Service manual

TranSync PLUS (SUN820B157)
CARD DESCRIPTION
TranSync Plus is a transputer-based master timing controller card which generates
sampling clocks and timing signals for controlling a 128-slot time-division multiplexed
(TDM) 32-bit Audio Bus. Complex PLL hardware allows the card to lock the system to a wide
range of audio and video reference signals. In addition, TranSync Plus can control any
co-resident audio interface cards and, via its transputer links, any other transputer-based
processing cards.
LED INTERPRETATION
D2 (red) ON indicates Transputer error.
D3 (green) ON indicates Transputer Link 0 activity.
D4 (green) ON indicates Transputer Link 1 activity.
D5 (green) ON indicates Transputer Link 2 activity.
D6 (green) ON indicates Transputer Link 3 activity.
D7 (red) ON indicates Transputer reset.
D8 (yellow) ON indicates AES/EBU reference input
clock.
D9 (green) ON indicates Rough lock acquired.
D11 (green) ON indicates Fine lock acquired.
D12 (yellow) ON indicates Video Lock (with D14 or
D15) or Varispeed Mode.
D13 (yellow) ON indicates Word Lock.
D14 (yellow) ON indicates Wide (+/-12.5%) PLL
selected.
D15 (yellow) ON indicates VCXO (narrow) PLL
selected.
Digital Service Manual
Issue 3 Page 29
D2
D3
D4
D5
D6
D8
D13
D9
D14
D7
D12
D11
D15
SUN820-157