NBSG86ABAEVB

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9

2:1 MUX Function Setup (continued)

Connect the Inputs

Step 2:

For Differential Mode (3.3 V and 2.5 V operation)

2a: Connect the differential outputs of the generator to the differential inputs of the device

(D1/D1).

2d: Connect the generator trigger to the oscilloscope trigger.

For Single-Ended Mode (3.3 V operation only)

2a: Connect an AC-coupled output of the generator to the desired differential input of the

device.

W

resistor.

2e: Connect the generator trigger to the oscilloscope trigger.

All Function Setups

Connect OLS (Output Level Select) to the required voltage to obtain desired output

amplitude. Refer to the NBSG86A device data sheet page 2 OLS voltage table.

Setup Input Signal

Step 3:

3a: Set the signal generator amplitude to 400 mV. Note that the signal generator amplitude

can vary from 75 mV to 900 mV to produce a 400 mV DUT output.

3b: Set the signal generator offset to 660 mV (the center of a nominal RSECL output). Note

further information.

3c: Set the generator output for a square wave clock signal with a 50% duty cycle, or for a

PRBS data signal.

Connect Output Signals

Step 4:

4a: Connect the outputs of the evaluation board (Q, Q) to the oscilloscope. The oscilloscope

sampling head must have internal 50

W termination to ground.

NOTE:

Where a single output is being used, the unconnected output for the pair

must be terminated to