Rane Welder RPM 26z 用户手册

Manual-4

The 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 of-

fers acceptable noise immunity and very 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 8 VIP pins 

supports either switch closure Preset recall or zero-to-five 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.

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 

web page. Be certain to appropriately set the VIP Allocation 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. 

1. Use the Drag Net software Recall button which is only in-

tended for the system installer/designer.

2. Use an Ethernet command from an AMX or Crestron Ether-

net-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/Duck-

er's Input in Drag Net's Remote Map. Again, see our Drag Net 

Applications for examples.]

pin 1

GND

Contact

Closure

20 kΩ (linear)

Level Control

Potentiometer

(examples for VIP pin 1)

GND

REF

pin 1

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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 us-

ing 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 

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.

To download the AMX or Crestron control code and documen-

tation, visit www.rane.com/dragnet

The Ethernet port is used to configure, monitor, and control the 

RPM 26z via standard 10Base-T Ethernet communication. Use 

an Ethernet crossover cable (one is included with each unit) to 

connect the RPM 26z directly to a computer. Use a standard 

(non-crossover) Ethernet cable if the RPM 26z and computer are 

connected indirectly using an Ethernet repeater hub or switch.  

All devices connected to the Ethernet port, including 

repeater hubs, switches, and the computer’s Network Interface 

Card (NIC) must support 10Base-T communication.