Rohde & Schwarz CMU-K20, Operating Manual

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CMU-K20/-K21/-K22/-K23/-K24 Status Reporting System
1115.6088.12 5.7 E-10
GSM mobile tests comprise the two signalling modes Non Signalling and Signalling for each of the
function groups GSM400/850/900/1800/1900-MS so that a total of 10 secondary addresses can be
used.
In the status registers for the Non Signalling mode the following bits are assigned:
Table 5-4 Meaning of the bits used in the
STATus:OPERation:CMU:SUM1|2:CMU<nr>
sub-registers assigned to GSMxxx-MS Non Signalling
Bit-No. Meaning Symbol in
STATus:OPERation:SYMBolic...
11 RF Input Overdriven
This bit is set if the RF input level at connector RF1, RF2 or RF 4 IN
is larger than the specified
RF Max. Level plus an appropriate mar-
gin.
RFIO
12
RF Input Underdriven
This bit is set while the RF input level at connector RF1, RF2 or RF 4
IN falls below the measurement range controlled by the specified
RF
Max. Level.
RFIU
In the status registers for the Signalling mode the bit assignment is as follows:
Table 5-5 Meaning of the bits used in the
STATus:OPERation:CMU:SUM1|2:CMU<nr>
sub-registers assigned to GSMxxx-MS Signalling
Bit-No. Meaning Symbol in
STATus:OPERation:SYMBolic...
0 Call from Mobile
This bit is set while the CMU receives a call from the mobile under test.
CFM
1
Release from Mobile
This bit is set while the connection to the mobile is being released.
RFM
2
Synchronization Lost
This bit is set if the CMU had to leave the signalling state "Synchro-
nized".
SLOS
3
Location Update
This bit is set while a location update is being performed.
LUPD
7
IMSI Detach
This bit is set if the CMU disconnected from the network.
IDET
8 SMS received
This bit is set if a short message has been received but not yet read.
SMSR
10 Measurement report
This bit is set if a measurement report from the mobile has been re-
ceived.
MREP
11 RF Input Overdriven
This bit is set if the RF input level at connector RF1, RF2 or RF 4 IN is
larger than the specified
RF Max. Level plus an appropriate margin.
RFIO
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