Page 1
HARDWARE MANUAL
PROGRAMMABLE
MULTIPROCESSOR
INPUT OUTPUT
1 2
1 2
VIP POWER
ETHERNET STATUS
RPM 2
PRESET
QUICK START
is section is intended to help you make the physical connections and software manipulations necessary to get up and
running with your sleek new RPM 2. If you don’t read the entire
Hardware Manual, at least read this section. It is also recommended that you read the Quick Start section of the Drag Net
Software Manual. If the Drag Net software is not yet installed
on your computer, please install it now.
To be safe, leave the audio connections until last. Begin by
connecting the IEC power cord. Observe that the POWER LED
on the front panel illuminates. After a few seconds, the STATUS
LED should turn from red to yellow to green, and the PRESET
display should have a number in it (00, if it’s the first time you’ve
powered the device). If the POWER comes on, but the STATUS
LED does not turn green, contact the factory.
Connect one end of the Ethernet crossover cable (supplied
with the unit) to the 10Base-T jack on the rear panel. Connect
the other end of the cable to an Ethernet port on your computer.
e LINK LED on the rear panel should be lit. If it is not,
verify that you are indeed using a crossover cable, not a standard Ethernet cable. Only use a standard Ethernet cable if you
are connecting the RPM 2 and a computer indirectly using an
Ethernet switch. Launch the Drag Net application and follow
the steps to create a new project and new RPM 2 device configuration. Click the Congure Hardware IP shortcut and follow
the instructions to set the unit’s IP address to be compatible with
your computer’s Network settings. Tip: If you aren't sure what IP
to use, try the address 192.168.69.69 and subnet 255.255.255.0.
is finds the default factory address without manually setting it.
RPM 2
PROGRAM MABLE MULTIPROCESSOR
Now click the Poll button in the toolbar. A device name and
IP address should appear under the Live folder in the Project
window. If a device does not appear, consult Drag Net’s online
Help for instructions on configuring and verifying your computer’s Network settings.
e audio path within the RPM 2 is displayed in Drag Net’s
Device Conguration window as a collection of blocks wired
together to form a Processing Map. ese maps are created
offline as Storage configurations, which are then transferred to
a Live unit. Drag blocks from the Palette onto the Process-
ing Map and wire them together to create the audio path. Save
this file frequently using the File > Save command. Transfer
the selected Storage configuration to a Live unit using the
Transfer Cong button in the Project window. A new, minty
green Device Conguration window opens once the transfer
is complete, indicating you are now online with a Live device.
Double-click a processing block to display and adjust its Prop-
erties (parameters) in real time on a Live device — there is no
need to go offline to make parameter changes.
Once you have a useful configuration in the unit, connect
balanced audio INPUTS and OUTPUTS to the Euroblocks on
the rear panel, then turn on the amplifier. As a precautionary
measure, all outputs are muted during and after a configuration
transfer. Unmute each output individually, or use the handy
Mute Outputs button in the toolbar. Once all outputs are
unmuted, audio passes through the unit along the connections
you defined.
WEAR PARTS: is product contains no wear parts.
Manual-1
Page 2
Front Panel Description
PROGRAMMABLE
MULTIPROCESSOR
INPUT OUTPUT
1 2
1 2
VIP POWER
ETHERNET STATUS
RPM 2
1 1 2 3 4 5 6
PRESET
RPM 2
ACN 001 345 482
DEFAULT
100-240V
20 WATTS 50/60 Hz
COMMERCIAL AUDIO
EQUIPMENT 24TJ
MADE IN U.S.A.
RANE CORP.
10Base-T
LINK
OUTPUTS
+5V
100 mA
0-5V
VERSATILE INPUT PORT
REF
1 2 3 4 5 7 6 8
GND
REF
1 2 3 4 5 7 6 8
GND
– + + –
– + + –
– + + –
– + + –
THIS DEVICE
COMPLIES WITH
PART 15 OF THE
FCC RULES FOR A
CLASS 'B'
COMPUTING
DEVICE.
INPUTS
2 1 2 1
LAN
FOR CONTINUED
GROUNDING
PROTECTION
DO NOT REMOVE
SCREW
R
1 7 6 4 3 25
1 Signal/Overload LED meters indicate the presence of significant audio signal or overload for Inputs and Outputs. ese 3-color
meters indicate the available headroom once the analog signal has been converted to digital: -4 dBFS (red, near clipping), -12
dBFS (yellow, high normal level), and -48 dBFS (green, low level). e signal level in the RPM 2 depends on the input and output
settings and is displayed in Drag Net’s Meter window when the Converters tab is selected.
2 PRESET LED displays the number of the most recently recalled Preset, numbered 0 through 24.
3 VIP LED flashes when a change is detected on the Versatile Input Port (VIP). is port is used for direct electrical connections to
potentiometers, switches or other logic ports. See page Manual-4 for details.
