NUMBER
[AVG
AVGM]
Sweep av er ag ing number (1 to 512).
REPEAT av er ag ing also al lows the user to manu ally se lect the
amount of av er ag ing re gard less of the sig nal level, how ever the
dis play is up dated only when the NUMBER of read ings speci fied
have been taken (1-512).
NOTE
Due to the na ture of this method of op era tion, if the
power level changes be tween up dates, the dis play up date
will not re flect the true in put power for one mea sure -
ment only.
When a chan nel is set to a ra tio, e.g., A–B or A/B etc., the
re peat method de scribed above only op er ates if all sen -
sors are set to the REPEAT mode.
LOW
LEVEL
[AVGLL]
Se lect OFF, LOW, ME DIUM, or HIGH, Low Level Av er ag ing, in
Power vs. Time or Read out modes. Sets the low level av er ag ing
win dow for the sen sor. At reso lu tion set tings of 0.01 and 0.001
dB, digi tal read outs may flicker due to the high read ing rate of
the power me ter. Low level av er ag ing ap plies a low pass fil ter to
post- average data read ings to achieve a more sta ble front panel
dis play with out slow ing down the re sponse of the me ter to larger
changes in level. The three win dows for LOW, MEDIUM and
HIGH low level av er ag ing are ± 0.01, 0.02, and 0.05 dB.
For ex am ple: When a LOW set ting of low level av er ag ing is ap -
plied while step ping from 0 dBm to –1 dBm, the me ter dis plays
the fi nal read ing within 0.01 dB with no de lay. The fi nal set tling
of 0.01 dB will set tle over a short sub se quent pe riod of time, lead -
ing to a sta ble high reso lu tion read out.
With a HIGH set ting of low level av er ag ing, the set tling win dow
is in creased (up to ap proxi mately 0.05 dB) and the set tling time
is longer.
With low level av er ag ing OFF, the me ter dis plays the fi nal read -
ing in stantly with no fur ther set tling ob served. Any jit ter due to
noise is re flected in the dis played read ing, which may be in con -
ven ient for high reso lu tion read ings.
In Pro file and Source sweep modes, the fol low ing soft keys ap pear:
STATE
[GRSWS]
Graph av er ag ing state, ON or OFF. When set to ON, the fol low -
ing ad di tional soft keys ap pear:
4-10 ML2400A OM
SENSOR MENU OPERATION
NOTE
GPIB trig ger com -
mands au to mat i cally
ap ply RE PEAT av er ag -
ing af ter TR2 com -
mands to en sure ‘old’
sam ples are ex cluded
from the mea sure ment.
How ever, the user
should be aware that
due to the high speed
of the me ter, other in -
stru ments in the ATE
sys tem may not be set -
tled.
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