Step 3. Performing Channel Calibration (Important!) - HP E1313A Manual

Usage Example

Step 3. Performing Channel Calibration (Important!)

Operation and
Restrictions
How to Use *CAL?
What *CAL? Does
Chapter 3
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
Program must put table constants into array table_block.
DIAG:CUST:LIN 1, table_block
SENS:FUNC:CUST 1,(@124:131)
INITiate then TRIGger module
(also performed using
*CAL?
important step. generates calibration correction constants for all
*CAL?
analog input and output channels.
HP E1313/E1413 to deliver its specified accuracy.
*CAL? generates calibration correction constants for each analog input
channel for offset and gain at all 5 A/D range settings. For programmable
input SCPs, these calibration constants are only valid for the current
configuration (gain, and filter cut-off frequency). This means that
calibration is no longer valid if you change channel gain or filter settings
( or
INPut:FILTer INPut:GAIN
function or range (using
[SENSe:]FUNCtion:...
becomes invalid if you move these SCPs to different SCP locations.
For analog measurement excitation SCPs (such as the HP E1505)
also generates calibration correction constants. These calibration constants
are valid only for the specific SCPs in the positions they are currently in.
The calibration becomes invalid if you move these SCPs to different SCP
locations.
When you turn power on to the HP E1313/E1413 after you have first installed
your SCPs (or after you have moved SCPs), the module will use approximate
values for calibration constants. This means that input and output channels will
function although the values will not be very accurate relative to the
HP E1313/E1413's specified capability. At this point, make sure the module is
firmly anchored to the mainframe (front panel screws are tight), and let it warm
up for a full hour. After it has warmed up, execute
The *CAL? command causes the module to calibrate A/D offset and gain,
and all channel offsets. This may take many minutes to complete. The
actual time it will take your HP E1313/E1413 to complete
on the mix of SCPs installed.
measurements of the internal calibration sources for each channel and must
allow 17 time constants of settling wait each time a filtered channel's
calibration source changes value. The
sophisticated and results in an extremely well calibrated module.
,(@116:123) Send table to HP E1413 for
channels 16-23.
Link custom EU with channels
24-31 and set the 1V A/D range.
then
CAL:SETup CAL:SETup?
*CAL? must be performed in order for the
), but is still valid for changes of channel
commands). The calibration
*CAL?
performs literally hundreds of
*CAL?
procedure is internally very
*CAL?
Using the HP E1313/E1413
) is a very
*CAL?
*CAL?
.
depends
*CAL?
81