Datasheet

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SNLU071 DRIVECABLE04EVK 3
S3, S4 OUT+, OUT- are the 50 SMA output connectors for the DS30EA101 data outputs. These outputs
have onboard 4.7 F AC-coupling capacitors (C13 and C14). The DS30EA101 has a differential output
driver, and when using only one output (one half of the differential pair), the unused output should be
terminated with a 50 SMA termination.
J3 LOS, EN
¯¯¯
is the jumper for monitoring LOS and controlling EN
¯¯¯
. LOS is asserted high when no signal
is present at the DS30EA101 input. EN
¯¯¯
may be used to force the DS30EA101 outputs on or off, or tied to
LOS to allow automatic output enable operation. To force the outputs off, set the jumper to tie EN
¯¯¯
to VCC.
To force the outputs to be always on, set the jumper to tie EN
¯¯¯
to GND. For normal operation, set the jumper
to tie LOS to EN
¯¯¯
for automatic output enable control.
LED1 LOS is the LED for the LOS status. This LED is GREEN when an input signal has been detected at
the DS30EA101 input, and OFF when no input signal is detected.
2.3. Operation
DRIVECABLE04-TX is the transmitter board and DRIVECABLE04-RX is the receiver board. To test these
boards, begin by applying the appropriate DC power to each board (3.3V for DRIVECABLE-TX and 2.5V for
DRIVECABLE-RX).
Apply a test signal within the DS30BA101 input specifications to the S1 and S2 50 SMA input connectors
on the DRIVECABLE04-TX board via a matched pair of 50 SMA cables.
The DS30BA101 on the DRIVECABLE04-TX board is configured to drive 75 coaxial cable. Connect this
cable to either the B1 or B2 75 BNC output connector. The other output may be sent to an oscilloscope or
other test equipment for monitoring, but if it is not used, it should be terminated with a 75 BNC termination.
Connect the other end of the 75 coaxial cable to the B3 75 BNC input connector on the DRIVECABLE04-
RX board. The equalized output may be observed via the S3 or S4 50 SMA output connector. Connect a
matched pair of 50 SMA cables to S3 and S4 to observe the differential output, or connect the cable to
either S3 or S4 to view the single-ended output. If only one output is used, the other output should be
terminated with a 50 SMA termination.