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HP 3325B Remote Operation Command Set
QSTB; Query Status Byte (RS-232)
The QSTB? query comm^d is used to upload the status byte over the RS-232 interface. The
HP 3325B responds to this command by returning the contents of the status register in the
form of an integer value ranging from 0 to 255. This integer, when converted to binary (base
2), represents the bits of the Status Register. This command reads the same register as the
HP-IB serial poll and clears the ERR, STOI^ START, FAIL and RQS bits of the
status b
3
de.
Command Availability
QSTB?
HP 3325B
Yes
HP 3325A
No
Table 2-40. Status Register Bit Coding
Bit
Value
Name
Description
0
1
ERR
Program or keyboard entry error.
1
2
STOP
Sweep stopped.
2
4
START
Sweep started.
3
8
FAIL
Hardware failure.
4
16
BIT4
Always zero.
5
32
SWEEP
Sweep in progress.
6
64
RQS
This corresponds to the HP-IB SRQ signal.
7
128
BUSY
Set while a command is being executed.
Table 2-41. QSTB? Response Format
1 HEAD-on response
HEAD-off response
QSTB###
###
2-54
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