Rane RPE 228 Manual - Manual (Page 2)

Manual-2
FRONT PANEL DESCRIPTION
ቢ POWER indicates that the unit is happily connected to a powered remote supply.
ባ Parameter Switch adjusts the frequency of the Low-Cut filters for each Channel incrementally up to the maximum setting,
then down to the minimum setting, and back.
ቤ COM (yellow, communications) flashes when a message for the unit or the specific Channel is received from a PC compat-
ible computer. There is a brief flash when using the Remote Switch Interface is used.
ብ BYPASS (red) lights whenever the audio relay Bypass for the Channel is active. This occurs for a few seconds after power-
up, or when BYPASS is selected in RaneWare.
ቦ SIGNAL (green) indicates the presence of a significant audio signal on the Input to the Channel (typically -27 dBu).
ቧ CLIP (red) flashes when an audio level for the Channel in the unit approaches the clipping level (typically 3 dB below
clipping).
RPE 228 CONNECTION
When connecting the RPE 228 to other components in
your system for the first time, leave the power supply for last.
This will give you a chance to correct any mistakes before
any damage is done to your speakers, ears, etc.
The RPE 228 will operate at moderately high ambient
temperatures. Large racks of equipment may generate excess
heat, requiring extra space beween units, and/or forced air
ventilation to reduce the ambient temperature in the rack.
The RPE 228 has balanced Inputs and Outputs, with
chassis-grounded shields. This chassis ground is not signal
ground, although the two grounds are connected internally.
The chassis ground is intended to be connected to an earth
ground. The RPE 228 is intended to be connected to other
balanced equipment with chassis-grounded shields. Connect
the non-inverting audio lines to the ‘+’ terminals, and the
inverting lines to the ‘–’ terminals. Connect the cable shields
to the center terminal on the terminal block. Connect shields
at both ends of the cables.
There is a #6-32 screw provided for chassis ground.
Connect a wire from this point to a known earth ground, such
as an amplifier chassis. This may not be necessary when
installed in a rack with other grounded units.
The RPE 228 requires a Rane RS 1 or compatible power
supply, provided with each unit. Optionally, our model RAP
10 power supply provides power for up to ten units at a time.
To control the units from a computer, use nine-pin RS-232
cables which are 50 feet or shorter. The cable must not be a
null-modem type. A short cable is supplied for connecting
adjacent units. Daisy-chain up to 16 units at a time by
connecting the COM port on the computer to the INPUT
connector on the first unit, and the OUTPUT connector of
each unit to the next unit’s INPUT.
The DEVICE ADDRESS switch identifies each unit with
an ‘address’, and must be set uniquely for each unit. The
switches form a binary code from 0 through 255. Only the
numbers 1-250 may be used. The place values of each switch
are marked on the rear panel. To set a specific address, refer
to the “Setting the Device Address” section.
The REMOTE SWITCH interface provides contact closure
control for up to eight preset memories. No computer is required
after the initial setup. There are nine screw terminals; one is
chassis ground, and the other eight are for Memories 1-8.
Connection of one of these to ground causes both Channels of
the unit to recall a preset Memory. Multiple units may be
controlled by connecting these terminals in parallel. Either
momentary or latching switches may be used. A latching switch
should only close one contact at a time. Use of a latching switch
results in an additional Memory recall upon power-up.