CMU Measurement Control
1100.4903.12 5.31 E-8
Overlapping execution CONTinue is implemented as an overlapping command like INITiate.
As a consequence, *OPC can not be used together with CONTinue.
Stepping mode
The stepping mode determines whether a measurement in the counting or
continuous mode (see section Measurement Statistics on page 5.34) is
interrupted after each evaluation period (or each statistics cycle, if cycles
comprising several evaluation periods are defined) or not. The mode is set
via the <Stepmode> parameter of the CONFig-
ure:<meas_obj>:CONTrol:REPetition CONTinuous | 1 ...
10000, <StopCondition>, <Stepmode> command:
<Stepmode> = STEP The measurement is interrupted (⇒ measure-
ment state STEP) after each evaluation period,
and the event reporting system (see p. 5.31) is
invoked. The next measurement cycle must be
started with the CONTinue:<meas_object>
command.
<Stepmode> = NONE The measurement runs according to its repetition
mode. Event reporting is invoked only when the
measurement stops (status = RDY).
Note: STEP can be set in all repetition modes (single shot, continu-
ous, counting). For a single shot measurement which is always
stopped after one evaluation period, the stepping mode has no
effect.
In function group RF Non Signalling, <meas_obj> can stand for any of the measurement objects POWer
and SPECtrum.
Event Reporting
The event reporting system specifies in which way the CMU reports that a measurement or a meas-
urement step has been correctly terminated, i.e., that the measurement status STEP or RDY has been
reached. Event reporting is configured for each measurement group individually by means of the com-
mands
CONFigure:<meas_obj>:EREPorting SRQ | SOPC | SRSQ | OFF
The parameters have the following meaning:
SRQ Service request. A service request is generated (i.e. bit no. 6 (RQS/MSS) of the status byte
(STB) is set) whenever the measurement status STEP or RDY is reached (see section Ser-
vice Request on page 5.24).
SOPC Single operation complete. The operation complete bit (bit no. 0 in the event status register)
is set whenever the measurement status STEP or RDY is reached (see section Status Re-
porting System on page 5.16).
SRSQ A service request is generated and the operation complete bit is set.
OFF No special action is taken when the measurement status STEP or RDY is reached.
Note: No action is taken if the STOP state is reached due to an explicit STOP command.
Symbolic Measurement Ready Evaluation:
If event reporting is enabled (i.e. CONFigure:<meas_obj>:EREPorting is not set to OFF), each
measurement that reaches the STEP or RDY status causes an entry in the measurement queue. The
measurement queue can be queried by means of the SYSTem:MQUeue[:COMPlete]<spec>? com-
mands described in Chapter 6.
To Next Page
Loading...
