Fiber Optic Receiver
MOF-R3C4
Fig. 2 Measuring Method of Output Voltage and Pulse Response
Fiber optic cable
Standard transmitter
MOF-T3C4
Vin
VCC GND
VCC
Input
5V
13.2 Mbps NRZ, Duty 50%
Oscilloscope
CH1
CH2
MOF-R3C4
GND
VOUT
VCC
Test item
Test item
Low →High pulse delay time
High → Low pulse delay time
Rise time
Fall time
Pulse width distortion
Δtw = t PHL - t PLH
High level output voltage
Low level output voltage
Symbol
t PLH
t PHL
tr
tf
Δtw
VOH
VOL
Standard transmitter
Input signal
(CH1)
tr
VOH
Output signal
(CH2)
VOL
tPLH
50%
tf
90%
50%
10%
tPHL
Unity Opto Technology Co., Ltd.
4/4
REV: A3
04/01/2002