HP 8591C User Manual

Visual Carrier Level and Visual-to-Aural Level
Difference Test Description
The visual carrier level test measures the peaks of the visual carrier, as well
as the visual-to-aural level difference.
To perform the visual carrier level and visual-to-aural level difference test, the
analyzer does the following:
1. Changes the resolution bandwidth, video bandwidth, and sweep time of
the analyzer to capture the levels accurately.
2. Measures the visual amplitude level and aural carrier difference.
Figure 8-1 shows the analyzer measuring the visual carrier level and aural
carrier difference.
16:34:36 DEC 86. 1993
&' CHANNEL 8 (STO) MKR 55.275 MHz =
REf 34.4 dSmV b AT i0 dB 34.59 dErV
NEXT
PERK
CHANNEL
LOG i ,,,:... ..I . ...,,,: ., ,,:....
:.. ..: . . . . . .
SCRRMGLO
YES NQ
FREQ
ON m
CENTER 57.888 MHz
SPAN 6.888 NHz
YRES GW 388 kHz
WVBW 3 MHz
WSWP 38.8 nsec RT
Figure 8-1. Measuring the Visual Level and Aural Carrier Difference
In channel measurement mode, the test runs continually and test results are
updated after each test cycle (after each sweep).
8-3

HP 8591C Specifications

General

Brand	HP
Model	8591C
Category	Measuring Instruments
Language	English