Rane SRM 66 用户手册

Manual-3

� POWER input connector. Use only an RS 1, or other Remote AC power supply approved by Rane. This unit is supplied

with a remote power supply suitable for connection to this input jack. Consult the factory for a replacement or a substitute.
This unit’s power input is designed for an AC supply, delivering 18 volts, from a center-tapped transformer capable of
supplying at least the 750 mA of current demanded by this product. Using any other type of supply may damage the unit and
void the warranty.

�ÿChassis ground point. A #6-32 screw is supplied for chassis grounding purposes. Units with external power supplies such

as this SRM 66 supply do not ground the chassis to earth through the line cord. This chassis connection is critical and in
most installations, required by law. Many chassis ground this point to an amplifier chassis ground or directly to the ground-
ing screw on a grounded AC outlet cover by means of a wire secured on both ends with star washers to guarantee proper
contact. See the CHASSIS GROUNDING note below.

� FP LOCK button. When pressed in, locks out all front panel control except for Group Levels and Memory Recall. The

SR 1L remotes (sold separately) are also able to control Group Levels with FP LOCK engaged. The user is able to view, but
not edit, all Edit pages.

� MEMORY RECALL PORT (MRP). This Port allows any remote switch to recall any of the system Memories. The first

eight Memories recall with simple switch closure to a single pin. A “binary” wiring mode allows access to more complex
Memory recall functions. See Figure 8 on page Manual-6. Complete programmability of the MRP is possible using the Edit
MRP Configuration feature found in SRM Exchange software. See DSC 1 & SRM Exchange software on page Manual-7.

� REMOTE INTERFACE PORT (RIP). This Port supports up to seven optional SR 1L “Smart” digital Remote controls as

seen in Figure 4 on page Manual-5. Each Remote may be assigned to adjust the Level of any one of the six SRM 66 Output
Groups or the Master Group.

� OUTPUT GAIN switches. These assist setting the optimal gain structure of the Output stage, depending on what the

following device would like to see (or hear). Balanced signals usually require a +4 dBu setting (button out), and unbalanced
signals usually require the -10 dBV setting (button in).

� OUTPUTS. These balanced Euroblock connectors may be wired balanced or unbalanced. See page Manual-1 or RaneNote

110, “Sound System Interconnection” later in this manual for assistance.

� INPUT GAIN switches. These assist setting the optimal gain structure of the Input stage, depending on the level from the

previous device. Balanced signals usually require a +4 dBu setting (button out), and unbalanced signals usually require the -
10 dBV setting (button in). Use the MIX INPUT HEADROOM meters as a guide for determining GAIN switch position (see
� in the Front Panel Description).

� INPUTS. These balanced Euroblock connectors may be wired balanced or unbalanced. See page Manual-1 or RaneNote

110, “Sound System Interconnection” elsewhere in this manual for assistance.

If after hooking up your system it exhibits excessive hum or buzzing, there is an incompatibility in the grounding inside

a unit(s) or between units somewhere. Your mission is to discover how your particular system wants to be grounded. Try
these things:
1. Try combinations of lifting grounds on units that are supplied with ground lift switches or links. Other than in your own

home, it is illegal and unsafe to use 2-prong to 3-prong AC line cord cheaters, even though this is a common (short term)
remedy. Using such “cheaters” can (and has been known to) electrocute or kill people. [Ace Frehley and Keith Richards
survived; Keith Relf (The Yardbirds) and John Rostill (The Shadows) did not.]

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

grounding pin (3

rd 

prong) or the rack screws to another grounded chassis.

3. Units with outboard power supplies may 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 a grounded AC outlet
cover.

Please refer to RaneNote 110 “Sound System Interconnection” (elsewhere in this manual) for further information.