Page 28 Page 29
R/C Manual 3. 1788A-R HADRWARE REMOTE
Refer to Section 2 of this manual for full coverage of applying MIDI control to the
1788A-R.
3.5.4 RJ-45 Ethernet Jack
This is the exclusive portal for piping remote control to 1788A’s. It must be connected to a
proper 10 or 100 Base-T LAN structure that has a DHCP server or router. Details of proper
network construction are covered in Section 4 of this manual.
3.6 INSTALLATION
The Model 1788A-R occupies three rack spaces (135mm or 5-1/4 inches) of a standard
EIA equipment rack.
3.6.1 Interface Cable
The Power Unit and Control Unit are connected together through a standard 25-pin D-
Sub straight-through printer cable. The length of this cable should be less than 6.5 feet
(2 meters) to prevent power loss. Use only shielded cables.
3.6.2 Rack Mounting
When rack mounting, use appropriate cushioned rack screws with the supplied rack ear
adapters. Never restrict air flow through the device’s vents. When installing the units into
a rack, distribute the units evenly. Otherwise, hazardous conditions may be created by
an uneven weight distribution. Connect the unit only to a properly rated supply circuit.
Reliable earthing (grounding) of rack mounted equipment should be maintained. Try not
to position the 1788A-R directly above devices that generate excessive heat such as power
amplifiers (unless adequately ventilated).
The Power Unit should be bolted directly to the back of the Control Unit using furnished
UNC 6-32 x 1/4 inch screws. Both units’ 25-pin D-Sub connectors should be connected
together using the supplied short-length cable.
3.6.3 Desktop Mounting
The Power Unit may be remotely located to permit the Control Unit to lay flat on a
desktop. For this purpose, a second D-Sub side-facing connector is provided for flat cable
entry. It’s a good idea to place non-slip adhesive rubber feet on the Control Unit’s under-
side. The Power unit may be mounted under the desk or on a sidewall. Make sure not to
block the air vents.
3.6.4 AC Line Connection & Power
Use only a power cord that carries approvals for use in your location. The 1788A-R’s
Figure 3-5. Rack Mounted Configuration