Instructions

5
CURRENT MONITOR OUTPUT
Output Terminals:
BNC (chassis ground) on front panel or terminal block on rear panel.
Output Impedance:
600Ω nominal, for >1MΩ load (e.g. oscilloscope).
Scaling:
250mV per Amp (4 Volts full scale).
Accuracy:
± 0·5% ± 5mV.
Isolation:
CATII (300V) to load negative.
Bandwidth limit (-3dB):
40kHz.
REMOTE CONTROL
Digital Remote Interfaces
The unit provides LAN, USB, GPIB and RS232 interfaces for full remote control.
LAN:
Ethernet 100/10base-T connection with auto cross-over detection.
1.4 LXI Core 2011 compliant.
USB:
Standard USB 2.0 connection. Operates as virtual COM port.
GPIB: Conforming to IEEE488.1 and IEEE488.2.
Capabilities: SH1, AH1, T6, L4, SR1, RL2, PP1, DC1, DT0, C0, E2.
RS232:
Standard 9-pin D connection. Baud rate: 9600.
External Control Input Characteristics
Connection: Terminal block on rear panel. Lo terminal input grounded to chassis
internally.
Input Impedance:
10kΩ. Input protected against excess input voltages up to 50V.
Isolation:
CATII (300V) to load negative.
External Analogue Voltage Control
Operating Mode:
The applied voltage sets the operating level within the range.
Scaling:
4 Volts full scale (250mV per Amp).
Accuracy:
± 2% ± accuracy of range.
Common mode rejection:
Typically better than –76dB.
External Logic Level (TTL) Control
Operating Mode:
The applied signal selects between Level A and Level B settings.
Threshold:
+ 1·5V nominal. A logic high selects Level B.
Remote Disable Input
Connection: Terminal block on rear panel.
Input to the LED of an opto-isolator through 1kΩ resistor.
Threshold:
Apply >+3V to disable the load input. Max. Voltage 12V.