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Functional Overview
2-12
WFM90D and WFM91D Service Manual
Onscreen Readouts
The WFM90D and WFM91D use onscreen messages to alert you to certain
monitoring conditions. Figure 2--8 shows example readout messages and their
locations.
20
40
60
80
100
--20
--40
0
GAIN UNCAL 10uS/DIVEXT REF
VX.XX
LOW BAT
10
3
6
11
8
9
DIGITAL
NO SYNC
1
GREEN
2
EDH CHK
4
>CABLE
5
ERRORED SECONDS
7
FF CRC:
AP CRC:
ELAPSED:
Figure 2- 8: Onscreen readout messages
1. The video message reports the video type. Possible messages are shown in
Table 2--1.
2. The component readout shows which component is selected for display
through the digital Waveform menu: COMP OSITE, GREEN, BLUE, R ED,
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 Waveform and Vector display modes
when the video signal is locking to an external video reference signal.
4. The EDH report appears when EDH is turned on.
5. When the cable report 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 cable is shorter than 200 meters, there is no readout.
NOTE. The CABL E RPT readout is meaningful only when the instrument is
operating in DIGITAL mode. In ANALOG mode, you can ignore the readout.
Readout Description