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Getting Started 33
Table 3-1. Controls and Indicators (continued)
Number Controls/lndicators Description Page
3 OUTPUT
Annunciators
Indicate which output channel has been selected for front
panel control and/or display. (Only one output
annunciator can be on at a time.)
36, 37,
83, 83
4 Power Supply Status
Annunciators
(These five annunciators
indicate the status of the
power supply).
CV - Indicates that the selected output channel is in the
constant voltage mode.
CC - Indicates that the selected output channel is in the
positive constant current mode ( + CC) or the negative
current limit ( - CC) mode.
UNR - Indicates that the selected output channel is
unregulated; i.e., it is not regulated by CV or CC control
loops.
OCP ENBLD - Indicates that the overcurrent protection
function for the selected channel is enabled.
ERR - Indicates that a programming or hardware error
has occurred and that the ERR bit in the serial poll
register has not been cleared.
37, 43,
83
37, 43,
83
43
37, 63,
83
43, 68,
84
5 Alphanumeric LCD
Display (When power is
turned on, all segments will
be displayed for
approximately 2 seconds).
Normally displays the measured output voltage and
current for the selected channel. When programmed from
the front panel, the function being programmed (e.g.
VSET), the output channel (e.g. 2), and the present value
(e.g. 2.250) will be displayed. Error conditions will be
spelled out in alpha characters.
36, 37,
43, 69,
83, 83
6 System Control Keys
(These four control keys
affect the entire power supply
and are independent of the
output selected).
ADDR - Displays the power supply's HP-IB address. You
can change the address using the numeric entry keys. You
cannot query or change the address remotely (over the
HP-IB).
ERR- Displays a programming or hardware error
message and clears the ERR bit in the serial poll register.
STO - Used in conjunction with the numeric entry keys to
store the present output voltage and current settings for all
outputs in the specified internal register (1 to 10). Each
register contains voltage and current settings for all
output channels.
RCL - Used in conjunction with the numeric entry keys to
recall the settings from the specified internal register (1 to
10). All outputs are set to the recalled values.
37, 61,
83
69, 84
63, 84
63, 84