CDK-111A-Lite Owner's Guide - Ross Video

Key Modifier (0x0A, KEY_MOD)This command selects the characteristics for the requested key. The squeeze backfield has no effect. The “Keyer Select” parameter selects keyer 1 only formodification.FunctionKey Modifier (0x0A, KEY_MOD)Keyer SelectCommand Data FieldsKeyModifierSqueezeBackCOMMAND 1 byte 1 byte 1 byteQUERY1 byteREPLY 1 byte 1 byte 1 byteKeyer Select byte value 101 Keyer 1 selectKey Modifier bit settingsBit 0 0 = Self1 = ExternalBit 1 0 = Matte1 = VideoBit 2-4 IgnoredBit 5-7 ReservedSqueezeBack Position byte values 200 No change1. One keyer must be selected for the command format of this field. One keyer may be selected for thequery format of this field. No keyers selected is an invalid condition.2. Not yet implemented.Key Enable (0x0B, KEY_ENABLE)This command selects Keyer 1 to be on or off air after the next transition.• Selecting a Keyer (bit=1) at the next transition will take an off-air key onair,or leave an on-air key on-air. Setting (bit=0) has a similar, butcomplimentary effect.• Selecting a Keyer (bit=1) for a currently off-air Keyer will cause that Key tobe seen on the PST bus.See comments in the TX_NEXT command notes concerning interaction with theKEY_ENABLE command.4-32 • Appendix A. Serial Protocols CDK-111A-Lite • Owner’s Guide v4B