User's Manual

5. Installing the Remote Link
EAC-2100 Manual: (Draft, 02/01) Page 6-7
DISTANCE FROM DONOR CELL (Control Channels Menu)
This parameter is needed for DTC operation to establish the timing advance of the
reverse transmissions. The allowable range is 0 to 96 kilometers. This value must be set
accurately for proper DTC operation.
MOBILE DYNAMIC POWER CONTROL THRESHOLD – DTC (Thresholds
and Power Control Menu)
Default: -60 dBm, Range: -40 to –120 dBm
This sets the RSSI level as measured at the EAC from the subscriber that will cause the
EAC to reduce the power level of the subscriber when operating on an EAC DTC. If a
portable operating at reduced power subsequently moves away from the EAC, its
power will be increased again before it is handed back to the donor. It is recommended
that the
“MOBILE DYNAMIC POWER CONTROL THRESHOLD – DTC”
be set no lower than –75 dBm to avoid excessive power control adjustments.
HANDIN- THESHOLD –DTC – MINIMUM IMPROVEMENT – (Thresholds and
Power Control Menu)
Default: 5 dB, Range: 0 (disabled) 1 -120 dB
This parameter sets the level of improvement that the EAC calculates will occur before
doing a hand-in attempt on a call that is currently operating on one of the donor DTC
channels. A complete discussion of hand-in and hand-back for DTC is given above.
HANDIN- THESHOLD –DTC – LOAD SHED LEVEL – (Thresholds and Power
Control Menu)
Default: -100 dBm, Range: 0 (disabled) -40 to -120 dBm
This parameter sets the level of the RSSI at a subscriber unit from the donor that will
trigger a hand-in attempt by the EAC. That is, the subscriber unit must see this signal
or weaker from the donor before the EAC will attempt to take over the call. See above
for a complete discussion of hand- in and hand-back for DTC.
NOTE: the Hand-in Load Shed level must be 5 to 10 dB weaker than the
hand-back Load Shed level to prevent hand-in / hand-back ping-pong.
Hysteresis due to the “minimum improvement” criteria will not by
itself prevent ping-pong.