Справочник Пользователя для Rohde & Schwarz Inc SLV8000

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The maximum permissible deviation of the input amplitude from the nominal amplitude is
equal to ±50%. A smaller input amplitude can result in no vision signal being detected or
the quality data not being complied with.

For a larger input amplitude, the input signal can be clipped during analog/digital conver-
sion. This will cause signal components to be lost. Clipping of the input signal is indicated
using the Clipping status indicator.

In addition, the input signal may have superimposed on it an interference signal with fre-
quencies up to 300 Hz and a peak voltage of a maximum of 30% of the input amplitude as
well as white noise that is band-limited to 6 MHz with a maximum level of –26 dBm.

The current input amplitude is measured in a selected scanning line in which the white pulse
is located. The measured values for the current sync pulse amplitude and the white pulse
amplitude can be displayed.

– Selecting the scanning line: see "TV Settings > ATV > Vision > White Control"
– Displaying the measurement values: see "TV Settings > ATV > Vision > Sync Pulse"

The menu windows in the TV Settings > Input > Sound menu are used to set the param-
eters for audio signal processing in the ADTV coder according to the respective standard.

The TV Settings > Input > Sound menu branches to the following menu windows:

– Input B|G, D|K, I, M1: Used to set the nominal input levels for the AF signals and to ad-

just the pre-emphasis and low-pass filter

– Input M, N: Used to set the nominal input levels for the AF signals and to adjust the pre-

emphasis and low-pass filter

– Input M, N BTSC: Used to set the nominal input level for the BTSC signal
– Input NICAM Mod: Used to set the nominal input levels for the AF signals and to adjust

the pre-emphasis and low-pass filter

– Input NICAM Cod: Used to set the nominal input levels for the AF signals and to adjust

the pre-emphasis (FM and NICAM) and the low-pass filter (FM)