Olson Technology LP-CAN - Manual (Page 6)

025-000580 Rev. X1 www.olsontech.com 6
J1 & J3 allow easy measurement of the transmitter optical output power using a Digital Volt
Meter (DVM). J1 is a ground. J3 gives an indication of the laser power. The scale factor is 0.1
V/mW. J2 is the optical output.
D1 indicates that the Laser Power is OK. It will be green if the laser control circuitry is be-
having normally. If the laser or control circuitry fails, then D1 will turn red.
D2 indicates the input RF Level. Figure 2 indicates the thresholds at which D2 will switch. D2
will be yellow if the RF level is below the low threshold, red if the RF level is above the high
threshold and green if the RF level is between the low and high thresholds. For most applica-
tions, if D2 is green, then the RF level is in the optimum range. J4 is the RF Input. It is a
high-frequency F-Type Female (75Ω) Connector. Alternately a 50Ω SMA connector can be
provided.
Figure 2 - RF Level (D2) Behavior