Olson Technology S450P Series - Manual (Page 16)

025-000485 REV x1 Page 16
3.5.2 Offset Mode
(continued)
B: Adjust the Offset Control to obtain the desired carrier frequency, as indicated on the
counter. The picture carrier frequencies of the output channels, including offsets, are shown
in Table 3-3.
NOTE: Because the S450P is a frequency conversion device, the output frequency
will change in direct relation with the input frequency. Therefore, any change in the
input frequency may cause the output frequency to change in excess of the FCC
tolerance of +/- 5KHz on off set channels.
3.6 Output Carrier Level
The RF output carrier level is adjusted with the front panel (output level) control. To make this adjustment,
connect a signal level meter, tuned to the appropriate RF picture carrier, to the -20dB test point on the front
panel. Adjust the output level control for the desired level; the level can be adjusted over a 10dB range to
suit your system requirements. Maximum recommended output level is +60 dBmV, 50-450 MHz.
+57 dBmV for 450-550 MHz.
3.7 Picture/Sound Ratio
The aural/visual carrier ratio can be adjusted using the front-panel A/V control. To make this adjustment
proceed as follows:
1: Connect a signal level meter to the -20dB test point.
2: Tune the meter to the appropriate picture carrier and note the measured level.
3: Tune the meter to the aural carrier of the same channel. Compare the aural carrier level to the
picture carrier level measured in step 2. This will give the aural/visual carrier ratio.
4: Adjust the A/V control to increase or decrease the ratio as required by the system needs. The
picture carrier will not be affected by this adjustment.