Agilent Technologies J-BERT N4903B Wartungshandbuch Seite 28

  • Herunterladen
  • Zu meinen Handbüchern hinzufügen
  • Drucken
  • Seite
    / 406
  • Inhaltsverzeichnis
  • LESEZEICHEN
  • Bewertet. / 5. Basierend auf Kundenbewertungen
Seitenansicht 27
Status Byte
The Status Byte is the summary register to which the other registers report. Each
reporting register is assigned a bit in the Status Byte Register.
The bits in the Status Byte byte have the following meaning:
Table 1
Bit Mnemonic Description
0 Not used
1 Not used
2 EAV Error available: The error
queue contains at least
one message.
3 QUES A bit has been set in the
Questionable Data Status
register (indicates that a
signal is of questionable
quality).
4 MAV Message available: There
is at least one message in
the message queue.
5 ESB A bit in the Standard Event
Register has been set.
6 SRQ or MSS Value depends on the
polling method; see below
for details.
7 OPER A bit in the Operation
Status Register has been
set.
Bit 6 has two definitions, depending on how the access is polled:
Serial Poll
If the value of the register is read using the serial poll (SPOLL), bit 6 is referred
to as the Service Request (SRQ) Bit. It is used to interrupt and inform the active
controller that the instrument has set the service request control line, SRQ.
3 Recommended Programming Techniques
28 Agilent J-BERT N4903B High-Performance Serial BERT
Bit 6
Seitenansicht 27
1 2 ... 23 24 25 26 27 28 29 30 31 32 33 ... 405 406

Kommentare zu diesen Handbüchern

Keine Kommentare