INSTALLATION AND MAINTENANCE MANUAL
LYNX E1 FAMILY
LICENSED & SPREAD SPECTRUM RADIOS
JUNE 2001
PAGE 3-44 SECTION 3: INSTALLATION & ADJUSTMENTS
3.7.1 DC Power Wiring
Connect the power cable with adequate current rating (minimum of 20 AWG) to the terminals shown
on the removed (not plugged into the radio) DC power plug using the screw connections. The
recommended minimum current rating of external fuses and cables is 3 Amps. The Lynx radios
consume less than 1 Amp at ±48V and less than 2 Amps at ±24V. Be sure the DC power cable is
less than 3 meters (9.75 feet) in length.
Each Lynx terminal should be externally fused separately with a
5 Amp maximum fuse. The DC power cable must be less than
three (3) meters in length.
If using negative power, connect the negative voltage to pins 1 or 6. Connect the ground return
connection to pins 3 or 4. See Figure 3-7.
If using positive power, connect the positive voltage to pins 3 or 4. Connect the ground return
connection to pins 1 or 6. See Figure 3-8.
The ground connection is available at pins 2 and 5. Either pin may be used to ground the return
side of the power supply. Do not ground both sides of the power supply.
Proper grounding, either through the chassis and/or the power
supply, can be very important for protection from lightning. A
grounding screw hole is provided on the rear panel.
The ground connection may be left floating if the power supply is
referenced to ground externally and to avoid ground loops in
some configurations. However, this may not provide adequate
grounding for lightning protection.
Use a DVM (digital voltmeter) to verify voltage and polarity on the DC power plug.
Do not connect the DC power plug to the rear of the Lynx terminal
until a load is connected to the antenna port (either an RF pad, or
an RF cable and antenna).
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