USL JSD-60 Manual - Manual (Page 26)

Page 26
Headroom
The headroom setting adjusts the system gain so the nominal level is a specified number of dB below the digital
clipping level (0 dBFS). Generally, headroom is set at 26dB. If several bands of equalization are set to high levels of
boost, you may wish to increase the headroom to avoid clipping.
FLASH Save Settings
Pressing this button saves the current configuration to flash memory inside the JSD-60. The JSD-60 will load this
configuration the next time it is powered up. Because of the importance of saving the configuration, you are also
given another opportunity to save the settings when disconnecting from the JSD-60.
SD Card Backup
Pressing this button writes the current configuration to the SD or MMC card plugged in behind the removable
panel on the rear of the JSD-60. If the cover is removed, you will see a red LED to the left of the card light as the
card is written. A backup to the SD card can fail if no card is present, if the card is write protected, or if the card is
not formatted correctly (FAT16 or FAT32). The data written on the card is a series of commands in a text file
(JSD60.CFG). If a JSD-60 needs to be swapped out, the SD/MMC card can be moved from the old unit to the new
unit to copy all the old settings to the new unit. To load data from the SD/MMC card, hold down buttons 6 and 7
(Non/Sync and MIC) when turning the JSD-60 main power switch on. Continue to hold the buttons down until the
bypass LED stops flashing.
8.8
Main Fader
The current main fader level can be viewed and changed using the slider. These are equivalent to the front panel
main fader knob and display. The fader level display also shows a small bar graph that displays the output level on
each channel. In most channel configurations, the main fader adjusts all outputs except HI and VI-N. However, in
the Drive In configuration the main fader does not adjust the outputs driving the transmitter, field speakers, or
monitor. See channel configuration for details about fader bypass channels.
8.9
Front Panel View
Below the controls described above is a view of the JSD-60 front panel. When connected to the JSD-60, this view
duplicates the look of the front panel. In addition, the buttons can be pressed to change format or mute the
system, just as on the front panel. The LED above the format button lights when that format is selected. It flashes
if the format is a digital format and no digital signal is present on the selected input.
8.10
Tabs
The remainder of the GUI window contains tabs that divide the remaining configuration data into logical groups.
Each tab will be discussed in the following sections.