Olson Technology 7-OR - Manual (Page 7)

025-371546 Rev X1 Page 7
CHECKING THE LASER RF DRIVE LEVEL
For best performance, you will check and adjust the Laser RF drive level into the return transmitter You can measure
this level using the Laser RF Drive test point and the procedure below.
1. Attach 7-OR-RT TP Tool RF test point adapter to the return transmitters Laser RF Drive test point, shown in
Figure 3. Connect the other end of the adapter to a spectrum analyzer.
2. Next, you will use the RF test point to check that the return transmitter’s RF drive level matches a desired level,
which depends upon the channel loading of the return signal. Each 7-OR-RT comes with a checklist with the drive
level noted for 35MHz loading. This indicates the level of the video pilot at the RF test point, in dBmV, for a return
signal with one video channel. Refer to the tables below for information about other channel loadings.
3. Rotate the RF Drive Adjustment control, shown in Figure 3, until you obtain the desired level.
Table 1 - Fabry-Perot Transmitter Setup
Table 2 - DFB Transmitter Setup