BSS Audio
DPR-402 User Manual v3.0
Page 10
7 Mechanical Installation
A vertical rack space of 1U (1¾" / 10½mm) deep is required. Ventilation gaps are
unnecessary.
If the
DPR-402
is likely to undergo extreme vibration through extensive road
trucking and touring, it is advisable to support the unit at the rear and/or sides to
lessen the stress on the front mounting flange. The necessary support can generally
be bought ready-built, as a rack tray. As with any low-level signal processing
electronics, it is best to avoid mounting the unit next to a strong source of magnetic
radiation, (for example, a high power amplifier), to help keep residual noise levels
in the system to a minimum.
8 Mains Power Connection
Voltage:
The
DPR-402
operates on either 120 or 240 volt supplies. Use the voltage
selector switch to choose the required voltage setting.
Frequency:
Both 60Hz and 50Hz are acceptable.
Grounding:
The
DPR-402
must always be connected to a 3-wire grounded
('earthed') AC outlet. The rack framework is assumed to be connected to the same
grounding circuit. The unit must NOT be operated unless the power cables ground
('earth') wire is properly terminated - it is important for personal safety, as well as
for proper control over the system grounding.
AC Power Fusing:
The incoming line power passes through an anti-surge ('T') fuse,
accessible from the rear panel. If the fuse blows without good reason,
refer to
section XX
. Always replace with an identical 20mm x 5mm 'T' fuse, rated at either
250mA or 200mA for 240V or 120V settings respectively, for continued protection
from equipment damage and fire.
Power ON:
This is indicated the green 'ON' LED located under the CH 'IN'
switches. If this LED is not lit when power is connected and the 'POWER' switch is
depressed.
9 Input and Output Connections - Rear Panel Facilities
9
.1 Inputs
The input is a 10K ohm balanced type on a standard 3 pin female XLR which will
accept levels up to +20dBv. The '+' or in-phase connection is to pin 3 and the '-'
or out-of-phase connection is to pin 2. There is no connection to pin 1, and input
cable shielding should be derived from the equipment which is providing the input
signal. When feeding the
DPR-402
from unbalanced sources, connect the signal
'hot' to pin 3, and the signal ground to pin 2.
