Fiber Optic Receiver
MOF-R3C2
Fig. 2 Measuring Method of Output Voltage and Pulse Response
Fiber optic cable
Standard transmitter
MOF-T3C2
MOF-R3C2
VCC
VOUT
GND
VCC
Vin
GND
5V
VCC
Input
Oscilloscope
CH1
CH2
13.2 Mbps NRZ, Duty 50%
Test item
Test item
Low →High pulse delay time
High → Low pulse delay time
Rise time
Symbol
t PLH
t PHL
tr
50%
Standard transmitter
Input signal
(CH1)
tf
tr
Fall time
tf
VOH
Pulse width distortion
Δtw = t PHL - t PLH
Δtw
VOH
VOL
90%
50%
10%
High level output voltage
Low level output voltage
Output signal
(CH2)
VOL
tPHL
tPLH
REV: A3
Unity Opto Technology Co., Ltd.
04/01/2002
4/4
UOT [ UNITY OPTO TECHNOLOGY ]
