User's Manual

P330 Data Sheet / User Guide 29
DRAFT
designers must add filtering to bring transmissions within legal limits. Furthermore, one of the high
band channels overlaps with 5.8 GHz making its use dependent on the absence of ubiquitous 1 watt,
5.8GHz WIFI. Also, the 900MHz bands offer little improvement over the 500MHz channels.
Therefore the P330 limits operation of the DW1000 chip to the 20 combinations shown in Table 4-1.
Table 4-1: DW1000 configurations supported by the P330.
These setting combinations are all in compliance with both the FCC and EU (ETSI) regulations. The
user has access to one additional DW1000 control and that is the transmit power. If the user accepts
the default P330 settings then the transmit power will be at or, slightly below, the regulatory limit.
The user also has the ability through the P330 API or GUI to set the transmit power up to 10db below
or above the regulatory limit. There are no issues with setting the transmit lower than the regulator
limit. Setting the transmit power to greater than the default value is useful in overcoming cable or
antenna losses and can be useful for development and evaluation purposes. However, using a higher
value (or using a different cabling or antenna combination) in a final product without recertification
for compliance with the regulations is expressly forbidden.
Of these, we have found that combinations highlighted in yellow are the most useful. They support
the largest number of communications channels and offer either the fastest ranging rate or the longest
operating range in both the high and low bands.
While Time Domain has found these 20 to be the most useful, we are open to increasing the number
of combinations supported if a compelling reason can be made for such additions.
4.8 Indicator Lights
The P330 is provided with eight indicator LEDs. See Figure 4-1 for exact locations. The following
is an explanation of the LED functions.
Ethernet LEDs (located on the back of the RJ45 connector)
Combinations RF Channel PRF Data Rate Preamb Length Preamble Code
1 2 (4.0/500MHz) 16 110 1024 3 or 4
2 2 16 850 256 3 or 4
3 2 16 850 512 3 or 4
4 2 16 850 1024 3 or 4
5 2 16 6.8 128 3 or 4
6 2 64 110 1024 9,10,11,12
7 2 64 850 256 9,10,11,12
8 2 64 850 512 9,10,11,12
9 2 64 850 1024 9,10,11,12
10 2 64 6.8 128 9,10,11,12
11 5 (6.5/500MHz) 16 110 1024 3 or 4
12 5 16 850 256 3 or 4
13 5 16 850 512 3 or 4
14 5 16 850 1024 3 or 4
15 5 16 6.8 128 3 or 4
16 5 64 110 1024 9,10,11,12
17 5 64 850 256 9,10,11,12
18 5 64 850 512 9,10,11,12
19 5 64 850 1024 9,10,11,12
20 5 64 6.8 128 9,10,11,12