GUIDE TO INSTALLATION AND OPERATION
10
| HCO-1822
•
NOTE:
for certain errors, the switch-over is delayed by 0.5 second beyond the selected duration because it
often happens that the same signal is feeding both inputs, possibly offset by a frame or two. The delay
ensures that the alternate feed is indeed error-free before switching to it. The errors affected are:
o
Video error (when detection duration is 1 second or more)
o
Black detect
o
Freeze detect (when detection duration is 1 second or more)
o
Audio silence detect
Select the
Config Auto
tab to select the Auto Mode functionality:
In the
Switch Mode
box, select:
o
Switch To:
switches to the input #2 (if it is valid)
when the alarm conditions trigger a switch
o
Switch and Return:
switches to input #2 (if it is
valid) when the alarm conditions trigger a switch,
and then switches back after a predetermined
interval, counted from the time the original input
returns to a valid state. Use the slider at the
bottom of the tab to set the interval (0 to 59
seconds, 1 to 10 minutes)
o
Toggle:
switches to the other input (if it is valid) when the alarm conditions trigger a switch. It will stay on
that input until an alarm condition appears for that input in which case it will switch to the other input again
(if it is valid).
In the
GPI Control Event
box, select whether the HCO-1822 will change to manual mode, or remain in auto
mode, when a switch is triggered from a GPI while the HCO-1822 is in auto mode.
3. Bypass
Bypass triggers relays located on the rear panel to connect the inputs directly to the outputs. The bypassed HCO-
1822 card is electrically disconnected from the Densité signal system, and can be removed from the frame with no
discontinuity in the signal path.
When the HCO-1822 is in Bypass:
•
There is no video / audio / metadata analysis
•
The PVW (preview) output is disabled
•
No signal is sent to the MSB in the frame
NOTE: Grass Valley recommends that you set the HCO-1822 in BYPASS before removing it from the Densité frame
to ensure no disruption in the signal when the card is removed and reinserted
.
The Operating Mode can also be selected using the Menu from the local control panel (see Section 3.3), and
via the GPI interface on the rear connector panel (see Section 2.2)
Figure 3.7 Configure the Auto Switch Mode
