User Manual

INSTALLATION AND MAINTENANCE MANUAL
LYNX.sc E1 FAMILY
SPREAD SPECTRUM RADIOS
OCTOBER 1998
PAGE 3-56 SECTION 3: INSTALLATION & ADJUSTMENTS
3.14.5 Protect Port Connection (Preliminary Information)
This feature is not yet available as of the publishing date of
this manual.
The protect port is an 8-pin modular jack connection which is used in conjunction with an auxiliary
piece of equipment called a LYNX.SC.mhs. The LYNX.sc protection port implements control
information for the purposes of Monitored Hot Standby (MHS) or Space Diversity (SD) radio
configurations. Purchase of the LYNX.SC.mhs equipment is required to implement this feature of
the LYNX.sc radio. Details of the specific connection requirements to this equipment are supplied
in the LYNX.SC.mhs manual.
MHS is a configuration of equipment which essentially supports a “back-up” radio, in case of radio
hardware failure. For the LYNX.sc this is accomplished by connecting the antenna and E1
connections to the LYNX.SC.mhs unit, and then connecting the LYNX.SC.mhs unit to two
separate and identical LYNX.sc radios. The LYNX.SC.mhs unit provides the capability to switch
between connected LYNX.sc radios in case of a radio hardware failure. There is an interruption in
radio traffic when this switching occurs, however, radios are typically able to resynchronize and
establish communications in a few seconds (depending on path length and path availability). A
typical MHS configuration is shown in Figure 3-29.
Figure 3-29: MHS Configuration