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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 GP-IB address. You
can change the address using the numeric entry keys. You
cannot query or change the address remotely (over the GP-
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