3-12
BOP HIPWR 031912
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
%
, highlight password, then
!
. Enter Admin 2
password (see PAR. 3.2.4.4) and press
!
to verify. Under Menu Protection, highlight Keypad
@ Pwr-up and press F1. Highlight on of three password settings and press
$
to save. Then
press
$
to save for power-up (or
%
to exit without applying the changes). When the unit is
next powered up, pressing any keypad key or rotating the
ADJUST
control requires entry of the
password selected above before continuing. NOTE: The
#
key can still be used to adjust dis-
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. Table 3-4 defines the voltage
and current parameters used in this manual.
3.3.3
PROGRAMMING VOLTAGE OR CURRENT AND ASSOCIATED PROTECT LIMITS
From the power-up screen the settable voltage/current parameters are displayed at the bottom
of the LCD above the
HELP
message (see Figure 3-3). Use
Y
or
U
to highlight the main or
protect channel. (For BOP protect limits refer to PAR. 3.3.4.2 and for external limits see PAR.
3.3.4.3.)
1. To verify that the unit is configured for internal references press
$
from the power-up
screen and verify that Reference Input and Protection Limit are set to Internal, and External
Mode is set to Disable. If necessary to change a setting, use
Y
or
U
to highlight the
parameter, and press
!
to modify. Highlight the desired selection and press
$
to save,
then press
$
to save for power-up or
%
to exit. If analog programming is desired, refer to
PAR. 3.4.
2. Verify that the load has been configured properly to ensure that the unit behaves as
expected when the output is off (see PAR. 3.3.6 for details).
3. Press
MODE
key to select the main channel (VOLTAGE or CURRENT); the associated
PROTECT channel is automatically selected and displayed.
4. Set the output on or off as desired using the
STANDBY
key. The output is off (disabled)
when the
STANDBY
indicator is lit, on (enabled) when not lit.
5. Use
Y
or
U
to highlight the main channel. There are two ways to program the output in
local mode. These methods can be used either when the output is disabled (
STANDBY
indi-
cator lit) or enabled.:
CAUTION: WHEN THE ADJUST CONTROL IS ROTATED, THE ACTIVE PARAMETER IS
IMMEDIATELY EFFECTIVE IF THE OUTPUT IS ENABLED (ON = STANDBY
INDICATOR NOT LIT). THE VOLTAGE/CURRENT APPLIED TO THE LOAD
CHANGES AS THE ADJUST CONTROL IS ROTATED.
Summary of Contents for BOP-MG
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Page 20: ...x BOP 1K 031912 FIGURE 1 1 HIGH POWER BOP SERIES POWER SUPPLY...
Page 37: ...BOP HIPWR 031912 1 17 FIGURE 1 3 BOP OUTPUT CHARACTERISTICS...
Page 53: ...BOP HIPWR 031912 2 15 FIGURE 2 4 PARALLEL CONFIGURATION LOCAL SENSING TYPICAL...
Page 54: ...2 16 BOP HIPWR 031912 FIGURE 2 5 PARALLEL CONFIGURATION REMOTE SENSING TYPICAL...
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