PR EVB User’s Manual
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Optilab, LLC
600 E. Camelback Road, Phoenix, AZ 85012
Phone: (602) 343-1496, Fax: (602) 343-1489, Email: [email protected]
2.3 Default Setting
Figure 5 shows an evaluation board in the default setting. Black jumpers
(included in the shipment) can be used to make connections between two pins
adjacent to each other.
The evaluation board has been preset to MGC mode with the highest
bandwidth setting. Photo diode is reversed biased at Vcc. The TIA gain is
maximized (GC = Vcc).
Figure 5. EVB Default Setting and Controls
2.4 Change the Settings
2.4.1 How to use manual gain control (MGC) mode
To use manual gain control mode, leave evaluation board in its default state,
ensure Mode Pin (JP6) is jumped to pin 2 and 3. Adjust the differential gain by
adjusting the potentiometer GC (R1), clockwise to increase gain.
BWH
BWL
OA
RSSI
Mode
GC