2005

(3)

Select a programming resistance by multiplying the

desired output voltage by 1000 (the programming constant

is 1000 ohms per volt). A constant current of 1 milli-

ampere will flow through this resistance, and its wattage

rating should be chosen to minimize drift due to heating.

(4)

Connect the external programming resistance between the

RV and S+ terminals using twisted, shielded wire. Connect

the shield to the G (chassis ground) terminal to minimize

output ripple.

(5)

Turn on the power source.

CAUTION

IF THE REMOTE PROGRAMMING CONNECTIONS ARE OPENED WHILE THE

SUPPLY IS OPERATING, THE OUTPUT VOLTAGE WILL RISE SLIGHTLY

ABOVE THE SET VALUE. WHEN A SWITCH IS USED TO SELECT

RESISTORS FOR OUTPUT VOLTAGE PROGRAMMING, IT SHOULD HAVE

SHORTING TYPE CONTACTS TO AVOID VOLTAGE SPINES.

e.

Current Limiting : The maximum output may be limited to a

value below 500 milliamperes as follows:

(1)

Turn on the power source and set the meter switch to MA.

(2)

Depress the CURRENT LIMIT SET button and adjust the

CURRENT LIMIT ADJ control until the meter indicates

the maximum desired output current. Release the

CURRENT LIMIT SET button.

645

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