Keysight Technologies AC6801B, Operating And Service Manual

Page: 61 / 197

Output Coupling Error Checking
Changing output coupling from AC+DC requires no error check. Otherwise, changing to DC coupling
runs the Volts DC settings error check, and changing to AC or AC+DC runs the Volts AC settings error
check.
Coupled Parameter Error Checking
Inactive parameters generally are not checked for being within range or compliant with soft limits even
if soft limits are active for the parameter type. This minimizes nuisance error messages when setting
values for inactive parameters. Instead, checks are performed when the parameter is made active.
However, parameter entries are always checked for being within the MIN and MAX values even if the
parameter is inactive. For example, VOLT:TRIG must be from 0 to 310, even if VOLT:MODE is FIXed.
If coupled parameter settings change, the instrument check on each active parameter setting.
For AC+DC mode, the peak value (√2×AC +|DC|) cannot exceed 389 V.
For AC mode, the voltage setting must be from 0 to the full scale value of the range, and for DC mode,
the value must be between the positive and negative full scale value of the range.
Checks are performed in the following order:
1.
The Coupled Parameters Error Checking is performed first.
2.
Depending on the pending front-panel entry or remote command and the instrument’s operating
status, the Coupled Parameters Error Checking may lead to the other error checks.
3.
In some cases, multiple passes through the Settings Error Check are required. For example, if
OUTPut:COUPLing is changing from AC to ACDC and VOLT:OFFSet:MODE is STEP, then both the
IMMediate and TRIGgered values for DC volts are checked for being within range and for meeting the
peak voltage constraint for the currently selected range. These checks occur before the
OUTPut:COUPLing change is accepted.
Keysight AC6800B Series Operating and Service Guide 61
1 Getting Started