Teac SX-1:SX-1LE Documentation Sony P2 Protocol - Manual (Page 2)

Additions:
P2 Master reads and uses Rec-arm tally messages. In V1.00 and V1.10, the SX-1 does not
send out requests for EDIT PRESET STATUS, or use the information in the status map
that indicates Rec-arm status. Without this, the SX-1 will ignore audio track arming that
occurs at the remote machine, and the front panel channel REC buttons will not light. Only
actions from the SX-1 itself would work. In V1.50, the SX-1 continually follows the status
of the external machine and updates its internal maps and channel REC button LEDS
accordingly. This allows a higher level of confidence when the controlled device is out of
sight away in a machine closet or room.
REC=4 devices now can choose digital or analog track mapping. In V1.00 and V1.10, remote
devices that had RECS=4 specified would use the ANALOG rec-arm bits in the P2 protocol.
Thus for devices that had 4 digital tracks, it was necessary to choose recs=8 and ignore the
assigned buttons for 5 thru 8. Some devices would map these bits to Timecode tracks and
other functions that the user would prefer not to have affected.
In V1.50 the choices have been expanded:
2A 2 Track using A1 and A2 Analog assignments
2D 2 Track using D1 and D2 digital track assignments
4A 4 Track using A1 A2 A3 A4 analog assignments.
Most 2 Track analog devices map the timecode track to A3 and have nothing in
A4.
4D 4 Track using D1 D2 D3 D4 digital assignments.
8
8 Track using D1 – D8 digital assignments
16 16 Track using D1 – D16 digital assignments.
24
24 Track using D1 – D24 digital assignments.
32 32 Track using D1 – D32 digital assignments.
-- No Rec Arm assignments.
Rec arms now disabled when in Mixdown mode From V1.50, when the SX-1 goes into
Mixdown mode, any tracks Rec-armed over P2 will be turned off until MixDown mode is
exited. This is for safety and to make the behavior similar to the SX-1’s internal recorder. If
the resulting mix is to be recorded to the external P2 device, another pass is required after
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