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USER MANUAL
HCO-3931 |
11
2
Installation
Installing the Rear Connector Panel
Each Grass Valley Densité-series card is associated with a rear connector panel, which must be installed in the
Densité frame before the card can be inserted.
The HCO-3931 and its associated rear connector rear panel must be mounted in a Densité-3 or Densité-3+ series
frame. The following rear connector panels are available:
HCO-3931-3DRP-H: Double-width Densité-3 rear HD-BNC connectors. This active rear features electronic
latching bypass relays.
HCO-3931-3TRP-HR: Triple-width Densité-3 rear HD-BNC connectors. This passive rear features hardware-
based latching bypass relays.
See 2.3 - Rear Connector Panels on page 12 for for details about the signal connections available on this panel.
All cards and rear connector panels can be installed with the frame powered on. The card has connectors that plug
into a mid-frame motherboard to distribute power and connect to the controller card, as well as a second connector
that plugs directly into the rear connector panel for input and output.
To install the connector panel:
The rear connector panel must be installed with the card out of the frame.
1. If a card is installed in the slot for which the rear connector panel is being changed, it must be removed. Tilting
the swivel handle on the front of the card to lever the connectors apart, and then use the handle to pull the card
straight out of the slot.
2. Remove the existing rear connector panel (either blank or belonging to an existing card that is being changed)
by releasing the captive screw(s) at the bottom (Densité3+ or Densité-3+FR4) or on the side (Densité-3+FR1) of
the panel.
3. Position the new rear connector panel and secure it in place with the captive screw(s) at the bottom or on the
side.
Installing the HCO-3931 Card
Once a matching rear connector panel is in place, install the HCO-3931 card as follows:
1. Open the front panel of the frame.
2. Slide the HCO-3931card into the slot and push gently on the handle to seat the connectors.
When using a double-slot-width rear panel in a Densité-3+FR1 frame, the card should be inserted into the
lower of the two slots.
When using a double-slot-width rear panel in a Densité-3+FR4 frame, the card should be inserted into the
right-most of the two slots.
Inserting the card into the wrong slot will not damage the card, but the status LED on the card will flash red to
indicate that there is no connection to the rear panel.
3. Close the front panel of the frame.