Manual-4
The VIP inherently prefers linear taper 20 k
Ω
potentiometers
(Rane VR 2), which provide a nice audio taper “feel” for the
end user. When used with suitable twisted pair wiring, the 10
k
Ω
value also offers acceptable noise immunity and long cable
lengths.
AMX and Crestron Control
There 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 eight
VIP pins supports either switch closure Preset recall or 0-5 volt
control of Level.
Many AMX/Crestron applications require simple Level con-
trol and/or Preset recall. This is most easily accomplished using
the VIP (Versatile Input Port) found on all Drag Net devices.
There are always more Drag Net products coming — both hard-
ware 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. There are more details about this
functionality in the Drag Net Help file and on our Drag Net Ap-
plications page. Be certain to appropriately set the VIP Alloca-
tion in Drag Net's Parameter Window.
If GND contention of two or more pins simultaneously
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. This permits a hier-
archy 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.
There 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 0-5 VDC source 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. This keeps
the max and min burdens within the Drag Net device — but
only when using the VIP pin to control Levels, not when adjust-
ing 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 control
To download the AMX or Crestron control code and docu-
mentation, visit these web pages:
For AMX NetLinx code:
www.rane.com/dnamx.html
For Crestron code:
www.rane.com/dncrest.html
Ethernet Port
The Ethernet port is used to configure, monitor, and control
the RPM 2m via standard 10Base-T Ethernet communication.
Use an Ethernet crossover cable (one is included with each unit)
to connect the RPM 2m directly to a computer. Use a standard
(non-crossover) Ethernet cable if the RPM 2m 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.
pin 1
GND
Contact
Closure
20 kΩ (linear)
Level Control
Potentiometer
VIP CONNECTION
(examples for VIP pin 1)
GND
REF
pin 1
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