Tally Out (6-way HiROSE): Tally & Call relay (volt-free contacts, 1A) +5V rail - 100mA poly fused, or +12V
Switch-selectable audible Call sounder
Audio Prog In 1&2: (3-pole female XLR) 10k ohm bal, gain 0, 40, 60dB Switch-selectable 48V phantom power
Talkback (5-pole female XLR): 10k ohm switched gain (mic/line) in with selectable 200 ohm term, phantom power 30V switch selectable with call detection earphone circuit Mix control for Eng T/B or Production T/B with Camera Return Audio Out and Volume control for final mix.
Base Unit
(Video I/O via 75 ohm BNC) SDI Out: 2 x SMPTE 259M PAL/NTSC Out: (1Vpk-pk) -ve sync
Return Video In (1&2): 1Vpk-pk Ref In: Black & Burst (loop through)
Serial comms 1&2: 9-way D-type, Switch-selectable RS232/422
Return Audio In: (3-pole female XLR) 10k ohm bal, switched gain (mic/line) Switch-selectable 48V phantom power
Camera Audio In: (3-pole female XLR) 10k ohm bal, switched gain (mic/line) Switch-selectable 48V phantom power
Prog Audio Out 1&2: balanced (3-pole female XLR)
Production T/B and Eng T/B: Each have 5-pole female XLR, 10k ohm, switched gain (mic/line) input with switch selectable 200 ohm termination, phantom power switch selectable 30V with call detection earphone circuit
