Olson Technology LP-CAN - Manual (Page 5)

025-000580 Rev. X1 www.olsontech.com 5
TRANSMITTER DESCRIPTION
The LP-OLAT Transmitter carries 10MHz to 4,000MHz RF signals over single-mode optical
fiber. Model LP-OLAT includes an adjustable 25dB digital gain control. Laser power options
include +4dBm/2.5mW (DFB, CWDM), +5dBm/3mW (DFB) or +10dBm/10mW (DFB, DWDM).
Built-in test points, LED indicators and alarms allow the transmitter to be easily set up and
maintained.
Figure 1 - Annotated Front & Rear View of Transmitter
TRANSMITTER CONTROLS OVERVIEW
On the front of the transmitter, the user can change the gain of the transmitter over a 25dB
range using S1 & S2. Higher gain allows the transmitter to be used with lower level RF sig-
nals and vice versa. S1 is a 16-position, hexadecimal, rotary switch. The “0” setting is mini-
mum gain and the “F” setting is the maximum gain. Each position is equal to a 1dB gain
change. So the gain of the “F” setting compared to the gain of the “0” setting will be 15dB
higher. The bottom switch of S2 is a high/low gain setting. When it is in the “Lo” position, the
incremental gain is 0dB. When it is “Hi” position, the gain increases by 10dB. To set the
transmitter for minimum gain, set S1 to “0” and the bottom switch of S2 to the left. To set the
transmitter for maximum gain, set S1 to “F” and the bottom switch of S2 to the right.