Racal Instruments 1257, Manual

Page: 112 / 178

1257 User Manual
EADS North America Defense SCPI Command Basics 5-21
Test and Services, Inc.
©
2001
Waiting for Trigger Bit 5, Bit weight = 32 decimal = 20
hexadecimal
This bit is set when a Scan List has been defined,
and the 1257 has been armed, but is waiting for a
trigger. The TRIGGER:SOURCE command may be
used to select a trigger source. If the trigger source
is “BUS”, then the *TRG command will satisfy a
trigger.
Settling Bit 1, Bit weight = 2 decimal = 2
hexadecimal
This bit is set when the relays are settling due to a
CLOSE, OPEN, or SCAN operation. This bit is
cleared after the settling time has elapsed.
All of the other bits of this register are not used by the 1257. These
bits will return a value of 0 when read.
The Operation Status Enable Register enables individual bits to
pass through to the Operation Status Event Register. The bits of
the
Operation Status Enable Register are ANDed with the bits of
the Operation Status Condition Register . If both bits are set, then
the corresponding bit in the Operation Status Event Register is set.
For example, if bits 1, 5, and 6 of the Operation Status Condition
Register are set, and bits 5 and 6 of the Operation Status Enable
Register are set, then bits 5 and 6 of the Operation Status Event
Register will be set.
The Operation Status Event Register latches the status
information. Once a bit is set in the Operation Status Event
Register , it remains set until the bit is cleared by reading the
register with the STATUS:OPERATION:EVENT? query, or by
sending the *CLS command.
When any of the bits of the Operation Status Event Register are
set, bit 7 of the Status Byte Register will be set.
The Questionable Status Register is not used by the 1257. When
the Questionable Status Condition Register or Questionable Status
Event Register are read, they will return a value of 0. The
Questionable Status Event Register may be programmed and
queried, but will have no effect on the operation of the 1257.
The STATUS:PRESET command is implemented for SCPI
compliance only.
The following SCPI command tree shows the syntax of the SCPI
STATUS commands: