Interface 150821/A4 Page 75 of 110
Standard Operation Status Registers
There are two Standard Operation Status Registers: Operation Status and Questionable Status.
The Questionable Status group is accessed using the STATus subsystem commands. Both the
Operation Status and Questionable Status contain a condition register, an event register and an
enable register.
The condition register reflects the internal status of the 1730T LCR Meter. Each time the status
of the 1730T instrument changes then the condition register will changes from a “1” to a “0” or
from a “0” to a “1”. The bits of the event register correspond to the bits of the condition
register. When a condition register bit changes from a “1” to a “0” (all bits except 8 & 9), a
transition filter reports an event to the event register. Bit number 8 & 9 change from a “0” to a
“1”. The enable register enables the corresponding bit in the event register to set the status
summary bit (bit 7 or 3) in the Status Byte Register.
Standard Operation Status Register
0123415 Enable Register
Condition Register
Logical OR
15 14 4 3 2 1 0
15 14 4 3 2 1 0
Event Register
Transition Filter
14
Summary Bit
in Status Byte
Figure 3-2c: Standard Operation Status Register
Tables 3-7: Standard Operation Status Register Assignments
Bit No. Bit Weight Description
10-15 -- Always 0
6 -- Always 0
5 32 Waiting for Trigger: Set when 1730T can accept a trigger
4 16 Measuring: Bit is set when 1730T is making a measurement
3 8 Always 0
2 4 Ranging: Bit is set when 1730T changes range
1 2 Settling: Waiting for test signal to stabilize before making a measurement
0 -- Always 0
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