evertz X1201-AES4, Manual

Page: 46 / 102

X1200 Series Router Manual
Page 3-8
Revision 1.3.2
OPERATION
3.6.3. Setting up the Video Line Synchronizer Timing
(SoftSwitch

and Embedded SoftSwitch

equipped routers only)
REFERENCE
Input timing
line phase = 0
This menu item is used to set the line synchronizer acceptance range with
respect to the video reference for the V1 output on the SoftSwitch

and
Embedded SoftSwitch

routers.
Setting course phase to “1” and line phase to “0” are the standard settings. This
will allow any incoming video signal with a +/- one half line timing with respect to
the applied video reference, to switch cleanly on the V1 bus. The output on V1
will remain constant at 1 line delayed with respect to the applied video reference
signal. The timing of the V2 output is not adjustable.
The line phase has following valid values:
1202S 0 to +/-700 samples (approx. +/- 25
µ
sec)
1202H 0 to +/-940 samples (approx. +/- 12
µ
sec) for 1080 line standards
1202H 0 to +/-620 samples (approx. +/- 8
µ
sec) for 720 line standards
!
Line Phase is specific to a particular video standard. Therefore, if the Input
Standard is changed from a 1080 line standard to a 720 line standard, the Line
Phase will be reset to 0, and must be set up again for the new video standard.
!
The Course Phase and Line Phase adjustments are REAL TIME ADJUSTMENTS
and will effect router timing even without the menu EXIT AND SAVE menu
selection. The EXIT AND SAVE menu item will save the values while the EXIT
AND NO SAVE menu item will return the router to the original values. For difficult
timing situations the presets can be used for different timing setups.
3.6.4. Setting up the AES Audio Reference
(SoftSwitch

and Embedded SoftSwitch

equipped routers only)
REFERENCE
Audio Reference
lock to video
lock 48 kHz DARS
This menu is used to select the type of audio reference being used for the
SoftSwitch

and Embedded SoftSwitch

routers. These routers can accept a
DARS reference signal to insure the Z bit alignment on the AES outputs. If
video is selected, the Z bit alignment of the AES outputs is random. If DARS is
selected and the DARS reference is absent, the router will revert to video lock.
On the SS routers, for the SoftSwitch

technology to function correctly, the
audio sources must be synchronous with the chosen Audio Reference.
On the ESS routers, for the Embedded SoftSwitch

technology to function
correctly, the AES sources must be synchronous with the Video reference and
the A udio Reference for the router should be set to video . (If you are using a
DARS reference with ESS, then the DARS reference must be locked to the
video reference.) If Embedded SoftSwitch

functionality is not required (e.g.
Dolby E in the embedded stream) then the AE SoftSwitch can be disabled and
the router can function the same as a SoftSwitch

equipped router.