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Introduction to Programming The Status Model
34 Agilent 8163A/B, 8164A/B & 8166A/B Mainframes, Fifth Edition
The Operational/Questionable Slot Status Event Register (OSSER/QSSER)
contains the status of a particular module slot. A bit changes from 0 → 1
when an event occurs, for example, when a laser is switched on. For
details of the function of each bit of these registers, see
“Operation/Questionable Status Summary Register” on page 38.
The Operational/Questionable Slot Enable Status Mask (OSESM/QSESM)
allows you to choose the events for each module slot that may affect the
Operational/Questionable Status Event Register (see below). If you set a
bit of the OSESM/QSESM to zero, the occurence of the corresponding
event for this particular module slot cannot affect the
Operational/Questionable Status Event Register. The default is for all the
bits of the OSESM/QSESM to be set to 0.
The Operational/Questionable Status Event Summary Register
(OSESR/QSESR) summarizes the status of every module slot of your
instrument. If, for any slot, any bit of the QSSER goes from 0 → 1 AND the
corresponding bit of the QSSEM is 1 at the same time, the QSESR bit
representing that slot is set to 1.
The Operational/Questionable Status Enable Summary Mask
(OSESM/QSESM) allows you to choose the module slots that may affect
the OSB/QSB of the Status Byte. If any bit of the QSESR goes from 0 → 1
AND the corresponding bit of the QSESM is 1 at the same time, the QSB of
the Status Byte is set to 1. If you set a bit of the OSESM/QSESM to zero,
the corresponding module slot cannot affect the OSB/QSB. The default is
for all the bits of the OSESM/QSESM to be set to 0.
The Operational/Questionable Status Enable Summary Mask for the
Agilent 8163A/B Lightwave Multimeter and the Agilent 8164A/B
Lightwave Measurement System consists of one level. These are
described in “Status System for 8163A/B & 8164A/B” on page 35.
As the Agilent 8166A/B Lightwave Multichannel System has 17 module
slots, the Operational/Questionable Status Enable Summary Mask
consists of two levels. This is described in “Status System for 8166A/B”
on page 36.