VISTEKV6301audio
wordclockdistributionamplifier
HU-V6301 5
Table 2.1.1
Description ofV6301 rear panelconnections for standard rear panels
SIGNALSOURCE COMMENTS
POWER Rack PWR Header +15V at 100mA (1.5Wmax)
DARTbusRack DARTheader VistekDARTRackcontroller
W/CLK A(IN)W/CLK ext. source Ch. A TTL wordclock input:
75 /Hi-Z single ended on BNC rear panel
75 /Hi-Z single ended on screw terminal rear panel
W/CLK A1 (OUT)V6301 DA Ch. A TTL wordclockoutputs(all modes)
W/CLK A2 (OUT)75 /Hi-Z single ended on BNC rear panel
W/CLK A3 (OUT)75 /Hi-Z single ended on screw terminal rear panel
W/CLK A4 (OUT)
W/CLK B(IN)W/CLK ext. source Ch. TTL wordclockinput sourcing cable length up to 50m
single ended on BNC rear panel
75 /Hi-Z single ended on BNC rear panel
75 /Hi-Z single ended on screw terminal rear panel
W/CLK B1/A5 (OUT)V6301 1:8 mode: Ch A wordclocko/p.
W/CLK B2/A6 (OUT)2:4 mode: Ch B wordclocko/p
W/CLK B3/A7 (OUT)75 /Hi-Z single ended on BNC rear panel
W/CLK B4/A8 (OUT)75 /Hi-Z single ended on screw terminal rear panel
2.2 Input Impedance Selection
The input impedance ofthe A Channel and B Channel wordclock receivers maybe set to either75 ohmsor
high impedance (≥10k ) bymeansof jumpers LK3 and LK5. The high impedance function maybe used
when it desired to daisy-chain the inputs ofa number ofV6301 DA’sin a rack, without cascading them. In
thiscase one ofthe 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 physicallyfarthest fromthe feeding source.
• The daisychaining is intended to be used within a rack orcabinet. Long cable runs into high impedance
are NOT recommended. When daisychaining V6301swith Hi-Z inputs, source cable length should not be
more than a couple of meters.
Impedance option Jumpers
Channel A 75 LK3 CLOSED
Channel A Hi-Z (>10k )LK3 OPEN
Channel B 75 LK5 CLOSED
Channel B Hi-Z (>10k )LK5 OPEN
