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Appendix C: Options
90
764 Digital Audio Monitor User Manual
Table 30: Option 01 characteristics (Cont.)
Characteristic Description
Equalization range Proper operation with up to 19.0 dB loss at 135 MHz
using coaxial cable having 1/f
1/2
loss characteristics
with a launch amplitude of 800 mV
Return loss
(input and output)
w15 dB relative to 75 ohms, 1–270 MHz, power on
Output level
800 mV
p-p
"10%
Operating Information
The following paragraphs explain how to monitor embedded audio
with a 764 Digital Audio Monitor equipped with Option 01. Most
procedures are the same as those used for monitoring digital audio
with a standard instrument; this section emphasizes the few
differences from standard operation as discussed in the rest of this
manual.
Connect the Instrument. Connect the 764 to the digital video signal
path with appropriate 75 W coaxial cable, such as Belden 8281.
Notice that the SER. VIDEO IN and SER. VIDEO OUT connectors
make up an active loop-through, in which the output is an equalized
and regenerated copy of the input. A termination is not required on
the serial video output when the instrument is installed at the end of
the signal path.
Select the Digital Video Input and Audio Channel Group. Configure the
764 to monitor the serial video input with the following steps:
1. Switch instrument power on.
2. Press the MENU button to enter the on-screen menu hierarchy.
3. Turn the multi-function knob to highlight the Input menu
selection; then press the SUBMENU soft button (or any white
button) to enter the Input submenu.
4. Press the soft button that corresponds to the Digital Video Input
choice. Notice that the Input submenu changes to include only
Audio Source and Channels selections.