User's Manual

PMP 400/430 and PTP 200 Series Canopy User Guide
Supplement
Issue 4 0 – DRAFT 6 November 2009 Page 20 of 64
2.3 CONFIGURATION OPTIONS – RF, IP, DFS
These systems use the Canopy Media Access Controller (MAC) layer. Settings like Downlink
Data %, Range, and Control Slots are similar to Canopy FSK radios. An AP can communicate to
over 200 SMs, similar to a Canopy FSK AP.
The GUI (Graphical User Interface) is almost identical to Canopy’s, with a few additions to
support OFDM-specific features.
Network features like High Priority using DiffServ, MIR, CIR, NAT, DHCP and VLAN are available
for the PMP 400/430 and PTP 200 Series OFDM radios, and are configured in the same way as
they are for the PMP 100 Series and PTP 100 Series radios.
In the 5.8 and 5.4-GHz band, DFS (Dynamic Frequency Selection) is provided for regulatory
compliant operation, and is activated (if required per regulatory rules) using the “Region Code”
feature. Two alternate frequencies can be configured to provide service in the unlikely case a
module detects radar and triggers DFS, the same as standard Canopy. “External Antenna Gain”
may need to be configured consistent with any antennas used, to avoid making the system overly
sensitive to radar detection. “Whitening,” a technique used to avoid self-interference on Canopy
FSK radios, is not offered as an option on the PMP 400/430 and PTP 200 Series radios, as
whitening is not a technology applicable to an OFDM signal.
2.4 POWER AND GROUNDING
PMP 58430 APs use a nominal 56 VDC power system with power on pins 5 and 8 and return on
pins 4 and 7. PMP 58430 APs must use a CMM4 with a 56 VDC power supply. A CMMmicro will
not power these units as it is providing the wrong voltage on the wrong pins. PMP 58430 SMs
use a 29.5 VDC wall mount power supply.
PMP 54400 APs and SMs and PTP 54200 BHs use a nominal 30 VDC power system with power
on pins 7 and 8 and return on pins 4 and 5. PMP 54400 APs and PTP 54200 BHs can be
powered from either a CMMmicro with a 30 VDC power supply or a CMM4 with a 30 VDC power
supply. A 29.5 VDC wall mount power supply is available for PMP 54400 SMs.
PMP 49400 APs and SMs and PTP 49200 BHs use a nominal 56 VDC power system with power
on pins 5 and 8 and return on pins 4 and 7. PMP 49400 APs and PTP 49200 BHs must use a
CMM4 with a 56 VDC power supply. A CMMmicro will not power these units as it is providing the
wrong voltage on the wrong pins. A 56 VDC power supply is available for PMP 49400 SMs.
IMPORTANT!
When working on sites with both power systems, use care not to wrongly
mix power supplies and radios as the two power systems use different
pinouts as well as different voltages.
On sites with a mix of 30 VDC and 56 VDC radios (up to the limit of 8 radios supported by one
CMM4), a CMM4 connected to both a 30 VDC power supply and a 56 VDC power supply can be
used.
Due to the full metallic connection to the tower or support structure through the AP’s antenna or a
connectorized BH’s antenna, grounding the AP or BH and installing a 600SS surge suppressor
within 3 ft (1 m) of the AP or BH is strongly recommended to suppress over voltages and over
currents, such as those caused by near-miss lightning. APs and BHs provide a grounding lug for
grounding to the tower or support structure.