HP 16500C

Table 9-5 HP 16500C Service Request Enable Register
Bit Position Bit Weight Enables
15-8 not used
7 128 not used
6 64 MSS - Master Summary Status (always 0)
5 32 ESB - Event Status
4 16 MAV - Message Available
3 8 LCL- Local
2 4 not used
1 2 not used
0 1 MSB - Module Summary
*STB (Status Byte)
Query *STB?
The *STB query returns the current value of the instrument’s status byte.
The MSS (Master Summary Status) bit, not the RQS (Request Service) bit, is
reported on bit 6. The MSS indicates whether or not the device has at least
one reason for requesting service. Refer to table 9-6 for the meaning of the
bits in the status byte.
Returned Format
<value><NL>
<value> An integer from 0 through 255
Example OUTPUT XXX;"*STB?"
See Also Refer to chapter 7, "Status Reporting" for a complete discussion of status.
Common Commands
*STB (Status Byte)
9–16