Gilderfluke&Co 16 Bit CD-Quality Digital Audio Systems - Manual (Page 36)

- AB/DR-3000 H ARDWARE C ONFIGURATION -
There are four that are set using jumpers on each card. With the exception of the jumper which is
used to enable and disable the EEPROM, you should never have to adjust any of these.
J
UMPER
A
DJUSTMENTS
:
JP4) A18 or /WR: This jumper selects what signal will be sent to pin number thirty-one on the
AB/DR-3000Õs onboard EPROM sockets. It is normally set to the ФA18Х side, unless FLASH ROMs
are installed on the card.
JP5) V+ or A19: This jumper selects what signal will be sent to pin number one on the AB/DR-
3000Õs onboard EPROM sockets. It is normally set to the ФA19Х side, unless FLASH ROMs are in-
stalled on the card.
JP6) Clock Enable: (available only on early DR-3000s) This jumper must be inserted on one,
and only one DR-3000 within a set of interconnected card cages. This jumper, when installed,
causes that card to act as the master clock for all the other DR-3000s. That is why only one
card can be set to act as a clock at one time. If more than one card is enabled as a clock, or
no DR-3000s have been enabled to act as the clock, then none of the DR-3000s in the inter-
connected card cages will run. This jumper is not available on the AB-3000 AudioBricks. The
clock is provided by the card cage for all later DR-3000s.
JP7) EEPROM Write Protect: All the configuration data for a AB/DR-3000 is stored in a type of
nonvolatile memory chip called an EEPROM. When this jumper is installed in the WRITE PRO-
TECT position, it disables all writes to the configuration EEPROM. This locks your current configu-
ration against accidental or unauthorized changes until the jumper is removed. When the EEP-
ROM has had been write protected you will find the following changes in the repeater:
a) Any front panel adjustments that are enabled will not be saved. When the repeater is
reset (turned off and then on again), the DEFAULT setting for these adjustments will be re-
turned.
b) When entering CONFIGURATION MODE, a message will be displayed telling you no
changes will be saved.
c) Once in configuration, the title of each menu will tell you that the EEPROM has been
write protected.
d) While in configuration mode, all commands will behave normally, but no changes will be
saved.
e) The SET DELAY command from the serial port will not alter the current settings.
f) If you change the Digital Audio Buss bank selection, the reboot function will not work.
JP10, JP11) 1/4 J6 Input Internal/External Power: (AB-3000Õs only) These jumpers set whether
the 1/4 J6 input to the AB-3000 will be powered by externally (normal mode) or by the AB-3000
itself. The latter allows simple switch closures to be used to trigger the AB-3000. On revision 1
AB-3000Õs jumpers are inserted to set the port to internal power. On 2.0+ AB-3000Õs, a pair of
three pin headers are used. With the jumpers in the left position the 1/4 J6 is set for internal
power. With the jumpers set in the right position it is set for external power.
G ILDERFLUKE & C O . ¥ 205 S OUTH F LOWER S T . ¥ B URBANK , C ALIF . 91502-2102 ¥ 818/840-9484 ¥ FAX 818/840-9485
28 of 92