PMP 400/430 and PTP 200/230 Series
Motorola PMP Solutions User Guide Supplement
Issue 6.0 May 2011
Page 63 of 77
Figure 33: Dielectric Grease - Insert Ethernet Cable
The PMP 400 SM and PTP 200 BH have a ground/Protective Earth lug, just like the AP. Although
not as critical as in the case of the AP (where there is metal-to-metal connectivity through the
coax and antenna to ground), the lug can be used to ground the SM or BH for additional
protection. In addition, a 600SS can be used within 3 ft (1 m) of the SM or BH to provide
additional protection. Especially for a BH, or in cases where the SM is mounted high and is more
exposed, or in known difficult areas for lightning, consider using these two techniques to increase
the radio’s resistance to lightning.
In all cases where Ethernet cables penetrate a building, home, or telecommunications hut, mount
a properly-grounded 600SS outside at the point of Ethernet cable building entry to protect
persons and property in the building.
PMP 400/430 and PTP 200/230 Series modules do not display a jitter value. Use
Receive Power
Level
for aiming and then use Link Tests to confirm alignment.
The
Receive Power Level
is a relative, not absolute, value. The
Receive Power Level
on a
module is useful during installation to aid in aiming where relative values over a short period of
time are of interest. The displayed
Receive Power Level
is not designed to be highly accurate
over time. The displayed
Receive
Power
Level
will vary with board-level temperature and may
vary from module to module even if the actual received power is not varying. Know the limitations
and use caution and judgment for any other use of
Receive
Power
Level
. Caution is advised
when using
Receive Power Level for
monitoring a link over time, deciding if the link is within
operating margins, deciding if a link is serviceable (link tests give a much better indication), or
comparing the link to other links.
The alignment headset will play a tone that varies in pitch (received power level), but not volume
(jitter), since PMP 400/430 and PTP 200/230 Series m
odules don’t calculate a jitter.