Oscillator Sync Output
Connection: Terminal block on rear panel. Opto-isolated open collector output
conducts during Level B phase of internal transient generator.
Max Off State Voltage: 30V.
Collector Current: 2mA (typical).
DROPOUT VOLTAGE
The load will cease to conduct if the applied voltage falls below the Dropout Voltage setting;
active in all modes except Constant Voltage. The Dropout Voltage setting is also the threshold for
the Slow Start facility and acts as an offset voltage in Constant Resistance mode.
Setting Accuracy: ± 1% + 2 digits.
Slow Start
If the Slow Start switch is engaged, the load will not conduct any current until the source voltage
reaches the Dropout Voltage setting; it will then ramp up to the Level setting at a rate determined
by the settings of the Slew Rate controls.
METER SPECIFICATIONS
Display Type: Two 4-digit 14mm LED displays showing combinations of measured or
set-up values selected by a 5-position switch.
Illuminated annunciators display the measurement units.
Measured Values
Volts & Amps: Measured values of current through and voltage across the load.
Watt & Ohms: Power and equivalent load resistance, calculated from Volts and Amps.
Voltage Accuracy: ± 0·1% + 2 digits.
Current Accuracy: ± 0·2% + 3 digits.
Set-up Values
Level A & Level B: The two levels set by the front panel controls.
Frequency & Duty Cycle: The settings of the oscillator in the transient generator.
Slew Rate & Dropout V: Displays the slew rate setting and the value of the dropout voltage.
CURRENT MONITOR OUTPUT
Output Terminals: 4mm safety sockets on front panel or terminal block on rear panel.
Output Impedance:
600Ω.
Scaling: 50mV per Amp (4 Volts full scale).
Accuracy: ± 0·5%.
Common Mode Range: ± 3Vdc max. to input negative.
REMOTE CONTROL
External Control Input Characteristics
Connection: Terminal block on rear panel.
Input Impedance:
400kΩ each input to load negative.
Common Mode Range: ± 100V to load negative.
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