7700 MultiFrame Manual
7707VAT Digital Video and AES Audio Fiber Transmitter
Revision
2.3
Page-21
7.4.
SELECTING THE AES INPUT CONFIGURATION - BALANCED OR UNBALANCED
(7707VAT and 7707VAT-U)
The AES TERM jumpers J26 and J27 located near the rear of the module are used to configure whether
AES inputs are balanced (110 ohm) or unbalanced (75 ohm).
AES TERM:
To configure the AES inputs for use with balanced AES signals which conform to AES3-
1992 set the jumpers to the 110 position.
To configure the AES inputs for use with unbalanced AES signals conforming to SMPTE
276M set the jumpers to the 75 position.
"
The AES TERM jumper should always be set to the 75 position on the 7707VAT-U
7.5.
SETTING THE BALANCED AES INPUT LEVEL SENSITIVITY
(7707VAT and 7707VAT-U)
When the jumper is in the 110 position the AES LEVEL jumpers J24 and J25 control the sensitivity of the
inputs. When the AES TERM jumpers are in the 75 position the AES LEVEL jumpers do not have any
effect.
AES LEVEL:
These jumpers are normally set to the HI position for use with 2 to 7 volts balanced signal
levels. For signals levels in the 1 to 2 volt range, set these jumpers to the LO position.
"
The AES LEVEL jumper should always be set to the LO position on the 7707VAT-U
