TREK Product - Model 615 SERIES AC/DC High Voltage Generators

Products: High Voltage Function Generators

TREK Model 615A-1

Trek Model 615 Series Info
Output
Performance
Voltage, Current Displays & Monitors
Amplifier Mode Specs
Product Features
General
Certification

TREK Model 615 SERIES of AC/DC High Voltage function Generator

Trek Models 615A-1 and 615-3 are highly precise AC/DC high voltage function generators that can be used in research and development and production facilities. These high-voltage function generator models are designed to simultaneously provide the AC and DC operating potentials required to operate/control an "Electrostatic Charger Roller". "Electrostatic Charger Rollers" are used in the electrostatic photocopier and digital printing systems. These two models can also be considered for use in other applications which require a high voltage function generator.

Constant Voltage Mode
The Trek Model 615A-1 and the Model 615-3 high voltage generators can be used as general purpose, precision, high voltage AC/DC generators that produce output voltages in the range of 0 to 10 kV peak-to-peak. Front panel controls set the voltage levels and provide adjustments for output waveforms and frequencies. A DC bias voltage can be added to the output signal in either polarity up to a maximum peak value of 5 kV.

Constant Current Mode
The Trek Model 615A-1 and the Model 615-3 differ in the type of current which is controlled. The Model 615A-1 maintains the resistive AC current (peak-to-peak) of the load according to front panel set values while supplying additional current to the reactive portion of the load. The Model 615-3 maintains the voltage waveform and controls the total AC current (rectified average) to the load according to front panel settings. Controlled AC current is not effected by DC current. This feature allows for the addition of a DC bias voltage to the output signal. In addition, the Model 615-3 has an adjustable DC limit potentiometer to limit the DC current output.

Amplifier Mode
As high voltage amplifiers, any applied input signal is amplified by a fixed gain of 1000 V/V. DC bias voltage settings can be added to the output signal.

In addition, Model 615 series have many extra features to adjust and control output voltages and output current ranges. These features include: an upper voltage limit setting, a constant current mode range selection switch, an I(s) terminal common post for shield connection of high voltage wiring and overload and compliance indicators.

Voltage and current values are read by front panel displays or through rear panel buffered outputs providing low-voltage representations of the load current and the high-voltage output.

OUTPUT (any mode)

AC Voltage (DC Bias is zero)
0 to 10 kV peak-to-peak.
AC Voltage + DC Bias
0 to ±5 kV peak.
DC Bias (AC voltage is zero)
0 to ±5 kV DC.
AC Current (DC Current is zero)
0 to 10 mA, peak-to-peak.
AC Current + DC Current
0 to ±7.5 mA peak.
DC Current (AC current is zero)
0 to 7.5 mA DC.
Frequency
100 Hz to 10 kHz.

PERFORMANCE

Stability
- Drift with Temperature
  Less than 200 ppm/°C.
- Line Regulation Effects
  Less than 0.1% of full scale, nominal line ±10%.
- Load Regulation Effects
  Less than 0.1% of full scale.
DC Bias Offset (Master DC switch off)
Less than 1 V DC.
Output Noise
Measured using the true rms feature of the Hewlett Packard Model 34401A digital multimeter.
- Constant Voltage Mode
  Less than 2 V rms.
- Constant Current Mode
  Less than 2 µA rms.

VOLTAGE AND CURRENT DISPLAYS AND MONITORS

AC Display
A 3 ½-digit LED display indicates the peak-to-peak value of the AC voltage output or the resistive peak-to-peak AC load current (switch selectable). Not used in the AMPLIFIER mode.
- Range AC Voltage
  0 to 10.00 kV peak-to-peak.
- Range AC Current
  0 to 10 mA (resistive, peak-to-peak).
  Resolution AC Voltage
  10 V peak-to-peak.
- Resolution AC Current
  10 µA (resistive, peak-to-peak).
- Accuracy
  Better than 0.5% of full scale ± 1 digit.
DC Display
A 3 ½-digit LED display indicates either the level of the DC bias or the level of the DC load current (switch selectable).
- Range DC Voltage
  0 to ±5.00 kV DC.
- Range DC Current
  0 to ±5.00 mA DC.
- Resolution DC Voltage
  10 V DC.
- Resolution DC Current
  10 µA DC.
- Accuracy
  Better than 0.2% of full scale ± 1 digit.
Voltage Monitor
A buffered output providing a low-voltage replica of the high-voltage output.
- Scale
  1/1000th of the high-voltage output.
- DC Accuracy
  Better than ±0.1% of full scale.
- Offset Voltage
  Less than 2 mV.
- Output Noise
  Less than 10 mV rms (measured using the true rms feature of the Hewlett Packard Model 34401A digital multimeter).
- Output Impedance
  50 ohms.
Current Monitor
A buffered output providing a low-voltage representation of the load current.
- Scale
  1 V/mA.
- DC Accuracy
  Better than ±0.2% of full scale.
- Offset Voltage
  Less than 2 mV.
- Output Noise
  Less than 20 mV rms (measured using the true rms feature of the Hewlett Packard Model 34401A digital multimeter).
- Output Impedance
  50 ohms.

