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Gettin
g
Familair with the Power Supply 4 - 3
4.2 FRONT PANEL LAYOUT
The followin
g
sections describe how to use the front panel control keys in
combination with the 16-character display and the annunciators concerned. To be
able to use the front panel keys, the power supply must be in the local mode. If
the supply is in the remote mode (REM text displayed), press .
If the power supply does not react after you press the LCL key, this key is disabled
remotely by the Local Lockout (LLO) command from the GPIB controller.
Pressin
g
the front panel keys when the power supply is in the remote mode, will
have no effect on pro
g
rammed settin
g
s. It is, however, possible to view the actual
settin
g
s on the front panel display, by usin
g
the front panel keys SELECT, V, I,
OVP, DELAY, UNMASK, DISP, and AUX.
4.2.1 Keyboard controls
The front panel keyboard controls the followin
g
power supply functions:
FUNCTION
KEY DESCRIPTION
OUTPUT
control To
gg
le between OPERATE and STANDBY.
Select an individual channel (applicable only
for multiple output models).
Enable/disable the selected channel
(applicable only for multiple output models).
SET output Verify/set the output volta
g
e of the selected
channel.
LCL
OPR
STBY
25
24 23 22 21 20 19 18 17
16 15
11
12
13
14
7
89 10
1
23456
ST6628
RESET
OUTPUT
SELECT
ENABLE
DISABLE
SET
V
I
OVP
OCPEN
OCPDIS
FAULT
DELAY
RESET
UNMASK
DISP
V
I
−+
−
+
LCL
AUX
7
4
1
0
8
5
2
.
9
6
3
STORE
RECALL
STEP
ENTER
ON
OFF
1
OPR
STBY
2
SELECT
24
ENABLE
DISABLE
3
V