Analog Remote Setup Menu - KEPCO BOP 1000W Operator's Manual

2. To return to digital or local control, from the power-up screen press
ence Input and press
the change and exit.
SETTING
(BOLD = Factory Default)
REFERENCE INPUT
PIN 11
(referenced to pin 4)
PROTECTION LIMIT
PINS 5, 6, 13, 14
(referenced to pin 12)
EXTERNAL MODE
PIN 2
(referenced to pin 9)
NOTE: Power-up state for Reference Input and Protection Limit are established by Power-up Settings Menu (PAR. 3.3.7) under
General Setup Menu (Figure 3-6).
NOTE: Each time the Reference Input setting is changed, the unit generates an internal *RST
reset command (see PAR. A.11) which requires the BOP output and/or protection limits
to be reprogrammed.
When the external reference is used, the BOP functions as a power amplifier, amplifying the
external reference at pin 11 to produce the output.
The nominal (inherent) voltage gain of each model is calculated by (G
and nominal (inherent) current gain is (G
between the nominal (rated) voltage or current (E
(E ) used to produce that output.
REF
So for an external reference of ±10V, the nominal voltage gain (G
voltage gain of a BOP 36-28MG is 36/10 = 3.6. The nominal current gain (G
e.g., the current gain of a BOP 36-28MG is 28/10 = 2.8.
The external reference voltage may be d-c, a-c, or a combination of a-c plus d-c. The maximum
frequency of an a-c signal should be below the inherent frequency response of the BOP (2KHz
for voltage, 800Hz for current (see Table 1-2). For parallel or series combinations, the frequency
response is reduced as specified in the instruction manual included with the cable kit. A fre-
quency that exceeds the bandwidth of the BOP will cause the output to be distorted.
3-38
!
. Highlight Internal and press
TABLE 3-15. ANALOG REMOTE SETUP MENU
CHOICES
INTERNAL INTERNAL: Any external reference applied to the Analog I/O port pin 11 is
EXTERNAL ignored and the output is controlled using either the local front panel keypad
EXTL REF LVL (see PAR. 3.3.2) or remote SCPI commands (see Appendix B).
EXTERNAL: The external reference applied to Analog I/O port pin 11 is used to
control the output (see PAR. 3.4.3.1). The internal reference is ignored.
EXTL REF LVL: Allows the gain of the BOP to be established by the maximum
output voltage or current introduced in the main channel field. (see PAR.
3.4.3.2).
INTERNAL INTERNAL - Allows the limits to be controlled by digital signals from either the
EXTERNAL keypad (local, see PAR. 3.3.2) or SCPI command (remote, see Appendix B).
LESSER LIMIT EXTERNAL: Allows the limits to be controlled by analog signals applied to the
analog port; limits set from the keypad or SCPI command have no effect (see
PAR. 3.4.4).
LESSER LIMIT: Allows protect limit to be automatically selected from either 1)
the external analog voltage applied to the Analog I/O port or 2) the value set
from the keypad or SCPI command). Whichever limit has a lower absolute
value (closest to zero) has effect .
DISABLE DISABLE - Allows the main channel (voltage or current) to be selected by
ENABLE either the front panel MODE key or SCPI command. The condition of pin 2 of
the Analog I/O port is ignored (see PAR. 3.3.2).
ENABLE - The front panel MODE key and SCPI commands are prevented
from affecting the active channel. Mode is determined by pin 2 of the Analog
I/O port (see PAR. 3.4.2). This function cannot be saved for power-up.
$
to save. Then press
FUNCTION
) = I / E . Thus the nominal gain is the ratio
NOM-I Onom REF
or I
Onom Onom
$
, then highlight Refer-
%
to apply
) = E / E
NOM-V Onom
), and the external reference
) = E /10, e.g., the
NOM-V NOM-V
) is I
NOM-I NOM-V
BOP HIPWR 080709
.
REF
/10,