ADDITIONAL SPECIFICATIONS for the AMPLIFIER MODE

Gain for Noninverting Voltage
The gain of the noninverting amplifier is factory set for 1000 V/V. A voltage gain of 500 V/V is available. Please contact TREK, INC. or an authorized service representative for details.
DC Voltage Gain Accuracy
0.5% of full scale.
Offset Voltage
Less than 1 V DC.
Output noise
Less than 2 V rms (measured using the true rms feature of the Hewlett Packard Model 34401A digital multimeter).
Slew Rate (10 to 90 %, typical)
Greater than 80 V/µs.
Large Signal Bandwidth (1% distortion)
DC to greater than 3 kHz.
Small Signal Bandwidth(-3 db)
DC to greater than 10 kHz.

PRODUCT FEATURES

Internal AC Generator
An internal AC function generator is used to produce the AC output voltage (Constant AC Voltage mode) or the AC load current (Constant AC Current mode). Not used in the AMPLIFIER mode.
- Waveform Options
  Square, sine, or triangle.
- Waveform Distortion
  Less than 1.5%.
- Frequency Range
  100 Hz to 10 kHz.
- Local Operation Waveform Select
  Front panel switch.
- Local Operation Frequency Adjustment
  10-turn potentiometer with dial.
- Remote Operation (20 Hz Resolution) Waveform Select
  2-bit TTL compatible input.
- Remote Operation Frequency Adjustment
  A +0.1 to +10 V DC signal.
Amplifier Input Mode
A front panel BNC connector which will process an external signal.
Current Range Switch
Selects current mode for 0 to 1 mA or 0 to 10 mA.
High-Voltage AC Output Limit
Adjustable from 0 to 10 kV peak-to-peak for both Constant Current mode and Constant Voltage mode. Not used in the AMPLIFIER mode.
- Accuracy
  5% of full scale.
Amplitude Adjustment
- Constant AC Voltage Mode
  Adjustable from 0 to 10 kV peak-to-peak.
- Constant AC Resistive Current Mode
  0 to 1 mA (peak-to-peak) or 0 to 10 mA (peak-to-peak) switch selectable. Not used in AMPLIFIER mode.
AC Output Voltage (Constant Voltage mode)
- Local Operation (0 to 10 kV peak-to-peak range)
  10-turn potentiometer, 20 V peak-to-peak dial resolution.
- Remote Operation
  Gain equals 1 kV peak-to-peak per each applied DC volt ± 0.5% of full scale.
AC Output Resistive Current (Constant Current mode)
Local Operation (10-turn potentiometer)
0 to 1 mA (peak-to-peak) range,
2 µA peak-to-peak dial resolution.

0 to 10 mA (peak-to-peak) range,
20 µA peak-to-peak dial resolution.
AC Output Resistive Current (Constant Current mode)
Remote Operation
0 to 1 mA (peak-to-peak) range,
gain equals 100 µA average per each applied DC volt ±5% of full scale.
0 to 10 mA (peak-to-peak) range,
gain equals 1 mA (peak-to-peak) per each applied DC volt ±2% of full scale.
Compliance Indicator
A red LED will illuminate during an overvoltage condition when operating in the Constant AC Current mode or during an overcurrent condition when operating in the Constant AC Voltage mode. Not used in the AMPLIFIER mode.
Overload Indicator
A red LED will illuminate when the output current limit is exceeded.
High-Voltage On/Off
- Local
  Front panel switch.
- Remote
  A TTL compatible input.
Master DC Switch
Turns ON and OFF the DC generator.
Master AC Switch
Turns ON and OFF the AC generator. Not used in the AMPLIFIER mode.
AC Voltage or AC Resistive Current Mode Selection
- Local Operation
  A front panel switch.
  AC Voltage or AC Resistive Current Mode Selection
- Remote Operation
  A TTL compatible signal applied to the Mode Select input of the Remote Interface connector.
DC Bias
Adjustable from 0 to ±5 kV DC.
- Local Level Adjustment
  Two 5-turn potentiometers with dials, one for the Constant Voltage mode and one for the Constant Current mode.
- Polarity Selection
  Two front panel switches, one for the Constant AC Voltage mode and one for the Constant AC Current mode.
- Remote Level Adjustment
  A 0 to +10 V DC signal.
- Remote Polarity Selection
  A TTL compatible input.
  Local Operation (0 to±5 kV DC range)
  20 V DC dial resolution.
- Remote Operation
  Gain equals 500 V DC per each applied DC volt ± 0.5% of full scale.

GENERAL

Dimensions
134 mm H x 432 mm W x 432 mm D
(5.25" H x 17" W x 17" D).
Weight
15 kg (33 lb).
High-Voltage Output Connector
Alden high-voltage connector.
Voltage Monitor Connector
BNC connector.
Current Monitor Connector
BNC connector.
Front Panel Remote High Voltage On/Off Connector
BNC connector.
Amplifier Input
BNC connector.
Remote Interface Connector
25-pin “D” socket connector.
AC Line Receptacle
Standard three-prong AC line connector with an integral fuse holder.
Power Requirements
- Line Supply
  Factory set for one of two ranges, 90 to 127 V AC or
  180 to 250 V AC, at 48 to 63 Hz.
- Power Consumption
  100 VA.
Operating Conditions
- Temperature
  15 °C to 35 °C.
- Relative Humidity
  To 85%, noncondensing.
- Altitude
  To 10,000 meters.

CERTIFICATION

TREK, INC. certifies that each Model 615A-1 is tested and calibrated to specifications using measurement equipment traceable to the National Institute of Standards and Technology or traceable to consensus standards.

All Specifications are with no load unless otherwise noted.