4 ETHERNET LED flashes when an Ethernet data packet for this device is received.
5 STATUS LED reflects the overall status of the unit:
Red - initializing (briefly) or possible internal error.
Yellow - working, but not yet processing audio.
Green - processing audio.
6 POWER LED lights solidly when the unit is powered on.
Rear Panel Description
1 POWER IEC jack connects to AC line voltage, 100-240 VAC ±10%.
2 Balanced analog audio INPUTS 1 and 2 on Euroblock connectors. See “Audio Connections” on the next page.
3 Balanced analog audio OUTPUTS 1 and 2 on Euroblock connectors.
4 VERSATILE INPUT PORT provides 8 logic or voltage inputs for remote level control and Preset recall on a Euroblock.
5 LAN and LINK reflect the state of the Ethernet connection. LINK lights solidly when a valid connection to another Ethernet
device (e.g., a PC) is detected. LAN flashes when communicating with another Ethernet device.
6 10Base-T jack accepts a standard Ethernet cable with a RJ-45 connector.
7 DEFAULT button recalls Preset 1 when pressed. Holding this button while applying power puts the unit into a special codeload
mode for updating firmware.
Manual-2
Page 3
Audio Connections
As a safety precaution, turn all devices (especially power amplifiers) OFF when making connections. Doing so gives you a chance
to find and correct wiring mistakes and prevent damage to your
amplifiers, speakers, ears, pets, etc.
Analog Inputs and Outputs
e RPM 2 has two balanced analog Inputs and two bal-
anced analog Outputs.
For each Input or Output Euroblock connector:
• Connect the (positive) audio line to the ‘+’ terminal.
• Connect the (negative) audio line to the ‘–’ terminal.
• Connect the cable shield to the shield terminal.
For those installations where the RPM 2’s internal shield-
to-chassis connection causes interference, connect each shield
directly to the chassis PEM nut located above each Euroblock
connector, keeping the shield wrapped around the audio conductors as much as possible.
For optimum Electromagnetic Interference (EMI) immunity,
connect the shields at both ends of the cable. See the RaneNote
“Sound System Interconnection” for more information on system
connections and proper grounding practices.
Analog Input Stage
Each analog input uses a fixed analog gain approach. A Digital
Trim control is located immediately after the A/D converter. e
RPM 2 takes the following approach to input clipping:
e analog input stage accepts a full level of +24 dBu. It
is not possible to clip the A/D converter with normal audio
sources, since there is no additional gain between the initial
input stage and the A/D converter. e Digital Trim control,
located after the A/D converter, can be set to clip the signal to
your heart’s content, so adjusting this trim to provide the hottest
signal to the DSPs without clipping is the most important step
when setting up gain structure. For this reason, a dedicated
meter displaying the signal level being passed to the DSPs is
provided in each Analog Input block.
If the DSPs are working with a clipped signal, the audio is (as
expected) distorted and none too pretty, but it is not a drastic,
damaging sound. And while it’s technically possible to write a
DSP algorithm to emulate the glorious clipping distortion of
vacuum tubes, it’s not particularly useful for an installed sound
system, where the DSP power could be put to better use removing that annoying 500 Hz feedback from the podium mic. Plus,
they don’t yet make DSP chips with gold-plated substrates for
those celestial highs and that moist, supple midrange.
Analog Output Stage
Each analog output uses a similar approach. ere is a Digital
Trim control located immediately before the D/A converter. It’s
as simple as that.
Control Connections
Versatile Input Port (VIP)
Eight logic input pins are provided, each capable of accepting
DC voltage between 0-5 VDC. VIP pins are used with contact
closure switches for Preset recall, or with potentiometers for
remote Level control. e functionality (Preset recall versus
control) of each pin is assignable as part of the Device Configuration.
• e maximum allowable voltage on any VIP pin is 5.3 VDC.
• Use of twisted pair cable is recommended for lower noise.
• If an external device is used to generate a 0 to 5 volt signal,
connect the ground of the external device to the VIP GND.
Preset Recall Using Contact Closure Switches
e minimum “low” voltage required to detect a contact closure
and change Presets is 2.5 V. Since the internal pull up is 100 kΩ
to +5 V, it is possible to calculate the maximum allowable cable
length, provided the wire resistance per foot (or meter) is known.
Example:
To be safe, let’s allow a maximum of 80 kΩ worth of cable
resistance. is value keeps the voltage divider formed by the
100 kΩ internal resistance and 80 kΩ cable resistance from
dropping below 2.5 V.
(5 V * 100 kΩ) / (100 kΩ + 80 kΩ) = 2.777 V
If the cable resistance is 30 Ω per 1,000 feet (305 meters)
(1,000 ft / 30 Ω) * 80,000 Ω = 2,666,666 ft (813 km)
us, you can only use 2,666,666 feet (505 miles) of twisted
pair cable before the Preset recall functionality becomes intermittent (assuming the cable is properly twisted and not run
through excessive magnetic or electric fields).
