USL JSD-100 Manual - Manual (Page 30)

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PIC Firmware RestoreIf a download of the PIC firmware to the JSD‐100 is interrupted, the JSD‐100 may be left
inoperable. To restore the original firmware, turn off the JSD‐100, press buttons 4 and 6 on the front panel (Digital
16 Channel and User 2), then turn the power on while continuing to hold the buttons down until the front panel
LEDs start flashing. When they stop flashing, the factory installed firmware has been restored, and the JSD‐100 will
restart.
Diagnostics Tab
This tab provides diagnostics that help USL
personnel in debugging the system. You may
be instructed by USL to perform various
functions on this tab to debug problems in
the installation. The terminal section of this
screen can be used to test JSD‐100
commands, such as those an automation
could send. The image to the right shows a
couple automation commands being sent to
the JSD‐100. Click the mouse cursor in the
terminal area, and then type commands (tab
delimited and terminated with a carriage return). See Appendix B for more information on automation
commands.
Disconnect And Save
All the settings that have been made up to this point are
currently determining how the JSD‐100 operates.
However, these settings will not be restored on a power
cycle unless the disconnect button is pressed and a save is
requested. It is VERY IMPORTANT that the changes you’ve
just made are saved in the JSD‐100. In the dialog box that
appears after pressing Disconnect, press Save Changes to
save these changes to non‐volatile memory in the JSD‐
100. If you do not save the changes, they will remain in
the JSD‐100 until the power is turned off. The previously
saved settings will then be restored. At this point (prior to
disconnecting), you may also want to back the settings up
to the SD card by pressing Backup, as described
previously.
Channel Crossover and Equalization Procedure
Audio channel equalization consists of two steps:
1. Crossover adjustment (if crossovers used).
2. Channel Equalization.
7.5
Crossover Adjustment
A suggested crossover adjustment procedure is listed below. It should be skipped if the JSD‐100 internal
crossovers are not being used.
1. Insure that the proper speaker configuration (biamp or triamp) is selected by the Channel Config button.
2. Position the RTA microphone in the auditorium as specified by SMPTE ST 202:2010 (about 2/3 of the way back
from the screen and 2/3 of the way from a side wall of the auditorium). The microphone is normally 1.0 to 1.2
meters (3.3 to 4.0 feet) from the floor, or “ear level” for a typical audience member.
3. Plug the microphone in to the PA or CAL microphone input of the JSD‐100. Set the RTA input to the
appropriate microphone input.