Table of Contents
Advertisement
Introduction to Programming
The Status Model
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 29 and "Operation/Questionable Status Summary Register"
on page 29.
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 1at 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 1at 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 HP 8163A
Lightwave Multimeter and the HP 8164A Lightwave Measurement System
consists of one level. These are described in "The Operational/Questionable
Status System for HP 8163A & HP 8164A" on page 27.
As the HP 8166A 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 HP 8166A" on page 27.
Status System for HP 8163A & HP 8164A
The status system for the HP 8163A Lightwave Multimeter and the HP 8164A
Lightwave Measurement System returns the status of 2 and 5 module slots
respectively. The Operational/Questionable Status Summary Registers consist of
26
HP 8163A Lightwave Multimeter, HP 8164A Lightwave Measurement System,
& HP 8166A Lightwave Multichannel System User's Guide, E1299
Advertisement
Table of Contents
