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3.2.5.4
DISPLAYING METERS OR GRAPH (TIME LINE)
The top screen can be configured to either display graphical analog meters (Figure 3-3) show-
ing a coarse representation of voltage and current in addition to the digital readout, or a graphi-
cal time line (Figure 3-4). The graphical time line is not an oscilloscope type display. Instead, it
samples the output and refreshes the screen at a specified interval: 75, 30, 15, 7.5, 3.8, 1.5, 0.8,
0.3, 0.15, 0.08 or 0.04 seconds. This can be useful when executing a waveform, although it is
not a substitute for monitoring the output with an oscilloscope for precision. There is no correla-
tion between voltage and current graphs. For the best graphical representation choose the
graph time that is closest to, but greater than, the waveform time duration.
From the power-up screen, press
Highlight any of the meters or one of the graph selections and press
to save for power-up or
3.3
LOCAL MODE OPERATION
Local operation of the BOP power supply can be accomplished from the front panel via the 27
key keypad, and the ADJUST knob. All indications are provided by the 4-inch graphical display
(LCD).
3.3.1
SETTING LOCAL MODE
When the power supply is turned on, it is automatically set to Local mode. If the unit is in
REMOTE mode and the display shows F1-LOCAL, pressing
3.3.1.1
KEYPAD LOCKOUT
To prevent the unit from entering local mode from the front panel once remote mode has been
entered, refer to PAR. 3.2.4.3 and assign a password to "Keyboard @ local." Then the unit
will not permit local operation until the proper password has been entered (see PAR. 3.2.4.4).
#
NOTE: The
If the F1 key legend is F1 - LOCAL LOCK OUT, the keypad has been locked by the remote com-
mand SYST:KEYB DIS (see PAR. B.133). To unlock the keypad, either send SYST:KEYB ENAB
or turn the unit off then on again.
3.3.1.2
LOCAL PASSWORD PROTECTION AT POWER-UP
It is possible to require a password before the front panel controls can function when the unit is
powered up. From the power-up screen, press
password (see PAR. 3.2.4.4) and press
@ Pwr-up and press F1. Highlight on of three password settings and press
$
press
to save for power-up (or
next powered up, pressing any keypad key or rotating the ADJUST control requires entry of the
password selected above before continuing. NOTE: The
play contrast before entering the password.
3.3.2
SETTING VOLTAGE OR CURRENT MODE
The BOP uses two separate channels, one to set output voltage or current and one to set the
corresponding protection limit. The main channel is determined by the MODE key (in local
mode) which alternately selects either Voltage mode or Current mode or by SCPI command (in
digital remote mode). The protection channel is determined automatically by the main channel
selected. When Voltage mode is selected, the current protection channel is active, and when
Current mode is selected, the Voltage protection channel is active.
BOP HIPWR 080709
#
, then highlight the Graphic Display setting and press
%
to exit.
key can still be used to adjust display contrast before entering the password.
%
!
%
, highlight password, then
!
to verify. Under Menu Protection, highlight Keypad
to exit without applying the changes). When the unit is
#
key can still be used to adjust dis-
$
to save. Then press
sets the unit to LOCAL mode.
!
. Enter Admin 2
$
to save. Then
!
.
$
3-11
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