5. Press SYSTEM|CONTROL to get ac cess to the cur sor. Press << and >> to
move the se lected cur sor, and SWAP to se lect the other cur sor.
NOTE
With a CONTINUOUS trig ger such as this, there will
most likely not be spe cific points of in ter est, so the
move ment of the cur sors is rather ar bi trary.
If modu la tion is ap plied to the sig nal, or its power level
al tered, the sig nal should change on the dis play. The
sig nal may not be visi ble if it is not in the de fault range
which cov ers +20 to –50 dBm.
SCAL ING In the ex am ple above, if the meas ured power sig nal is not visi ble be cause the
power is too high or low, the scal ing can be al tered as fol lows:
1. Press SYSTEM|CONTROL|more| SCALE. There are now soft keys for TOP
and BOTTOM dB lev els, re fer ring to the top and bot tom of the screen, and
AUTO SCALE, which will op ti mize the dis played graph.
2. En ter new val ues so that the meas ured power sig nal is visi ble. The TOP
value must al ways be higher than the BOTTOM value.
3. When fin ished, press an other soft key or CLR to re turn to the dis play.
CUR SOR READ OUT To dis play the CURSOR READOUT box on the screen, press
SYSTEM|CONTROL|more|READOUT (see page 4-26 ). This is a tog gle ac tion
and will dis play or re move the cur sor data read out box from the dis play.
The read out shows a digi tal rep re sen ta tion of data at the two cur sor po si tions
on the cur rently dis played chan nel, along with the dif fer ences in power (
D p)
and time (
D t). The value of D p rep re sents the se lected cur sor read ing mi nus
the other cur sor read ing, and
D t rep re sents the time dif fer ence be tween the
two cur sors. If SENSOR|AVERAGING|be tween CURSOR av er ag ing is on, the
av er age read ing be tween the cur sors is dis played at the bot tom of the read out.
NOTE
If con tinu ous trig ger is se lected, or the dis play is chang -
ing while try ing to read the read out, se lect TRIG -
GER|MAN UAL to stop the dis play up date.
The read outs are up dated when ever the sig nal trace is
up dated, or if the cur sors are moved. It is pos si ble to
link the move ment of the cur sors so they move at the
same time. This is use ful if meas ure ments need to be
taken at spe cific times be tween the cur sors, as with
chan neled sig nals.
To link the cur sors, se lect SYS TEM|CON -
TROL|more|more|LINK CURSR . When the cur sors
are linked, a line is drawn on the dis play con nect ing the
two cur sors and they will move to gether as one. This is
5-12 ML2400A OM
PROFILE OPERATION MODE PROCEDURES
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