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Signalling: Power Measurements
CMU-K20/K21/K22/K23/K24
1115.6088.12 4.110
E-12
The info box indicates the results for the scalar measured values:
Avg. Burst Power
Average burst power, depending on the display mode set (see
upper right corner of the diagram).
Time of Arrival
Time offset (in symbol periods) between the expected and the
measured timing of the current burst from the mobile. Like in a
real GSM network, the timing advance of the mobile is assumed
to be unknown and the expected timing is in line with the timing
of the BS signal. See also definition of the
Timing Advance Error
in section
Measurement Results
on page
4.115
.
TSC detected
Training sequence of the measured RF signal.
Remote control
Settings are read out using the query corresponding to the setting command
(setting command with appended question mark).
For scalar measurement results:
READ[:SCALar]:POWer:ABURst[:GMSK]?
CALCulate:POWer:ABURst[:GMSK]:LIMit:MATChing?
FETCh[:SCALar]:POWer:ABURst[:GMSK]?
SAMPle[:SCALar]:POWer:ABURst[:GMSK]?
Measurement
curves (arrays)
The measurement result is displayed as a continuous measurement curve in the
test diagram together with the limit lines, markers, and the D-line, if defined. The
curve is derived from 428 equidistant measurement points with a ¼ spacing
covering a time range between –10 symbols and 96 ¾ symbols.
The measurement curve in the
Power
measurement menu shows the measured
burst power (in dB) as a function of time (in symbol periods). The displayed result
depends on the test settings. The display mode for the measurement curve
(Minimum, Maximum, Average, Current)
is indicated in the upper right corner of the
diagram.
The scale of both axes can be changed via the
Display Area
hotkey.
Remote control
READ:ARRay:POWer:ABURst[:GMSK]...?
READ:ARRay:POWer:ABURst[:GMSK]:LIMit:MATChing:...?
FETCh:ARRay:POWer:ABURst[:GMSK]...?
SAMPle:ARRay:POWer:ABURst[:GMSK]...?
Measurement Configurations (Power Configuration)
The popup menu
Power Configuration
contains three tabs to determine the parameters controlling the
power measurement including the tolerance limits.
The popup menu
Power Configuration
is activated by pressing the measurement control softkey at the
top right in the graphical measurement menu
Power
twice. It is possible to change between the tabs by
pressing the associated hotkeys.
深圳德标仪器
135-1095-0799
Summary of Contents for CMU-K20
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