HP 8753E - Creating Flat Limit Lines

4. Reconnect your test device.
5. To better view the measurement trace, press:
..... .... .: ““:.: ...... .::.:: ....... :: ... ..::
I-, @g@$f
Scale Ref
: !<
..
: .;
... ;:: /,,,,, i ......... ..
...
1 :$?&% :
Creating Flat Limit Lines
In this example procedure, the following flat Iimit Iine values are set:
Frequency Range
.................................................................
Power Range
127 MHz to 140 MHz
..........................................................
-27
dF3 to -21 dB
100 MHz to 123 MHz
.........................................................
-200
dB to -65 dII
146 MHz to 160 MHz
.........................................................
-200
dE3 to -65 dB
Note
The minimum value for measured data is -200 dR.
1.
2.
3.
To access the Iimits menu and activate the Iimit lines, press:
“:.~:.:...:........~.. . . ,:,::,: ,:;; .“.< ‘.“....:.~.~,..)) ..:.:.:...: (,:,,,,,. .,:,;
<<<.y <<:. :<<:. / I
; ..,.,.,..,..,.,.,.,., ,. .,. .,. _ ,.,...,.,.,.,....., * ,. /
. .
.,...,. ......,:I.,.. _ ,. ,.
. . .
csystem_) ~~~~~~~~:~;~~ ~~~~~~~~:~~~~~ ,EIJJ;~~,:~~~~~,~~~~~~~~~’ ~~~~~~~~~~~ !gg$j
. . . . _ . . . . . . . . ii .:........,.,.. .;,,.;;>z: . . . . . / .::::..: .::: & .:: .::...//......... .;.: . . . . . .>.> . . . . . . . . . . >a;; . . . . . . ,..,. ,.........,,,..........,........ ,. ,,,,,................ . . . . . . . . . . . . . . . . . . . . . . L/ . . . . . . ..A.. . . . . . . . . . . . . . . . . :::;:...i i. ;.....~.::...iii.i;::.:: .::::.::........................ .~.~.~.~_; i.z
To create a new Iimit line, press:
g&
:... . . . . . . . . . .
The analyzer generates a new segment that appears on the center of the display.
To specify the limit’s stimuhis value, test limits (upper and lower), and the Iimit type, press:
:~~~~~~~~~~~~~~~ pJ @JJ
:.:,..l.~...l,~~;;:~~;~:.::e .,.,. z,;;,.;;; . . . . . . ;;zc.i :: ;;.
,,,,,........,....... :.
.
. .._ ::.;..,. >;,.; _ ..:
../.............
~~~~~~~~ 1--21_) Ixl)
~~~~~~~ @-j @
~.~~~-“-‘:::::~:=::::~~~~”
., :. :
Note
you codd alsO set the upper md lower limits by using the ~~~~~~~~~ md
:.: . . . . <.A;..;: ..,.....: . . . . . . . . . . . .A...... .A...z.A..i
...... . . . . . . . . . . . . . . . . . . U.?.. T....
,.,,...,,...,,... ..,.,.,.,.,.,.i _,.
~~~~~~~~~~ keys. m use these keys for the entry, press:
i
"""""""""" 1--24_) @
;: . . . . . We.,/,,..,,,,,..,,,,................~.............. .:: _..... . . . . . . . . . . . .
::.:...:.:...
:::::::::::::::::::::::::::::::::::::::: @ Lxl]
: :.::::::::;..:::I:::.:.:.::..::::.,...........
,
:.., ii . . . . ..A . ..u . . . . . . . . . .:a
This would correspond to a test specification of -24 f3 dEX
Making Measurements 247