Specifications

450 Operation Manual Rev A Page 20 8/26/99
PROBLEM/SYMPTOM POSSIBLE CAUSE
Audio sounds noisy. Channel spacing may be too
Tones, chirps, buzz, etc close. The 450 requires 280
may also be present. kHz between adjacent channel
center frequencies to meet
all specifications. At
closer spacings some of
these symptoms may appear.
The subcarrier channel may
be co-located with one of
the harmonics of a video
signal component (e.g.,
colorburst). Shift subcar-
rier frequencies and re-
evaluate.
Total baseband power may be
too high, leading to inter-
modulation products. Reduce
the level of the subcarriers
and/or video and re-
evaluate.
In systems with video, the
high pass filter in the re-
ceiver may be set OUT.
(See Section 4-17.)
Audio level and/or car- Verify correct audio imped-
rier deviation too high ance for system. (See Sec-
or low. tion 4-11 or 4-15.)
LCD display blank. Loss of power. Possible
causes include blown fuse,
incorrect line voltage
selection, etc. (See
Section 2-5.)