ADInstruments S7200 Operation Manual page 159

AD INSTRUMENTS S7200 TV Signal Analyzer Operation Manual
for a given digital transmitter.
Figure 6-30 Simple Emissions Mask requirements for low power 8-VSB LPTV
transmitters and translators
S7200 only support 8-VSB Simple Emission Limits, as the Figure 6-30 show. The
Figure 6-31 shows the 8-VSB spectrum mask test PASS status, the screen display a
green text "PASS", no alarm sound. If the 8-VSB signal doesn't meet the "Simple
Emissions Mask requirements", the instrument will use the speaker alarm and
display a red text "FAILED", user can tap the soft button [MUTE] to stop the alarm
sound.
If user enter the spectrum mask test function, the system judgement signal status
is "FAILED", sometimes the failed status is caused by instrument attenuator setting.
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