JBL HLA 4895 Owner's Manual page 14

PCMCIA cards
There is a PCMCIA card slot underneath the top cover in the front, left corner of the DSC280 unit. HLA
files stored to a PCMCIA card can be loaded into the unit. This makes an excellent field method for confidently
and accurately updating system characteristics for the DSC280 that have been carefully worked out in a
controlled environment such as a test bench or system warehouse. After the cover has been removed and a card
has been inserted, press "RECALL" while in the default screen. Press the middle soft key on the left of the display.
Use the up or down cursor key to make the middle soft key show "Cprg" ( Card program). Press the top soft key
("PICK") and press the up or down cursor key to select the program from the card. A second press of Recall will
load the program. The preset should now be stored in the DSC280's internal memory for future use.
MIDI command information bulk dump
The controls for performing a MIDI bulk dump are located on the Utility menu of the default screen.
This operation copies all data from one DSC280 into another via a MIDI cable connecting the two units.
Instructions are found on page 19 of the DSC280 manual.
For more detailed information on using the DSC280, refer to the User Manual.
Using the Model DSC260 Digital System Controller
A cost-effective alternative to the DSC280 is the DSC260. It is a single rack space, two-channel digital
controller with six outputs assignable to either or both inputs. As such it may be used as an HLA system controller
for 4895's only. For example, it is well-suited for applications where it will reside in a dedicated amplifier rack to
provide control for a group of 4895 speakers. This application may be useful when setting up dedicated down-,
front-, near-fill or delay speaker systems. It can also be used as a dedicated controller for subwoofers on a
separate console output.
When using 4895's and 4897's together, a pair of DSC260's will offer full stereo system control, with one unit
handling the left and right feeds to the three-way 4895's and the second unit handling subwoofer feeds to the
4897's.
In the DSC260, Over 600 milliseconds of delay can be assigned in 21 microsecond increments. A
budget of up to 30 bands of parametric equalization can be assigned to the inputs or outputs, depending on the
slopes of the assigned crossovers. Permanent installations will benefit from this additional equalization as the
DSC260 can be used for all room e.q. adjustments.
Like the DSC280, output limiters on the DSC260 can be set for each band. Gain levels can be adjusted
from -30 to +10 dB. "MIDI sysex dump" can be used to save and transfer presets between units and to archive
settings.
On the left of the front panel of the DSC260 there are six Mute keys for the outputs, along with four-
segment LED bargraph metering on the outputs and on the two inputs. On the right of the front panel is a 2 x 16
character LCD display screen. The bottom line of the display shows the program number and the name of the
stored program. To the left of this display are the parameter increment and decrement keys, labeled "+" and "-"
and used for adjusting individual parameters. Next to these there are keys to Store and Recall presets, also used to
confirm certain operations. To the right of the display are four access buttons for moving the display through the
locations on the parameter grid.
For more detailed information on using the DSC260, consult the DSC260 Owners Manual.
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