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025-000137 REV B

Page 4

C)

Adjust the aural carrier level control to the desired level, typically 15dB below the video carrier.
CAUTION:  Reducing the visual/aural carrier ratio to less than 15dB can result in high out-of-band
spurious signals in adjacent channels.

7)  MISCELLANEOUS

A)

This unit is equipped with video and audio I.F. loops.  Both loops are connected with two type F short
jumpers.  If these become disconnected or misplaced, then the OTM-3000-I will not perform prop-
erly.

B)

If a scrambling unit is utilized with the OTM-3000 I, follow the instructions associated with the scram-
bler. The video I.F. output level is +40dBmV, and the audio carrier level is determined by the aural
carrier level adjustment - typ17dBmV @ 15dB A/V ratio.

C)

This unit is equipped with a 0.25 slo-blo fuse. For continued safety and to maintain proper perfor-
mance of the unit, please replace only with an equivalent fuse.

D)

A -20dB test point (type F connector) is provided on the rear panel.

Содержание OTM-3000-I

Страница 1: ...e Fax OTM 3000 I FREQUENCY AGILE TELEVISION MODULATOR INSTRUCTION MANUAL 025 000137 REV B 8 29 01 209 586 1022 800 545 1022 209 586 1026 E Mail salessupport olsontech com www olsontech com PAL I STAND...

Страница 2: ...LLATION Mount the OTM 3000 I in a standard equipment rack or equivalent as required It is suggested that blank spacesequivalenttoasingleunitheightbeprovidedaboveandbelowthemodulatortoallowadequatecool...

Страница 3: ...turnson Thelightmayblinkwithdifferencesinaveragepicturelevel CAUTION Ifthe modulationissettoohigh compressionorlackofcontrastwilloccurduringhighintensityscenes 5 AUDIO MODULATIONADJUSTMENT A Connectan...

Страница 4: ...umpers If these become disconnected or misplaced then the OTM 3000 I will not perform prop erly B IfascramblingunitisutilizedwiththeOTM 3000I followtheinstructionsassociatedwiththescram bler The video...

Страница 5: ...VERSION WITH LEAST BIT ON LEFT EXAMPLE CALCULATE 437 IN BINARY STEP 1 CONSULT CHART FOR LARGEST NUMBER LESS THAN OR EQUALTO 437 256 STEP 2 CONSULT CHART TO FIND NEXT LARGEST NUMBER WHICHADDED TO 256 I...

Страница 6: ...025 000137REVB Page 6 OTM 3000 PALI Dip Switch Settings Down 0 Up 1 25MHz Steps...

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