Crestron electronic Crestron MC2E - Manual (Page 12)

2-Series Compact Control System Crestron MC2E
9. To support RS-485, tie pin 1 (RXD-) to pin 9 (TXD-)
and pin 4 (TXD+) to pin 6 (RXD+) in the cable. COM (DB9)
CONNECTOR
RS-485 BUS
(Refer to table at right.) Tie Pins 1 & 9 -
Tie Pins 4 & 6 +
Pin 5 G
10. The Cresnet Poll Accelerator effectively increases the network speed, fan-out and device addresses by a factor of 8 for each Poll Accelerator added
to the system.
11. The MC2E can be powered via the 24 VDC jack or the NET port. Be sure to use a Crestron approved power supply as another may cause damage.
12. Use care in wiring installations to avoid applying 24 VDC to Cresnet wiring from an AC power pack as well as from a system device that contains
its own power supply. Although this condition should not cause any damage, Crestron does not recommend it. In those network configurations that
require more power than can be supplied by the primary power supply alone, disconnect the +24 VDC Cresnet wire from those devices that will be
powered by an AC power pack.
13. An optional power pack (PW-2420RU) provides 38 watts to Cresnet devices when connected to the MC2E.
Industry Compliance
As of the date of manufacture, the MC2E has been tested and found to comply with
specifications for CE marking and standards per EMC and Radiocommunications
Compliance Labelling.
NOTE: This device complies with part 15 of the FCC rules. Operation is subject to
the following two conditions: (1) this device may not cause harmful interference and
(2) this device must accept any interference received, including interference that may
cause undesired operation.
This equipment has been tested and found to comply with the limits for a Class B
digital device, pursuant to part 15 of the FCC Rules. These limits are designed to
provide reasonable protection against harmful interference in a residential
installation. This equipment generates, uses and can radiate radio frequency energy
and if not installed and used in accordance with the instructions, may cause harmful
interference to radio communications. However, there is no guarantee that
interference will not occur in a particular installation. If this equipment does cause
harmful interference to radio or television reception, which can be determined by
turning the equipment off and on, the user is encouraged to try to correct the
interference by one or more of the following measures:
Reorient or relocate the receiving antenna.
Increase the separation between the equipment and receiver.
Connect the equipment into an outlet on a circuit different from that to
which the receiver is connected.
Consult the dealer or an experienced radio/TV technician for help.
8 • 2-Series Compact Control System: MC2E Operations Guide – DOC. 6142A