Specifications

EXTERNAL ANALOG PROGRAMMING (OPTIONAL)
Inputting an external analog voltage can control the voltage and current outputs of the PD series. The outputs
are linearly proportioned to an external input voltage ranging from 0 to 10Vdc. Setting the current and
voltage parameters via the front panel or GPIB bus, to either 1) VSET to 0V, ISET to a proper value for CV
operation, or 2) setting ISET to 0A and VSET to a proper value for CC operation, the external analog-
programming mode will be activated.
To control the output voltage with the analog programming mode requires the following procedures; apply the
external 0 to 10Vdc source (Xv) between Pin-10 (positive) and Pin-12 (negative). These pins are located at
the rear I/O connector.
The output voltage is derived by the following equation:
Vout = x
v
V max
10
§
©
¨
¨
·
¹
¸
¸
The output current is derived by the following equation:
Iout = x
v
a
x
Im
10
§
©
¨
¨
·
¹
¸
¸
Variable Definition
Iout Current requirement
Xv External analog voltage
Imax Rated maximum output current
To control both voltage and current simultaneously in the external programming method requires that the
user apply two separately isolated 0 to 10Vdc supplies.
Variable Definition
Vout Voltage requirement
Xv External analog voltage
Vmax Rated maximum output voltage
To control the output current with the analog-programming mode requires the following procedure; apply the
external 0 to 10Vdc source (Xv) between Pin-11 (positive) and Pin-12 (negative). These pins are located at
the rear I/O connector.
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