R&S FSMR, Operating Manual

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IEC/IEEE-Bus Commands of HP Models 856xE, 8566A/B, 8568A/B and 8594E
R&S FSMR
1166.3363.12 6.2-22 E-2
Model-Dependent Default Settings
When the IEC/IEEE-bus language is switched over to an 85xx model, the IEC/IEEE-bus address will
automatically be switched over to 18 provided that the default address of the R&S FSMR (20) is still set.
If a different value is set, this value will be maintained. Upon return to SCPI, this address will remain
unchanged.
The following table shows the default settings obtained after a change of the IEC/IEEE-bus language
and for the commands IP, KST and RESET:
Model # of Trace
Points
Start Freq. Stop Freq. Ref Level Input
Coupling
8566A/B 1001 2 GHz 22 GHz 0 dBm DC (FSU)
AC (FSP)
8568A/B 1001 0 Hz 1.5 GHz 0 dBm AC
8560E 601 0 Hz 2.9 GHz 0 dBm AC
8561E 601 0 Hz 6.5 GHz 0 dBm AC
8562E 601 0 Hz 13.2 GHz 0 dBm AC
8563E 601 0 Hz 26.5 GHz 0 dBm AC
8564E 601 0 Hz 40 GHz 0 dBm AC
8565E 601 0 Hz 50 GHz 0 dBm AC
8594E 401 0 Hz 3 GHz 0 dBm AC
Notes regarding the set stop frequency:
The stop frequency given in the table may be limited to the corresponding frequency range of the R&S
FSMR .
Command LF sets the stop frequency for 8566A/B to a maximum value of 2 GHz.
Note regarding the number of test points (trace points):
The # of trace points is switched over only upon transition to the REMOTE state.
Data Output Formats
In the case of the SCPI and IEEE488.2 standards, the output formats for numerical data are flexible to a
large extent. The output format for the HP units, by contrast, is accurately defined with respect to the
number of digits. The memory areas for reading instrument data have therefore been adapted
accordingly in the remote-control programs for instruments of this series.
Therefore, in response to a query, the R&S FSMR returns data of the same structure as that used by
the original instruments; this applies in particular to the number of characters returned.
Two formats are currently supported when trace data is output: Display Units (command O1) and
physical values (command O2, O3 or TDF P). As to the "Display Units" format, the level data of the
R&S FSMR is converted to match the value range and the resolution of the 8566/8568 series. Upon
transition to the
REMOTE state, the R&S FSMR is reconfigured such that the number of test points
(trace points) corresponds to that of the 85xx families (1001 for 8566A/B and 8568A/B, 601 for 8560E to
8565E, 401 for 8594E).
IEC/IEEE-Bus Status Reporting
The assignment of status bits by commands R1, R2, R3, R4, RQS is supported starting at firmware
version 1.80. The STB command and the serial poll respond with an 8-bit value having the following
assignment:
The return value of a serial poll is to use the STB command in order to identify the reason for the
service request. The bits returned by the STB command are mapped in the same way as for the RQS
command.