Cobalt Digital COMPASS 9121 3G_HD_SD-SDI_ASI Redundancy Switch - Manual (Page 23)

9121-OM (V1.2) 9121 PRODUCT MANUAL 3-3
Operating Instructions
9121 Function Submenu List and Descriptions
Provides input status and routing controls for manual or
failover routing to the relay output and non-relay
reclockable outputs.
• Input Status Shows input status of SDI Input A and Input B as follows:
• SDI format (for example, “720p/5994” as shown to the left) indicates
input recognizes a valid SDI format supported by the card.
• Unlocked indicates input does not recognizes a valid SDI format
supported by the card. This can be from loss of signal presence or a
signal format that is not supported SMPTE 425M, SMPTE 292M, or
SMPTE 259M signals recognized by the card (such as ASI or AES
audio).
Note: Card relay output RLY A/B OUT must be terminated into 75 Ω
impedance via connection to downstream equipment or termination
for card to properly display input status.
• Output Select and Status Selects (either manually or via failover rules) input-to-output routing of the
two inputs to the card RLY A/B OUT port and the four OUT non-relay ports
as follows:
• Input A or Input B selection provides corresponding manual selection
of input. In this mode, GPI can select the alternate input when applied.
• Fail Over selection provides main path preference of Input A.
- If Input A goes invalid, then Input B is selected.
- If Input A goes valid again, failover automatically reverts to Input A.
Note: If an input is being sourced from a digital signal other than a
supported SMPTE 425M, SMPTE 292M, OR SMPTE 259M signal
(such as ASI or AES audio), unlocked will be displayed. Failover
cannot reliably be used when passing these signals. Input select
should only use manual selection. Failover usage when carrying
signals other than SDI should utilize the GPI inputs controlled by
suitable external monitoring devices.
• Output Status shows input routing currently invoked (either by manual/
GPI selection or by failover), as well as signal status.
Example here shows manual (forced) selection with Input A not present
(or not recognized as valid).
Example here shows failover from Input A to Input B upon unlock of
Input A.
Table 3-1 9121 Function Submenu List — continued