KEPCO BIT 4886 Operator Manual - Manual (Page 59)

BIT 4886 120413
4-25
DIAG:OFFLimit:VOLT xx
(xx = decimal value)
DIAG:OFFLimit:VOLT? The decimal value allows the user to establish the actual voltage limit DAC (digi-
tal to analog converter) setting when the output is off and the unit is in current
mode. This variable is only used when bit 3 of the DIAG:OUTP register is set.
The value is calculated using the equation:
Voltage expected / Voltage max * 1.1) * 256
The DVS standard setting is 0.
The query provides one byte which indicates the actual DAC current limit setting.
DIAG:ONLimit:CURR xx
(xx = decimal value)
DIAG:ONLimit:CURR? The decimal value allows the user to establish the actual current limit DAC (digi-
tal to analog converter) setting when the output is on and the unit is in voltage
mode. This variable is only used when bit 7 of the DIAG:ERR:CURR register is
set. The value is calculated using the equation:
Current expected /(Current max * 1.1) * 256.
The DVS standard setting is 128 derived from (1.1 / 2.2 ) * 256.
The query provides one byte which indicates the actual DAC current limit setting.
DIAG:ONLimit:VOLT xx
(xx = decimal value)
DIAG:ONLimit:VOLT? The decimal value allows the user to establish the actual voltage limit DAC (digi-
tal to analog converter) setting when the output is on and the unit is in current
mode. This variable is only used when bit 7 of the DIAG:ERR:VOLT register is
set. The value is calculated using the equation:
Voltage expected / Voltage max * 1.1) * 256
The DVS standard setting is 0.
The query provides one byte which indicates the actual DAC current limit setting.
DIAG:OUTP n
(n = hex character)
DIAG:OUTP?
(Returns hex char-
acter)
DIAG:OUTP n controls the limit DAC values when the output is set to OFF. The
values can either be set to maximum or to a user determined limit value (using
the DIAG:OFFLimit commands. The SYST:SEC:IMM command sets
DIAG:OUTP n = 0.
DIAG:OUTP 0 = the default. This sets both voltage and current limit channels to
0 when the output is off. The four bits of the hex character are defined as follows:
Bit 0 = 1 sets voltage limit to maximum when in Voltage mode and the output
is off.
Bit 1 = 1 sets current limit to maximum when in Current mode and the output
is off.
Bit 2 = 1 sets voltage limit to value determined by the DIAG:OFFLimit:VOLT
command when the output is off.
Bit 3 = 1 sets current limit to value determined by the DIAG:OFFLimit:CURR
command when the output is off.
For example, DIAG:OUTP 3 = sets both voltage and current limit to maximum.
This can be useful for battery applications where the limit channel can allow the
battery to discharge the battery voltage. Using both the maximum and
DIAG:OFFLimit options (e.g., bits 0 and 2) at the same time is not recommended
- the maximum value overrides the DIAG:OFFLimit setting.
DIAG:SAV n/a DIAG:SAV stores variables established by SYST:SET. (See PAR. 4.7.3 and
B.82.)
TABLE 4-5. ENHANCED OPERATION - ERROR RESPONSE (CONTINUED)
COMMAND QUERY DESCRIPTION