User`s guide

37-6
Status Subsystem
Status Subsystem - Status Byte
EMMI Status Register
Event register bit def-
initions
3 - Response timeout
2 - Mobile XON timeout
1 - NAK
0 - ACK
The STATus:EMMI:EVENt? queries the EMMI STATus buffer. When an EMMI:DATA
<data entry> occurs, one of the above bits will be set. Reading the status will clear all bits,
subsequently setting the EMMI status to idle. Based on the above bits, the status buffer
will return one of five numbers indicating the status of the last EMMI message sent by the
Agilent 8922M.
0 - There was no data sent since that last status check and there were
no events to report, or the last EMMI:DATA <data entry> had
improper format.
1 - A message was received and acknowledged by the mobile station.
Important: this does not mean that the mobile was able to understand
or perform the operation (ACK received).
2 - The Agilent 8922M attempted to send a message, but the mobile
station did not receive the message intact (NAK received).
4 - EMMI data was sent, but the XON timeout expired before the
acknowledge was received (EMMI:TIMEout:MS:XON).
8 - EMMI data was sent, but the Response timeout expired
(EMMI:TIMEout:MS:RESPonse).
NOTE This register is not available in the Agilent 8922S.
Condition register bits will hold their state until the condition changes. Event register bits
will be cleared as soon as they are read.