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crystal User Manual
Version: 6.6.0/2
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5. Installation
7
GPIO (37-pin D-Sub)
The GPIO connector provides 8 x GPI (optocouplers) and 8 x GPO (silent relays) for local signaling and
switched functions:
·
GPI = 8 x optocouplers (3-36V DC / 8mA @ 36V)
·
GPO = 8 x Opto-MOS relays (60V AC / 0.5A @ 60V)
The connector is a 37-pin D-type.
8
WCLK IN & OUT (BNC)
The system can sync to external wordclock by connecting the clock signal to
WCLK IN
.
The
WCLK OUT
provides an output of the current system reference: WCLK IN, AES or internal clock.
In both cases, connections are made using standard 75 ohm BNC connectors. The maximum cable length
depends on the equipment you are connecting to.
See Synchronization for more details.
9
Grounding & Power
See