Chapter 3 Programming Your Counter for Remote Operation
Status Reporting
3-28
Programming Guide
3
A detailed description of each bit in the Status Byte Register follows:
•
Bits 0 - 1 are not used.
•
Bit 2 (EAV) Summarizes the Error/Event Queue.
This bit is set when the Error/Event Queue is not empty.
•
Bit 3 (QSB) summarizes the Questionable Data Status Event
Register.
This bit indicates whether or not one or more of the enabled
Questionable Data events have occurred since the last reading or
clearing of the Questionable Data Status Event Register.
This bit is set TRUE (one) when an enabled event in the Questionable
Data Status Event Register is set TRUE. Conversely, this bit is set
FALSE (zero) when no enabled events are set TRUE.
•
Bit 4 (MAV) (Message AVailable) summarizes the Output Queue.
This bit indicates whether or not the Output Queue is empty.
This bit is set TRUE (one) when the Counter is ready to accept a
request by the external computer to output data bytes; that is, the
Table 3-4. Status Byte Register
BIT
WEIGHT
SYMBOL
DESCRIPTION
0
—
—
Not used
1
—
—
Not used
2
4
EAV
Error/Event Queue Not Empty
3
8
QSB
Questionable Data/Signal Status Register
Summary Bit
4
16
MAV
Message Available Summary Bit
5
32
ESB
Standard Event Status Register Summary Bit
6
64
RQS/MSS
Request Service/Master Status Summary Bit
7
128
OSB
Operation Status Register Summary Bit
Summary of Contents for 53150A Series
Page 1: ... Programming Guide HP 53150A 151A 152A Microwave Frequency Counter ...
Page 2: ......
Page 10: ...Contents x Programming Guide ...
Page 11: ...1 Before You Start ...
Page 20: ...Chapter 1 Before You Start Related Documentation 1 10 Programming Guide 1 ...
Page 21: ...2 Command Summary A Quick Reference ...
Page 41: ...3 Programming Your Counter for Remote Operation ...
Page 101: ...4 Command Reference A Dictionary ...
Page 162: ...Chapter 4 Command Reference Common Commands 4 62 Programming Guide 4 ...
Page 163: ...5 Errors ...
Page 174: ...Chapter 5 Errors Error Types 5 12 Programming Guide 5 ...
Page 184: ......
Page 186: ... Manual Part Number 53150 90002 Printed in U S A NOVEMBER 1997 ...