User's Manual

Page 4–24
18 September 2007
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
eNfusion™ HSD-128 High-speed Data Terminal
24 Receiver Calibration
(AERO)
• Enables attenuation of receive RF input level
to the channel cards
• Entered as an absolute number, e.g., 10,
means 10 dB of input RF attenuation is added
• Not applicable to HSD systems with
version C30 (or later) channel card
software
(Version C30 and later channel
card software automatically adjusts RF input)
• Default is “0”
28 RX32 Active • Not applicable (applied to prototype HPA
systems)
29 Default Latitude • Allows user to enter a default latitude value
• Reset the HSD to activate revised default
values
30 Default Longitude • Allows user to enter a default longitude value
• Reset the HSD to activate revised default
values
31 Obey OXCO status • Prevents system operation until OCXO is
warmed up (unless overridden)
• Use parameter setting to override warm-up
during testing procedures
42 HCM AERO/M4
prioritization
• Sets HPA power allocation to Aero H/H+ or
Swift64 call priority (1=M4, 0=AERO-H)
• Default set to AERO priority
45 Category B lower
frequency limit
• Used to specify category B terminal lower
frequency range. Calls transmitting outside of
this specified range may interfere with the
GPS navigational system if an Aero H call
occurs simultaneously; however, in this
event, the GPS protection algorithm usually
tears down the call
46 Category B upper
frequency limit
• Used to specify category B terminal upper
frequency range. Calls transmitting outside of
this specified range may interfere with the
GPS navigational system if an Aero H call
occurs simultaneously; however, in this
event, the GPS protection algorithm usually
tears down the call
Table 4–11. Menu 3, Item 'M' EEPROM Parameter Descriptions (Version 7.0)
Parameter
#
Parameter Title Description