Remote Level Control Using Potentiometers
e VIP inherently prefers linear taper 10 kΩ potentiometers,
which provide a nice audio taper “feel” for the end user. When
used with suitable twisted pair wiring, the 10 kΩ value also offers acceptable noise immunity and long cable lengths.
AMX and Crestron Control
ere are two ways to control a Drag Net device from an AMX
or Crestron system. Use either Ethernet connectivity or use the
rear panel Versatile Input Port (VIP). Each of the 8 VIP pins
supports either switch closure Preset recall or zero-to-five volt
control of Level.
Many AMX/Crestron applications require simple Level control and/or Preset recall. is is most easily accomplished using
the VIP (Versatile Input Port) found on all Drag Net devices.
ere are always more Drag Net products coming — both hardware and software, so check our home page for the most recent.
VIP Preset Recall
Connect a switch closure or relay to a VIP pin and short it to
the ground (GND) pin to recall the corresponding Preset. For
example, shorting VIP pin 1 to the GND terminal recalls Preset
1; pin 2 recalls Preset 2, etc. ere are more details about this
functionality in the Drag Net Help file and on our Drag Net Applications page. Be certain to appropriately set the VIP Allocation in Drag Net's Parameter Window.
Manual-3
Page 4
If GND contention of two or more pins simultaneously
pin 1
GND
Contact
Closure
20 kΩ (linear)
Level Control
Potentiometer
VIP CONNECTION
(examples for VIP pin 1)
GND
REF
pin 1
occurs, the highest-numbered VIP pin takes precedence. For
example, if pin 3 is shorted to GND and pin 6 is then shorted
to GND, Preset 6 is recalled. If pin 3 is closed and then pin 2,
nothing happens -- Preset 2 is not recalled. is permits a hierarchy of Presets when using VIP pin closures for tiered priority
paging. Since there are only eight VIP pins, you can only recall
up to eight Presets using switch closures.
ere are two ways to recall more than eight presets. Either
use the Drag Net software Recall button which is only intended
for the system installer/designer, or use an Ethernet command
from an AMX or Crestron Ethernet-equipped product.
[When using Drag Net's Auto Mixer/Ducker block, you have
the ability to link a VIP pin closure to a push-to-talk switch in a
paging or boardroom application. When using the Ducker block
in these applications, the VIP pins act independently provided
you Group the appropriate VIP pin with the Auto Mixer/Ducker's Input in Drag Net's Remote Map. Again, see our Drag Net
Applications for examples.]
VIP Level control
Connect a zero to five volt DC voltage to a VIP pin from an
AMX or Crestron card to adjust any or all Level blocks placed in
the Processing Map. Use Groups in Drag Net's Remote Map to
link one or more Level blocks so they track each other when using a VIP pin. Be certain to appropriately set the VIP Allocation
in Drag Net's Parameter Window. When using VIP pins with
Level blocks, set the minimum and maximum for each Level
block by double-clicking it while it's in a Remote Map Group.
is keeps the max and min burdens within the Drag Net device
— but only when using the VIP pin to control Levels, not when
adjusting Levels from Ethernet commands.
You can use up to eight voltage control inputs linked to
Level(s) using the rear panel VIP pins. Combinations of Preset
switches & voltage Level “pots” are possible as long as combined,
they do not exceed the eight pins provided.
Since you can Group any or all Level blocks in Drag Net's
Remote Map, it's much easier to implement a stereo level control
since the Drag Net device is burdened with the task of tracking
many Levels. You can use this to your advantage when using VIP
pins to adjust multiple zones or levels. Since you can place the
Level block anywhere within the Drag Net Processing Map, you
can Group Level blocks at the input, at the output or anywhere
in-between — just place the Level block where you want it.
Ethernet Port
e Ethernet port is used to configure, monitor, and control
the RPM 2 via standard 10Base-T Ethernet communication.
Use an Ethernet crossover cable (one is included with each unit)
to connect the RPM 2 directly to a computer. Use a standard
(non-crossover) Ethernet cable if the RPM 2 and computer are
connected indirectly using an Ethernet switch.
All devices connected to the Ethernet port, including
switches and the computer’s Network Interface Card (NIC) must
support 10Base-T communication..
Ethernet control
To download the AMX or Crestron control code and documentation, visit these web pages:
For AMX NetLinx code:
www.rane.com/dnamx.html
For Crestron code:
www.rane.com/dncrestron.html
©Rane Corporation 10802 47th Ave. W., Mukilteo WA 98275-5098 USA TEL 425-355-6000 FAX 425-347-7757 WEB www.rane.com
Manual-4
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