Chapter 3 Programming Your Universal Counter for Remote Operation

Status Reporting

Note that this is the only bit in the Operation Status Register which is not representing a condition. Therefore, the transition filters have no effect on this bit.

The Counter does not monitor the condition indicating whether the last measurement was in or out of limit. Hence, the In Limit Event bit does NOT represent the transition from an “out of limit measurement” to “in limit measurement.”

∙Bits 11–15are not used.

Questionable Data/Signal Status Register Group

The Questionable Data/Signal Status Register Group monitors

SCPI-defined conditions.

Table 3-8 lists the Questionable Data/Signal Status Register bits and briefly describes each bit.

Table 3-8. Questionable Data/Signal Status Register

BIT

WEIGHT

DESCRIPTION

 

 

 

0

 

Not used

 

 

 

1

 

Not used

 

 

 

 

 

Time (Time Interval, Rise Time, Fall Time, Pulse Width,

2

4

Duty Cycle, and Period)

 

 

 

3

 

Not used

 

 

 

4

 

Not used

 

 

 

5

32

Frequency (only Frequency; not Frequency Ratio)

 

 

 

6

64

Phase

 

 

 

7

 

Not used

 

 

 

8

256

Calibration Error

 

 

 

9

 

Not used

 

 

 

10

1024

Out of Limit Event

 

 

 

11–13

 

Not used

 

 

 

14

16384

Command Warning

 

 

 

15

 

Not used since some controllers may have difficulty

 

 

reading a 16-bit unsigned integer. The value of this bit

 

 

shall always be 0.

 

 

 

3-32

Programming Guide