Input Error (Bit 5); Service Request (Bit 6); Buffer Not Empty (Bit 7) - HP 8112A Operating, Programming And Servicing Manual

Input Error
(Bit 5)
Note I
Service Request
(Bit 6)
Buffer not Empty
(Bit 7)
DTY-PERC
DTY-WIDC
DTY-TRIG
There are four types of error which set the input error bit in the
status byte. The conditions which cause them and the description
used by the HP 8112A when replying to an
listed below. The timing error bit is not latched, therefore a transient
error is only recorded by generating an SRQ.
More than one error condition can occur at one time. When using
the command ensure that you allow for a reply containing
more than one error description.
EWID-PERC
TRIG-PERC
GATE-TRIG slope
EWID-TRIG slope
This bit indicates that a service request has occurred. The bit is
latched until cleared by reading the status byte.
This bit is set when there is data in the HP 8112A input buffer.
Y
OU
can monitor this bit to determine if the instrument has finished
interpreting a lone: nroerammine: message.
Comments
Duty cycle not available in PERC. An
external voltage controls the Period and
NOT
the Duty Cycle
As above. External voltage controls the
NOT
Width and the Duty Cycle
An external trigger signal generates the
Period. The displayed Duty Cycle is
calculated from the internal Period. DTY is
not confirmed with the external period
Comments
The external trigger input signal is passed
through to the output. A Control input
cannot alter period, d.elay, or width.
Identical returns are EWID-DELC and
EWID-WIDC
Both inputs will attempt to control the
period. This is not possible.
Both EXT INPUT slopes selected. Either
leading edge or trailing edge may be
specified but not both.
As above. Either leading edge or trailing
edge may be specified but not both.
command are
Programming 6-17