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3.4.3
CONTROLLING THE OUTPUT USING THE BOP AS A POWER AMPLIFIER
The BOP can function as a power amplifier by means of the External Reference input at the
Analog I/O port. This analog signal controls the main channel of the BOP. To use the BOP as a
power amplifier see the following instructions for using the external reference: PAR. 3.4.3.1 for
fixed gain, PAR. 3.4.3.2 for variable gain by establishing the maximum full scale output.
SETTING
(BOLD = Factory Default)
MAXIMUM OUTPUT
(Cannot be highlighted)
VOLTAGE XX
CURRENT YY
TEST
DISPLAY
Status (see NOTE below)
KEYPAD
Status (see NOTE below)
INTER-
Status (see NOTE below)
FACE
SERIAL
Status (see NOTE below)
ANALOG
Status (see NOTE below)
OUTPUT
Status (see NOTE below)
REVISIONS
(Cannot be highlighted)
DISPLAY
INTERFACE
ANALOG
NOTE: Test status is as follows:
UNTESTED
Initial status when first entering menu.
TESTING
Test is running.
PASSED
Test was successful.
FAILED
Test failed.
FAIL EXT
SERIAL test failed - verify loop back connector installed (see PAR. 3.5.6.4).
3.4.3.1
FIXED GAIN USING EXTERNAL REFERENCE CONTROL
The main channel of the BOP, voltage in voltage mode, and current in current mode, can be
controlled by an external reference voltage, 0 to ±10V applied at pin 11, referenced to pin 10, of
the Analog I/O port. The input impedance for this signal is 20K ohms. This feature is enabled as
follows:
1. From the power-up screen, press
External and press
power-up) and exit. NOTE: This setting can be saved for power-up only by using the pass-
word-protected Power-up Settings menu (see {PAR. 3.3.7), otherwise internal references
are used for both main and protection channels upon power-up.
BOP HIPWR 080709
TABLE 3-14. REVISIONS/TEST MENU
CHOICES
Displays rated output voltage and current of power supply. including all slaves
XX.0
connected in parallel or series.
YY.0
Automatic test, reports status messages (see NOTE below).
Requires depressing keys indicated on LCD.
This test requires pressing every key on the keypad, plus moving the
ADJUST control clockwise and counterclockwise, with the ADJUST control
depressed and released. As the keys and control function pass the tests, the
corresponding function on the LCD is highlighted. When the last test is suc-
cessful, the LCD displays "passed." The test must be completed within two
minutes, otherwise a "Failed" indication is displayed.
Automatic test, reports status messages (see NOTE below).
Automatic test of serial port - requires installation of loop back test connector.
(see PAR. 3.5.6.4). Reports status messages (see NOTE below).
Automatic test which does not affect unit output. Reports status messages
(see NOTE below).
CAUTION: DISCONNECT LOAD BEFORE RUNNING THIS TEST. Output is
automatically programmed to +
msec, then to 0V. Reports status messages (see NOTE below).
Displays current firmware revision for display, interface and analog proces-
x.xx
sors.
y.yy
z.zz
$
$
to save. Then press
FUNCTION
E
for ~800 msec, then –
Onom
, highlight Reference Input and press
%
to apply the changes (without saving for
E
for ~800
Onom
!
. Highlight
3-37
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