Velodyne Acoustics SMS -1

.www.velodyne.com Digital Drive User’s Manual

Choose one SMS-1for all the connections described below (we’ll call this the “master”), and

then connect an RCA jack from the THRU RCA jacks of the “primary” to the Input jacks of the

“slave.” You will also need to obtain a “Mouse Extension” serial cable (available at any computer

store, from your Authorized Velodyne dealer, or from Velodyne directly) and connect the RS232

OUT port of the primary SMS-1to the RS-232 IN port of the secondary SMS-1. Then, all

runtime commands directed at the primary SMS-1(such as select preset, volume, etc.) will be

communicated to the secondary SMS-1automatically through the serial cable. If you have more

than two SMS-1s in your setup, simply continue the daisy chain from the secondary SMS-1to

the next SMS-1in the line (using both RCA and serial connections) and so on.

NOTE: When an SMS-1detects an incoming RS-232 command, it reverts to “Slave Mode.”

This means that the SMS-1will no longer accept IR commands. To reestablish normal

operations, disconnect the RS-232 cable and power cycle the unit.

Note that the daisy chain connection ONLY allows the woofers to communicate basic “run-time”

commands such as volume and preset. We recommend the following sequence when setting

up daisy-chained SMS-1s.

1. First, connect only the master SMS-1/subwoofer(s) to the system. Do not connect the thru

or serial cables at this time.

2. Establish the crossover, phase, and other settings EXCEPT the EQ on the master SMS-

1/subwoofer(s) (see setup steps 1 –17 below). Note the low pass crossover,phase and

polarity settings, then save.

3. Connect the video out of the slave SMS-1/subwoofer(s), go to the settings screen, establish

the low pass crossover, slope, phase, polarity, and night mode settings from the master

SMS-1, then save settings.

4. Connect the microphone to the slave SMS-1/subwoofer(s) and use the “self-EQ” feature

(described below) to establish room EQ for that SMS-1.

5. Repeat steps 3 and 4 for each slave SMS-1/subwoofer(s) in your system.

6. Reconnect the video out to the master SMS-1/subwoofer(s), and reconnect the thru and

serial cables so that the master and slave SMS-1(s) are daisy chained.

7. EQ the primary SMS-1/subwoofer(s) (see steps 8-25). Self-EQ is NOT recommended for the

primarySMS-1/subwoofer(s).

8. Setup is complete!