Manual-3 rear panel description – Rane DA 26 (2003 version) User Manual

Page 5

Manual-3

REAR PANEL DESCRIPTION

PRIORITY INPUT connector and MIC/LINE switch:

The balanced PRIORITY INPUT operates at line or mic level, deter-

mined by the MIC / LINE switch. This Input accepts unbalanced signals, however, we do not recommend unbalanced operation

unless the source is within 3 feet [one meter]; then only connect (+) and (GND). Note: the Priority Input is not inﬂuenced by the

AGC, Crossover, Output trims or Remote Level controls. The gain range for MIC level Input is 30 to 60 dB. The gain range for

LINE level Input is 0 to 30 dB.

PRIORITY ASSIGN port:

The state of the PRIORITY ASSIGN port determines Priority Input assignment to each of the six

Outputs. Assignment pins are active low with passive internal pull-up. Any combination of pins may be active at one time. The

select ALL pin is provided for convenience. To complete an assignment, the Output must be selected by the PRIORITY ASSIGN

port and Priority Detect must be active. Note that if a combination of Crossover Outputs is used in one zone, all Outputs serving the

zone must be selected by the PRIORITY ASSIGN port. Variations in wire type do not greatly aﬀect the performance of this port.

However, 22-gauge stranded wire with a ﬂexible jacket is recommended. Unshielded multi-conductor cable is OK for shorter runs

(less than 100 feet). For longer runs, we recommend shielded cable.

LINE INPUT connector:

Connect a balanced line level source to the Line Input. The Line Input accepts an unbalanced Input

connected to (+) and (GND), but we do not recommend unbalanced connection unless the distance to the source is less than one

meter; then only connect (+) and (GND).

OUTPUT and REMOTE connectors:

are on single 6-pin Euroblocks, one set for each Output. Outputs are line-level, balanced,

and hopefully driving a balanced equalizer or ampliﬁer. If not, keep cable lengths short and consult RaneNote 110, “Sound System

Interconnection” located elsewhere in this manual.

Connections for optional wired Remote Level controls are provided for each Output. Note: Remote Level controls do not aﬀect the

level of the Priority Input. Each port provides a 5 volt reference voltage (REF), a control voltage input (Vc) and a ground reference.

Gain control law is 50 mV/dB. See Setup and Operation, step 6 for details.

Chassis ground point:

A #6-32 screw is used for chassis grounding purposes. If after hooking up your system it exhibits excessive

hum or buzzing, there is an incompatibility in the grounding conﬁguration between units somewhere. Your mission is to discover

how your particular system wants to be grounded. Here are some things to try:

1. Try combinations of lifting grounds on units that are supplied with ground lift switches or links.

2. If your equipment is in a rack, verify that all chassis are tied to a good earth ground, either through the line cord grounding pin or

the rack screws to another grounded chassis.

3. Units with outboard power supplies, such as the DA 26, do not ground the chassis through the line cord. Make sure that these

units are grounded either to another chassis which is earth grounded, or directly to the grounding screw on an AC outlet cover by

means of a wire connected to a screw on the chassis with a star washer to guarantee proper contact. If you are connecting the DA

26 Outputs directly to a power ampliﬁer, be sure to connect a ground wire to the ampliﬁer chassis.

Refer to the RaneNote “Sound System Interconnection” (supplied with this manual) for further grounding information.

Remote POWER supply input:

The DA 26 is supplied from the factory with a Model RS 1 Remote Power Supply suitable for

connection to this input jack. The power requirements call for an 18 VAC center-tapped transformer only. This is not a telephone

jack. Never use a power supply with your DA 26 other than the one supplied or an exact replacement obtained from Rane Corporation.

Using any other type of supply may damage the unit and void the warranty.

CLASS 2 EQUIPMENT

ACN 001 345 482

DA 26

MADE IN U.S.A.

RANE CORP.

+ -

Vr Vc

+ -

ALL

Vr Vc

+ -

Vr Vc

+ -

Z1 Z2

+ -

Vr Vc

+ -

ALL

Vr Vc

+ -

Vr Vc

+ -

Z1 Z2

+ -

LINE

MIC

600mA

RMT

OUT

RMT

OUT

RMT

OUT

RMT

OUT

RMT

INPUT

LINE

ASSIGN

INPUT

PRIORITY

POWER