Velodyne SMS-1 - Manual (Page 17)

www.velodyne.com Digital Drive SMS-1 User’s Manual - 11
choose one SmS-1 for 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-1 to 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-1 automatically through the serial cable. If you have more
than two SmS-1s in your setup, simply continue the daisy chain from the secondary SmS-1 to the next SmS-1
in the line (using both RcA and serial connections) and so on.
NOTE: when an SmS-1 detects an incoming RS-232 command, it reverts to “Slave mode.” This means that
the SmS-1 will 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 primary
SmS-1/subwoofer(s).
8. Setup is complete!