VISTEK V6301 audio
wordclock distribution amplifier
HU-V6301
5
Table 2.1.1
Description of V6301 rear panel connections for standard rear panels
SIGNAL
SOURCE
COMMENTS
POWER
Rack PWR Header
+15V at 100mA (1.5W max)
DART bus
Rack DART header
Vistek DART Rack controller
W/CLK A(IN)
W/CLK ext. source
Ch. A TTL wordclock input:
75
Ω
/Hi-Z single ended on BNC rear panel
75
Ω
/Hi-Z single ended on screw terminal rear panel
W/CLK A1 (OUT)
V6301 DA
Ch. A TTL wordclock outputs (all modes)
W/CLK A2 (OUT)
75
Ω
/Hi-Z single ended on BNC rear panel
W/CLK A3 (OUT)
75
Ω
/Hi-Z single ended on screw terminal rear panel
W/CLK A4 (OUT)
W/CLK B(IN)
W/CLK ext. source
Ch. TTL wordclock input sourcing cable length up to 50m
75
Ω
single ended on BNC rear panel
75
Ω
/Hi-Z single ended on BNC rear panel
75
Ω
/Hi-Z single ended on screw terminal rear panel
W/CLK B1/A5 (OUT)
V6301
1:8 mode: Ch A wordclock o/p.
W/CLK B2/A6 (OUT)
2:4 mode: Ch B wordclock o/p
W/CLK B3/A7 (OUT)
75
Ω
/Hi-Z single ended on BNC rear panel
W/CLK B4/A8 (OUT)
75
Ω
/Hi-Z single ended on screw terminal rear panel
2.2
Input Impedance Selection
The input impedance of the A Channel and B Channel wordclock receivers may be set to either 75 ohms or
high impedance (
≥
10k
Ω
) by means of jumpers LK3 and LK5. The high impedance function may be used
when it desired to daisy-chain the inputs of a number of V6301 DA’s in a rack, without cascading them. In
this case one of the V6301s is set for 75 ohms and the others are set to high input impedance. Two
cautions are advised:
•
The V6301 with 75 impedance should be the V6301 physically farthest from the feeding source.
•
The daisy chaining is intended to be used within a rack or cabinet. Long cable runs into high impedance
are NOT recommended. When daisy chaining V6301s with Hi-Z inputs, source cable length should not be
more than a couple of meters.
Impedance option
Jumpers
Channel A 75
Ω
LK3 CLOSED
Channel A Hi-Z (>10k
Ω
)
LK3 OPEN
Channel B 75
Ω
LK5 CLOSED
Channel B Hi-Z (>10k
Ω
)
LK5 OPEN
