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GP1F31T Datasheet, PDF (6/8 Pages) Sharp Electrionic Components – Light Transmitting/Receiving Units | |||
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GP1F31T/R, GP1F32T/R, GP1F33TT/RR/RT,GP1C331/331A/335
â13 Output voltage/Pulse response mesuring method
Standard
transmitter
Vin Vcc
GND
5V
Input
6Mbps NRZ, duty 50%
Standard optical fiber cable
GP1F31R/GP1F32R/
GP1F33RR/GP1F33RT
Unit to be measured
Vcc GND Vout
Vcc Rso
CH1
CH2
Rsi
Oscilloscope
Standard
transmitter
Input signal
(CH1)
VOH tr
GP1F31R/GP1F32R
GP1F33RR/GP1F33RT
Output signal
(CH2)
VOL
tPLH
tf
tPHL
50% Notes 1) VCC : 5.0 ± 0.05V (Operating)
2) The probe for the oscilloscope must be more
than 1M⦠and less than 10pF.
3) Rsi , Rso ; Standard load resistrance
90%
( Rsi : 3.3k⦠, R so : 2.2k⦠)
50%
10%
â14 Jitter measuring method
GP1F31T/GP1F32T/
GP1F33TT
Transmitter
Vin Vcc
GND
5V
Input
11 0 0
Input signal 3Mbps
biphase PBRS
Standard optical fiber cable
GP1F31R/GP1F32R/
GP1F33RR/GP1F33RT
Unit to be measured
Vcc GND Vout
Vcc
Rso
Rsi
CH1
CH2
Oscilloscope
Trigger : CH1
Storage mode
Sweep : AUTO/NORM
Input signal
GP1F31R output
GP1F32R output
GP1F33RR output
GP1F33RT output
â tj
â tj
50%
Notes 1) Rsi Rso : Strandard load resistance
( Rsi : 3.3 ⦠Rso : 2.2k⦠)
2 ) VCC = 5.0 ± 0.05V (Operating)
3 ) Set the oscilloscope to be storage mode and
write time to 3 seconds. Do not allow the
waveform to be distorted by icreasing the
50%
brightness too much
4 ) The probe for oscilloscope must be more
than 1M⦠and less than 10pF.
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