Functional Overview
WFM90D and WFM91D ServiceManual 2-13
6. The sweep rateis only displayed in the Waveform display mode. There is no
sweep ratereadout when 2 Field sweep is selected.
7. When the CRC Watchis turned on, the ERRORED SECONDS message
block appears.
8. The LOW BATmessage is displayed when the instrument is battery operated
and the remainingbattery power has reached a critically low level. The
remaining lengthof time that the instrument can be operated reliably is
dependent on thecurrent operating mode.
9. The instrument softwareversion number is displayed when the Configura-
tion menu is open with the DISPLAYcategory selected.
10. The GAIN UNCAL message appearsin the Waveform,Vector,and
Waveform-in-Picturedisplay modes when the VariableGain is on.
11. The MISSING SYNC message appears in all analog videodisplay modes
when the signal referencehas been lost. NO SYNC appears in digital modes
when analog syncis missing.
Table2- 1: Video readout messages
Message Conditions INPUT CTRL setting
DIGITAL Digitalvi deo locked to 525 on a
WFM90D; 625 on a WFM91D
DIGITALor AUTO
<name of video standard> Digital video lock to an unsup-
portedst andard
DIGITALor AUTO
ANALOG No digital video lock AUTO
UNLOCK No digital video lock DIGITAL