Operating instructions

IEC/IEEE-Bus Commands of HP Models R&S ESCI
1166.6004.12 6.264 E-1
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 ESCI 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 O3 or TDF P). As to the "Display Units" format, the level data of the R&S
ESCI is converted to match the value range and the resolution of the 8566/8568 series. Upon
switchover to the REMOTE state, the R&S ESCI 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).
Bei eingeschaltetem Display wird dabei die Größe des Diagrammbereichs gegenüber der
Normaldarstellung reduziert; beim Übergang auf LOCAL wird zur normalen Diagrammgröße
zurückgekehrt.