3
Output Protection:
Output will withstand an applied forward voltage of up to 70V.
Reverse protection by diode clamp for reverse currents up to 3A.
Over-voltage Protection
(OVP):
Range 1V to 65V. Resolution 0.1V; accuracy: 0.2% ± 0.2V.
Response time typically 100
µ
s.
Over-current Protection
(OCP):
Range 2A to 55A. Resolution 0.1A; accuracy: 0.5% ± 0.2A.
Response time typically 100ms.
Over-temperature Protection:
The output will be tripped off if a fault causes the internal
temperature to rise excessively.
Temperature Coefficient:
Typically <100ppm/°C
METER SPECIFICATIONS
Display Type:
5-digit (Volts), 4-digit (Amps), black-on-white backlit LCD.
Voltage (CC Mode and
Unreg):
Resolution 1mV
Accuracy: 0.1% of reading ± 2 digits
Current (CV Mode & Unreg):
Resolution 10mA
Accuracy: 0.3% of reading ± 2 digits
V x A:
Resolution 0·1W
Accuracy: 0·5% ± 0·1W
V/A:
Meter shows calculated nominal V/A value, together with
uncertainty range; 5 digit resolution.
LOGIC CONTROL INPUT and OUTPUT
LOGIC IN is a rear-panel opto-isolated input with
an 820Ω resistor in series that is activated at an
input voltage greater than approximately 3.3V. The maximum voltage that can be applied without
damaging the unit is 20V and the input should not be taken negative by more than 3V. User can
set LOGIC IN (via the keyboard) to enable the output, disable the output, or be ignored when it is
activated.
LOGIC OUT is an isolated rear-panel open-collector output that will sink up to 2mA when
activated (‘switch closure’); the maximum voltage that can be applied to LOGIC OUT is 30VDC.
User can set LOGIC OUT to be ‘closed’ or ‘open’ for output enabled or disabled, current limit (CC
mode), power limit (UNREG mode), or for any fault trip.
ANALOG REMOTE CONTROL and MONITORING
Non-isolated inputs and outputs to set voltage and current limit and to monitor actual output
voltage and current. These signals are referenced to the positive output and have a range of 0 to
10V or 0 to 5V (selectable via the keyboard).
Analogue Control Accuracy:
Voltage: 0.3% ± 4mV; Current: 0.5% ± 40mA
Analogue Monitor Accuracy:
Voltage: 0.3% ± 4mV; Current: 0.5% ± 40mA
KEYBOARD & ROTARY CONTROL
All functions, including the selection and set-up of the remote control interfaces, can be set from
the keyboard. The rotary Jog control can be used to adjust output voltage and current settings in
a quasi-analogue mode.
