HP 8591C, Руководство пользователя, Страница: 305 / 373

Specifications and Test Aids
Cable TV Measurement Specifications and
Characteristics
Precision Frequency Reference
Resolution
Accuracy
M H z 2 1
M H z 4 1 1
M H z 9 4 1
1 0 0 H z
x x c a r r i e r f r e q u e n c y + 1 1 0
H z
f 1 4 9 H z
H z
Option 704 Frequency Reference*
Resolution
Accuracy
M H z
M H z 4 1 1
M H z 9 4 1
l
Will not meet FCC accuracy requirements.
1
x x c a r r i e r f r e q u e n c y + 1 1 0
Hz
f 2 . 5 5
3 4 . 9 3
Carrier Frequency Difference
Difference Range
Resolution
Accuracy
Frequency difference between visual end aural carriers is counted
4 . 1 t o 4 . 9 M H z
1 0 0
Hz for precision frequency ref
Hz for Option 704 frequency ref
Visual-Carrier Level
Amplitude Range
Resolution
Absolute Accuracy
Relative Accuracy
The peek amplitude of the visual carrier is measured to en absolute
standard traceable to the National Institute of Standards and Technology.
- 1 5 t o
0 . 1
f o r S / N 3 0
relative to adjacent channels in frequency
relative to all other channels
Visual-to-Aural Carrier level Difference
Difference Range
Resolution
Accuracy
The difference between peek amplitudes of the visual end aural carrier is
f 0 . 7 5 f o r S / N 3 0
9 - 4