions
Temperature 15°C to 35°C (59°F to 95°F)
Relative Humidity 5% to 85% RH, non-condensing
Altitude To 2000 m (6561.68 ft.)
Electrical
Power 15 V DC ±20%, 800 mA, power bus or
AC/DC adapter with a 2.1 mm DC plug.
Power ON/OFF Rear panel switch
Supplied Accessories
PN: 24005 Operator Manual (with software CD), PN: N9056 6P/4C
Plug, PN: BA108 Serial Cable, PN: N9044 Ground Cord
Optional Accessories
AC/DC Adapter PN: F5054R
Walking Test Adapter - Round Body Probe CN: 1K037
Walking Test Adapter - Square Body Probe CN: 1K038
Probes
Probe Miniature electrostatic field chopper probe
End-view orientation
(round body) Model No: 541PR-E. Aperture 1.6 mm (0.06”)
diameter. Dimensions 9.7 mm dia x 50 mm L
(0.38” dia. x 2” L)
Side-view orientation
(round body) Model No: 541PR-S. Aperture 2.3 mm (0.09”)
diameter. Dimensions 9.7 mm dia x 53 mm L
(0.38” dia x 2.1” L)
Side-view orientation
(square body) Model 541P-S. Aperture 2.5 mm (0.1”)
diameter. Dimensions 5.6 mm sq x 50 mm L
(0.22” sq x 2” L)
Probe Cable Length 3 meters nominal (9.8 ft.)
Probe-to-Surface
Separation Distance 2.5 mm ±1 mm (recommended)
Copyright ã 2013 TREK, INC. All specifications are subject to change. 1340/JRB
End View Probe Aperture
1.6 mm
50 mm
Side View Probe Aperture
2.3 mm
50 mm
50 mm
Side View Probe Aperture
2.5 mm 5.6 mm
Measurement and Power Solutions
TM
*Measured using the true rms feature of the HP Model 34401A digital multimeter