Series 8035XA Peak Power Sensors
2-10
Manual 21568, Rev. F, March 2008
Setting Delay from the Peak Setup Menu
The cursor will be available immediately upon entering this menu. The sensor will not be
updated with the new delay setting until the peak menu sequence is completed. This requires
selecting the trigger mode, setting the trigger level, setting the sample delay, and setting the
sample delay offset. The display will exit to the default measurement display when you press
[ENTER] on the last menu in the sequence.
2.3.4
Setting Sample Delay Offset
The sample delay offset is settable from the menu following the
SET SAMP DLY
menu (see the
Menu Tree in Figure 2-1). The method to enter the delay offset will be the same as the method
to enter the sample delay. You can change a set of digits (XXXX.XXX), plus units.
The offset will be range checked together with the sample delay so that the total of sample
delay plus offset does not exceed the range of the sensor. If the range of the sensor is
exceeded, a beep may sound and an arrow will replace the S at the end of the line (see Figure
2-11) to indicate an out of range condition. If you exit the menu without correcting the out of
range condition, no power measurement will be made.
Figure 2-11: Sample Delay Over-Range Offset Display
For example, if the max delay available from a sensor is 100 mS and the sample delay is set to
75 mS, the maximum offset permitted is 25 mS. Anything larger will cause an arrow to be
displayed.
Each sensor has its own delay offset parameter.
2.3.5
Single Peak Sample Measurements
Measurements for a peak sensor will be performed over a number of single samples. A single
sample is defined as follows:
1.
The sensor is armed.
2.
A pulse is triggered and sampled by the sensor. The sensor informs the meter via handshaking
that a measurement voltage is available.
3.
The meter measures the voltage and computes the power from this one trigger sample.
When averaging is turned on, the averaging will be done over a number of single samples. Auto
averaging will use an increasing averaging number as the power level being measured
declines. For example, the number of samples required for measurements at 20 dBm is 1. At -
20 dBm, the number of samples will be about 32 (this could change depending on mode or
software version).
Summary of Contents for 80350A
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