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ACPE Adjacent Channel Power Extended
10. If no error occurred, query trace A (TRA) for the trace results of the ACPE measurement.
ACPE Measurement Results
Variable
or Trace
1CPERR
KPPWRTX
LCPMAX
LCPLOWER
k?PUPPER
‘RA
Description
A variable that indicates if setup errors occurred for the ACPE
measurement. If ACPERR is 0, no errors occurred. If ACPERR is greater
than 0, an error occurred. An ACPERR value of 1 to 7 Indicates that the
frequency span, channel spacing, or the channel bandwidth are not set
correctly. An ACPERR value of 1 to 7 indicates the following:
1
Frequency span <
(2
x channel spacing
+
channel bandwidth).
2
Channel bandwidth > 2 x channel spacing.
3
Frequency span < (2 x channel spacing
+
channel bandwidth) and
channel bandwidth > 2 x channel spacing.
4
Channel bandwidth < frequency
span/loo.
5
Frequency span < (2 x channel spacing + channel bandwidth) and
channel bandwidth < frequency
span/loo.
6
Channel bandwidth > 2 x channel spacing and channel bandwidth <
frequency
span/loo.
7
Frequency span < (2 x channel spacing
+
channel bandwidth),
channe:
bandwidth > 2 x channel spacing, and channel bandwidth < frequency
span/loo.
A variable that contains the total transmit band carrier power. ACPPWRTX
is calculated by the following:
lo
X
~o.!7(Po~eTCarrie~)
A variable that contains the relative power level of the adjacent channel
with the highest measured power level.
A variable that contains the relative power level found in the lower
adjacent channel. ACPLOWER is calculated by the following:
10 x
log(
~~~~%wer
channel
POWCT
1
carrier
A variable that contains the relative power level found
ln
the upper
adjacent channel. ACPUPPER is calculated by the following:
POW.3
10 x
log(
upper
channel
Power
1
carrier
IRA
is trace A. Trace A contains the swept RF spectrum that was used to
neasure adjacent channel power.
units
Vane
determined by
IUNITS
command
default unit is
dBm.
1B
1B
iB
determined by the
race data format
TDF) command.
Restrictions
Executing ACPE exits the following functions: windows display mode
(WINON),
N
dB
point
measurement (NDBPNT), the FFT menu measurements (FFTAUTO, FFTCONTS, FFTSNGLS),
gate utility functions (GDRVUTIL), TO1 measurement
(TOI),
marker table (MKTBL), peak table
(PKTBL), percent AM (PCTAM), or peak zoom (PKZOOM).
AUNITS
of W or V, will give incorrect results for ACPMAX, ACPLOWER, and ACPUPPER.
Programming Commands 5-39