DS3150DK
4 of 12
LINE-SIDE CONNECTIONS
The DS3150DK implements the Tx and Rx line-interface networks recommended in the DS3150 data
sheet and shown in Figure 3. To connect the DS3150 to DS3, E3, or STS-1 test equipment, connect the
equipment to BNC connectors J1 and J2 using coaxial cables. To externally loopback the DS3150 from
transmitter to receiver, connect J1 and J2 together through a length of cable or a cable simulator.
Figure 3. DS3150DK LINE SIDE CIRCUITRY
SYSTEM CONNECTOR
The 16-pin System Connector at the top of the board gives access to the following DS3150 signals:
RPOS, TPOS, RNEG, TNEG, RCLK, TCLK, MCLK, and PRBS. Use the System Connector to connect
the DS3150 to an external framer or other data source/sink. To configure the DS3150DK board for an
external remote loopback, place TCLK-RCLK, TPOS-RPOS, and TNEG-RNEG jumpers (Figure 4).
Figure 4. SYSTEM CONNECTOR
POWER SUPPLY CONNECTORS
Connect a 3.3V power supply across the red (V
CC
) and black (GND) banana jacks. When a power supply
is present, the green PWR LED is lit.
GNDRPOS
GNDTPOS
GND RNEG
GNDTNEG
GNDRCLK
GNDTCLK
GND MCLK
GND PRBS
DS3150
Tx+
Tx-
Rx+
Rx-
RECEIVE
1
2
1
2
R1
330Ω
(1%)
R2
330Ω
(1%)
TRANSMIT
0.1µF
0.1µF
