Functional Overview
2-12 WFM90D and WFM91D Service Manual
Onscreen Readouts
The WFM90Da nd WFM91D use onscreen messagesto alert you to certain
monitoring conditions. Figure 2--8 shows example readout messagesand their
locations.
20
40
60
80
100
--20
--40
0
GAINUNCAL 10uS/DIVEXTREF
VX.XX
LOWBAT
10
3
6
11
8
9
DIGITAL
NOSYNC
1
GREEN
2
EDHCHK
4
>CABLE
5
ERROREDSECONDS 7
FFCRC:
APCRC:
ELAPSED:
Figure2 -8: Onscreen readout messages
1. The video message reportsthe video type. P ossible messagesare shown in
Table2--1.
2. The component readoutshows which component is selected for display
through the digital Waveformmenu: COMPOSITE, GREEN, BLUE, RED,
Y,Pb, Pr, C. The readout only appears if digital video is locked or if INPUT
CTL is set to DIGITAL.
3. The EXT REF message appears in the Waveformand Vector display modes
when the video signalis locking to an external video reference signal.
4. The EDH reportappears when EDH is turned on.
5. When the cablereport is turned on (see Configuration Menu, page 2--21)the
message displays>CABLE if the cable length is greater than approximately
200 meters. If the cableis shorter than 200 meters, thereis no readout.
NOTE. The CABLE RPT readout is meaningful only when the instrument is
operating in DIGITALmode. In ANALOG mode, you can ignore the readout.

Readout Description