Rohde & Schwarz CMU-K20, Operating Manual

Page: 233 / 646

CMU-K20/K21/K22/K23/K24
Signalling: Connection Control
1115.6088.12 4.155 E-12
Fig. 4-70 Connection Control – MS Signal (panel, single slot)
Slot
Mode
The
Slot Mode
softkey set the mobile station under test to either
Single Slot
or
Multislot
operation. As soon as a call is established the slot mode can no longer be
changed and the softkey is disabled (grayed). The
Multislot
setting changes the
other softkeys in the
MS Signal
tab (see section
Softkey-oriented Version: MS
Multislot
on p. 4.157 ). It will come into effect only if the MS under test is capable of
multislot operation (i.e. if it supports HSCSD or GPRS).
Remote control
CONFigure:SIGNalling[:CSWitched][:TCH]:SMODe SSL | MSL
PCL
The
PCL
softkey sets (signalling states <
Call Established)
or changes (signalling
states
Call Established)
the MS output power during the connection. The softkey is
identical to the
PCL (MS)
parameter in the table-oriented version of the MS Signal
tab.
The MS transmitter output power can be selected in PCL (Power Control Level) units
or as a corresponding absolute power value (in dBm with a 2 dBm spacing); see
section
Limit Values for Average Burst Power (Power Configuration – Limits)
on
page
4.112
.
Note:
Power
measurements on normal bursts are performed at the MS output
power set via
PCL
or the corresponding parameters for multislot or
packet data mode. In contrast, the access burst is transmitted before a
call is set up. The
P/t Access Burst
measurement is performed at the
maximum power for the cell
PMAX
(see PMAX parameter on p.
4.161 )
.
Caution:
If very small MS powers are specified, the mobile station, depending on
its power class or GSM phase (phase 1 or 2, may actually transmit at a
higher power so that the CMU may be overdriven.
Example (GSM900):
The minimum level of phase 2 mobile phones is 5 dBm (PCL 19), the
minimum level of phase 1 is 13 dBm (PCL 15). If PCL 19 is set but a
phase 1 mobile station is used, this mobile will transmit at 13 dBm
(PCL 15).
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