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Chapter 4, Status Reporting
Setting up an SRQ Interrupt
2. Set up the CDMA Status Register Group Transition Filters.
Sending the following command will allow the CDMA Event register to capture one condition only; a negative
transition of the Connected bit.
"STAT:CDMA:PTR 0;NTR 8"
The PTR and NTR commands select which
transitions of Condition bits will set
corresponding event bits.
Condition
Bit 3 in the CDMA Condition Register mirrors
the front-panel "Connected" annunciator. When
a call is connected, bit 3 goes positive. When a
call is dropped, bit 3 goes negative.
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Transition
Filter
Register
0
1
2
3
3
4
5
6
7
8
9
10
11
12
13
14
15
CDMA Status Register Group
OperationStatus Register Group
SMB 8
C
TR EV
EN
C
TR EV
EN
Event
Register
A negative transition from CDMA
Condition Register bit 3 will be
captured by CDMA Event Register
bit 3.
3
Enable
Registers
Status Byte Register Group
0
0
1
1
2
2
3
3
4
4
5
5
6
6
SMB
7
7
EV
EN
Summary
Message
Bit (SMB)
To bit 8 of
Operation
Status
Registers
Group
Logical
OR
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