Keithley S540, Административное руководство

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S540 Power Semiconductor Test System Administrative Guide Section 4: Maintenance
S540-924-01 Rev. D / January 2019
4-15
Setting a custom system speed
The
LEGACY
speed mode has been deprecated in KTE version 5.8.0. If you select this mode, the
default system speed settings are used.
If you need different system speed settings than those set at the factory, you can ask your field
service engineer (FSE) to specify custom speed settings in the
icconfig_<QMO>.ini
file. Systems
upgraded from an older Keithley Test Environment (KTE) version may not have a
[SYSTEM SPEED
MODE]
section in their
icconfig_<QMO>.ini
file. This can be added, but is not necessary unless
you want to change the settings.
The system default NPLC setting is
0.01
. However, this setting differs for some commands,
source-measure unit (SMU) instruments, and ranges. See NPLC default differences (on page 4-15)
for details.
To set a custom default system speed mode, the FSE can add the following block to the top of
the icconfig_<QMO>.ini file (example):
[SYSTEM SPEED MODE]
MODE=CUSTOM
SOURCE_SETTLING=3
NPLC=0.01
ANALOG_FILTER=1
DELAY_FACTOR=0
If you have problems with correlation of data using the system speed settings from the factory, your
FSE can add the following line to your
icconfig_<QMO>.ini
file to force the system to use the
older error mode:
TSP_ERROR_MODE OFF
(in KTE version 5.6.5 or later).
NPLC default differences
There are some instances where the number of power line cycle (NPLC) default values may be
different than what is specified in the
icconfig_<QMO>.ini
file or
KI_INTGPLC
setmode modifier:
The
meas X
command always measures with an NPLC of
0.01
.
The default NPLC setting for the
intg X
and
sintg X
commands is
0.1
NPLC, except when
using the 10 nA and lower ranges on a 2636B (default NPLC of
1
).
The NPLC setting for measurements when running diagnostics is always
1
.