Power
Sweep
and
Pow&
Slope
Operation
Power Sweep Operation
The power sweep function allows the power output to be swept
(positive or negative) when the swept CW generator is in the CW
frequency mode. The power output of the swept CW generator
determines the maximum leveled power sweep that can be
accomplished. For this example, refer to the “Menu Map” section.
Zero and calibrate the power meter.
Connect the instruments as shown in Figure l-10.
Press
Icw
@
IGHz).
Press (POWER LEVEL)
@
m.
Press (SWEEP
TIME)
(TJ
(,,,)
(SINGLE).
Set the power meter to dB[REF] mode.
The swept CW generator is ready to produce a 4 GHz CW signal
at 0
dBm
power out, with a 2 second sweep rate whenever a single
sweep is executed. The power meter is ready to measure the power
level relative to a starting point of 0
dBm.
Press
POWER,[jKQ
Select Power Sweep and enter
0
(dB(m))
(asterisk on).
Press (SINGLE).
Watch the relative power indication on the power meter. At the end
of the sweep the power meter indicates
+7
dB. The active entry area
on the swept CW generator indicates:
-->
POWER SWEEP:
7.00 dB/SWP
Now enter
@
@
(dB(mLj)
(p
ower sweep is still the active entry
function).
Press [SINGLE).
This time the power meter indicates less than the power sweep
requested. Note that the swept CW generator is unleveled, UNLVD.
This happens because the swept CW generator’s output power at the
start of the sweep is 0 dB and the requested power sweep takes the
swept CW generator beyond the range where it is able to produce
leveled power. The range of the power sweep is dependent on the
ALC range and can be offset if a step attenuator (Option 001) is
present.
Select Power Sweep to turn this function off (no asterisk).
Press
(POWER
LEVEL)
I-]
@
@.
On the power meter, press dB[REF] to reset the reference level.
1-18 Getting Started Basic
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