79
A
System Option 002
General Information
This option facilitates the operation of the power supply in an automated system. Four major circuit blocks provide:
1 ) remote analog programming of the supply's output by three different control methods; 2) signals indicating the power
supply modes and conditions; 3) two different digital methods of remote control; and 4) the outputs of three bias supplies
for use with external circuitry.
The power supply equipped with this option can be operated from either a 6940B Multiprogrammer equipped with a
69520A power supply programming card or a 6942A Multiprogrammer equipped with a 69709A power supply
programming card.
Remote Programming. Through this interface both the output voltage and current can be remote programmed by either an
external voltage source, resistance, or a current sink.
Status Indicators. Six optically isolated lines provide open-collector digital outputs which indicate the following states:
constant voltage mode, constant current mode, output unregulated, ac dropout, overvoltage, and overtemperature.
Remote Control. Two optically isolated methods of remote control are available. 0ne method requires a negative going
edge, which sets a latch on the 002 card to inhibit the power supply. The latch and OVP are reset by a negative-going pulse
on another input line. The second method of remote control requires a low logic level to inhibit the power supply for the
duration of the low level.
Bias Supplies. The outputs of three bias supplies are also available at the option connector. These outputs are + 15V, -15V,
and +5V.
Monitoring. The 002 Option Board provides two monitoring outputs (I.MON. and V.MON) available at the option
connector. They both vary from 0 to 5V corresponding to a 0 to full scale output.
Other modes of operation, such as multiple supply system control, are described in detail in later paragraphs. Modes such as
Auto Series, Auto Parallel, and Auto Tracking Operation are described in the Operating Manual.
Specifications
Table A-1 provides specifications for the Option 002. This table is referred to periodically throughout the text of this
Appendix.
Option 002 Hardware
The Option 002 hardware consists of a single printed circuit board installed at the right side (facing the front-panel) of the
chassis. Two cables connect the option board to the A2 control board at A2J1 and A2J2. Connections between the option
board and external circuits are made via the 37-pin connector mounted on the option board and available at the rear of the
power supply. A mating connector is also included for the user's convenience.
