HP 8753E manual ~~~~~~~~~~~ ~~~~~~~, Press LMenu ~~~~~~~~~~ gaw,, $, Optimizmg Measurement Results

14.	To set the CW frequency before going into the power sweep mode, press:
	./.::: :,.v	,. ;_ ;_
	g) ::~~~~~~~~~~~ ~~~~:~~~
		. .
15.		~ .., :,,,, ,,
	Press LMenu) ~~~~~~~~~~ gaw,,;:; $* ..
		i.:.
16.	Enter the start and stop power levels for the sweep.

Now channel 1 is displaying a gain compression curve. (Do not pay attention to channel 2 at this time.)

17. ‘lb maintain the calibration for the CW frequency, press:

a

_

:;,; ;;,:=;

‘j .yj:,;;; ;:: iy : “;;,J

~ .i ::

~:~~~~~~~6

./ :

::..‘;..

K ;~~~ ~~~

mif

..A..

z<<<...

..I

:.... :.:::.

......:...: .:.......:<.....< ...

..:

.. ..~....

18. Rress cmJ (j-1 ~~~~:~~~~~.~~~ :~~~:..~~~~,~~~;

::::./

s.>>>..: .A w;>.::.. ii/.::::: .:: :::

~.~T~S.> :..v; 0

...........//.. ............................ i;./ SWAS//S..% .,.,.,.,L _.:.:

,,...,.,.,.,.,.,.,.,.,.,.,,.,.,.,.,.,.

/,;.. ,,,.. ./ ,..,..,...

,..;

.

._

.

19. If ,~~~~~~~

:&;i&@ was sele&ed,

press k&$$ ~~~~~~.. ~~~~~~~,~~~~~:

i.ii...i

....

,.,...... .:.s. L,i,i .,,, ..:

_~

.,.,

_;,.....;:::.

/

,.

_

.._

*

/ _

,,

*

/ *

L....?

:::

.::.

:::. .:::::.:

a.

20- Press m ::~l!Jl%E;.,,~Q&~fi;~

,. ,...

_., *

Now channel 2 displays absolute output power (in dDm) as a function of power input. :,,,, ,, /,.,. :.:.:.:.:.:.:.:.:.:.::.:...:~:::::....::::::::::.::..:::::::.::. ..I

21.Press (scalef) :2X$@il$$f~~~,’ Llo) Ixl) to change the scale of channel 2 to 10 dR per division.

.: :.::::: :..: ::.:

22.Press @iii) @ Ixl) to change the scale of channel 1 to 1 dB per division.

Note

A receiver calibration will improve the accuracy of this measurement. Refer to

Chapter 5, “Optimizmg Measurement Results.”

/ *,.,.;I........./; : w ,....,..A

.,w; ,...........,, .,.,.,....:.:.:.:.:.:,

:::::::. :.::. :.:.:.::

:..: .:.

:::::.:;: ; ::

‘:,~,.,~,~.,~~.~;,‘,,,. :<..:

,.

i.,..,...,.

.,./,..

J

. . . . . ., ,,,;. /....

/ ,. ,A..

23. press cm) ~~~~~~~~~~ ‘~~~~~~~~.

..,...,,; ..,.:..,.,.:.._. i ,

_.....::::: ..A.,......A.i

..A..A...A.>.....A

...v;..:...

A..c.....z;;....

...>..:

,.... .:

s..... ..A...%........;;. .. . . .i .....Li..

i..:.. ..:.:.,.

::.:..::::::

24. lb hnd the 1 dB compression point on channel 1, press:

. ...::::::;.; (_ .:::.

..:< <::.. ‘” “‘:,:,.,.,.,.,.,.

.,.,.,,,.,.,.,.,.,.,.,.,, _

,.

cm- ~~:,~~~~: ~~~~~.

..-.......-

.._

::::. :::..

::::.. ::

i

.’

.~~~~~

LMarkerJ ~~~~~:~:,:: ~~~: ::

/ ..,,,;.,.,.,.,.,.,.,

._/

,

._. ..

:. _

/

..,,., .,._; _..

(j-j) ~,~~~~~ ~~~~~~~~; L-11 Lxl]

._......_,..........” _ _ _

,..._.; .............~....

...~......A.*;:........;..::

....A..I.:..:. !T

....... :.::::.:

..::::::

Notice that the marker on channel 2 tracked the marker on channel 1.

_/,, ._

,,...,.,.,..,.

_

i ..J../;. :;

25. ~~~~ L-1 L-) ~~.~~~~~~ ~~~~~~.~~~.

..A...;:......:.i ii

....li.:,......:.... >;>::z...A

>..;;>....~~...>.~.~....~

.:...m ......A..

i....A..

:.A....>&ii........A..

~.~.~.~.~..~.....~.~~...

i.~..A

~.......i..; i

26. lb take the channel 2 marker out of the A mode so that it reads the absolute output power

of the amplifier (in dBm), press:

_ )::::~,.~,.. )p (Marker_.)~~~~~~~~~~~~~~~~’

Making Measurements 2-57