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 sl ot. 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 th ese registers, see
“Operation/Questionable Sta tus Summary Register” on page 38 .
The Operational/Questionab le Slot Enable Status Mask (OSESM/QSESM )
allows you to choose the events for eac h 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 corres ponding
event for this particular modu le slot cannot affect the
Operational/Questionable Status Event Register. The default is for all the
bits of the OSESM/QS ESM to be set to 0.
The Operational/Questionable Status Event Summary Register
(OSESR/QSESR) summarizes the status of every modu le 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 modul e slots that may affect
the OSB/QSB of the Status Byte. If any bit of the QSESR goes from 0 →1
AND the corr espondin g bit of the QSE SM is 1 at the sa me 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 Agilent8166A/B Lightwave Multichannel System has 17 module
slots, the Operational/Questionable Status Enable Summary Mask
consists of two levels. Th is is described in “Status System for 816 6A/B”
on page36.