Olson Technology LCM-300-S - Manual (Page 6)

025-370308 REV B Page 6
8.) RF OUTPUT AND AURAL CARRIER LEVEL ADJUSTMENT (Each modulator)
A) Using a field strength meter or spectrum analyzer, set the video carrier to the desired level with the
output level (RF) control (typically +40 to +45dBmV).
B) Tune the field strength meter to the aural carrier, which is located 4.5MHz above the video carrier.
C) Adjust the aural carrier level control (A\V) to the desired level, typically 15dB below the video
carrier. CAUTION: Reducing the aural \ visual carrier ratio to less than 15dB can result in high out-
of-band spurious signals on adjacent channels.
9.) MISCELLANEOUS
A) The front panel adjustments (RF, OFFSET, etc.) are small, and somewhat delicate. Use CAUTION
and an adjustment tool that is a proper fit when adjusting these controls.
B) The LCM-300-S is BTSC stereo compatible. Each modulator is shipped in the “mono” mode.
To defeat the pre-emphasis in order to use a composite baseband BTSC input signal, see section 7
of this manual.