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DS3154 Demo Kit
TCLK JUMPERS
Jumpers JMP7, JMP8, JMP9, and JMP10 (just below the system connector) select the clock source for the
DS3154 transmitters. The center pin on each of these jumpers is connected directly to the associated TCLK pin on
the DS3154. To drive a DS3154 TCLK pin from the system connector, connect the center pin and the EXT
(external) pin of the associated jumper. To drive a DS3154 TCLK pin from one of the on-board oscillators, connect
the center pin and the INT (internal) pin of the associated jumper. Jumpers JMP2, JMP3, JMP4, and JMP5 select
between the DS3 oscillator and the E3 oscillator ( Figure 2 ).
Figure 2. TCLK Jumpers
SYSTEM
TCLK1
TCLK2
TCLK3
TCLK4
CONNECTOR
EXT
JMP7
EXT
JMP8
EXT
JMP9
EXT
JMP10
DS3154
DS3154
DS3154
DS3154
DS3
INT
TCLK1
E3
DS3
INT
TCLK2
E3
DS3
INT
TCLK3
E3
DS3
INT
TCLK4
E3
OSC
JMP2
OSC
OSC
JMP3
OSC
OSC
JMP4
OSC
OSC
JMP5
OSC
LINE-SIDE CONNECTIONS
The DS3154DK implements the transmit (Tx) and receive (Rx) line interface networks recommended in the
DS3154 data sheet and shown in Figure 3 . The BNC connectors for LIU1 are labeled TX1 and RX1. The BNC
connectors for LIU2 are labeled TX2 and RX2. The BNC connectors for LIU3 are labeled TX3 and RX3. The BNC
connectors for LIU4 are labeled TX4 and RX4.
Figure 3. Line-Side Circuitry
TRANSMIT
0.05 m F
330 W
(1%)
EACH LIU
TXP
TXN
1:2ct
RECEIVE
0.05 m F
330 W
(1%)
DS315x
RXP
RXN
1:2ct
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