Starter Kit Instruction Manual Appendix 56
10.1.3 Specifications
Bias frequency . . . . . . . . . . . . . . . . Up to 100 Hz
Achievable shift . . . . . . .. . . . . . . . . . . . . . . . . 0.1%
Input voltage Uin. . . . . . . . . . . . . . . . . . .0 to 3 V
Input voltage threshold . . . . . . . . . . . . . . . . 0.6 V
Input frequency Fin .. . . . . . . . . . . . . 0 to 1 kHz
Input impedance Zin .. . . . . . . . . . . . . . . . . 100Ω
Output Umon max. . . . . . . . . . . . . . . . . . . . . 2.5 V
Output impedance Zmon .. . . . . . . . . . . . . . 10 Ω
Ratio Umon/Ib. .. . . . . . . . . . . . . . . . . 10mV/mA
10.1.4 Utilisation
The current into the sink must not exceed too much
a value given by the laser specifications as follows:
•The largest allowed peak current of the laser
from the LI-curves, multiplied by the respec-
tive duty cycle gives the upper limit of the
mean laser current.
Imax =Ipmax∗d
•The sum of the Bias current (Ib) and the actu-
ally applied mean laser current (Ip∗d) should
be limited by the upper limit of the mean laser
current.
Ib+Ip∗d≤Ipmax∗d
•The Bias-T itself has a limit at:
Umon = 2.5V or
Uin = 3V
Note: If higher voltages are applied, excessive
heating of the Bias-T may occur and destroy the
laser.