Appendix A | Sync Input Info | 386 | |
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Sync Input Info
The dbx 386 comes with the word input 75Ω terminated. For certain configurations, you may wish to have the sync input be unterminated. Certain "house sync" configurations will require you to change the default position of the termination jumper on the main circuit board. For example, if you run your sync to several pieces of equipment using a tapped configuration (using BNC T’s) as shown below, only the last box, box C, would be terminated (marked "75 ohm terminated" on the circuit board). Unfortunately, some equipment does not allow the user to change the termination setting. These pieces of equipment are usually provided with a per- manent termination. If you use the 386 with another piece of terminated equipment in tapped configuration, you should unterminate (marked "unterminated" on the circuit board) the 386’s sync input. The same is true if you wish to use several 386’s in a tapped configuration. See Fig. A.1 for the location of termination jumper.
Tapped Configuration
Sync Source
A
386
C
Fig. A.1
Location of sync input termina- tion jumper. “Terminated” selection is shown.
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18 | 386 User Manual |
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