AFBR-0544Z Avago Technologies, AFBR-0544Z Datasheet - Page 3

• Manufacturer Part Number: AFBR-0544Z
• Description: Fiber Optic Development Tools 650nm Transceiver Evaluation Kit
• Manufacturer: Avago Technologies

Specifications of AFBR-0544Z

• Product Category: Fiber Optic Development Tools
• Rohs: yes
• Product: Evaluation Kits
• Operating Current: 79 mA
• Operating Supply Voltage: 3.3 V
• For Use With: AFBR-5972Z

3. Electro-Optical Test Confi guration
The two basic test confi gurations for evaluating the AFBR-
5972Z module are shown in Figure 4 (transmitter) and
Figure 5 (receiver). The transceiver module can be char-
acterized for optical/electrical characteristics such as eye
diagram, rise and fall time, jitter, and current consump-
tion. Low loss and matched equal length RF cables should
be used to connect the TD+/- and RD+/- signals to the test
equipment. The current consumption measurement is for
the whole transceiver, transmitter and receiver.
Transmitter Measurement Confi guration
Figure 4 shows the transmitter measurement confi gura-
tion. The transmitter characteristics can be tested for light
optical power (LOP), rise and fall time, and jitter perfor-
mance, including the eye diagram measurement. In this
confi guration, the receiver section is not used; however,
it is recommended that RD+ and RD- be terminated with
50  matched loads. It is also recommended that a low
loss and equal length RF cable can be used to connect
TD+ and TD- to the test equipment.
Figure 4. Transmitter measurement setup confi guration
Figure 5. Receiver measurement setup confi guration
3
Receiver Confi guration
Figure 5 shows the receiver measurement confi guration.
The 1 m POF cable, which is provided with the evalua-
tion kit, is used to obtain a transmission link between
transmitter and receiver. The gray simplex connector
is connected to the transmitter, and the blue simplex
connector is connected to the receiver. The receiver char-
acteristics can be tested for current consumption, rise and
fall time, and jitter performance, including an eye diagram
measurement.
Results
The measurements are carried out using the confi gura-
tion shown in Figure 4 and Figure 5. The pattern generator
is set to a PRBS 2
with LVDS compatible diff erential signals. The transmitter
light optical power (LOP), measured with an optical power
meter (OPM) at 650 nm, was -5.57 dBm with a current con-
sumption of 78 mA @ 3.3 V supply voltage.
Figure 6 shows the transmitter eye diagram after the
optical-to-electrical converter block.
Figure 7 shows the receiver eye diagram measured with
the diff erential probe at DP, as shown in Figure 3(a). The
current consumption is 79 mA. The SD voltage is 1.63 V
with no optical input and 2.33 V with an optical signal.
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-1 pattern and data rate of 125 Mbit/s