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Using E9300 E-Series Power Sensors
142
Keysight N1913/1914A User’s Guide
5
Press
to display the
Meas Avg Count
pop-up.
6
Use the numeric keys to enter the required value.
7
Press
to complete the entry.
Procedure
Switch off step detection as follows:
1
Press
. On dual channel meters, select the required channel.
2
Use the
and
keys to select the
Step Detect
setting field.
3
Press
to check the step detection to
Off
.
4
Press
key to close the
Channel Setup
screen.
Achieving Stable Results with GSM Signals
Signals with a pulse repetition frequency (PRF) close to a multiple or a
submultiple of the 440 Hz chopper-amplifier signal generate a beat note at a
frequency between the PRF and 4F400Hz0 Hz. Control over the filter settings is
again required to obtain stable results.
Enter
NOTE
Ensure that the filter is not reset when a step increase or decrease in power is
detected by switching the step detection off.
Tip
The PRF of a GSM signal is approximately 217 Hz and thus requires
more averaging than most other TDMA signals. To achieve a stable
measurement use the filter setting procedures to set the
.
Experimentally, a
setting of 148 gives optimum results
although settings in the order of 31 or 32 give acceptable results if a
faster measurement is required.
Length
Length
Содержание 1914A
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