- 3 -
Theory of Operation
The
RR8B-HP
uses a star arrangement of 16 relays to select one or more of eight output ports when voltage
is applied from an 8-wire control line. The 16 relays provide greatly improved power handling and SWR
over conventional switches and allows port-to-port connections between any of the eight output ports.
Installation
1. Secure the switching unit using the included
DXE-SSVC-2P
V Saddle Clamp.
For outdoor installations or in moist environments, connectors must face
downward.
2. Fasten all cables to the mounting mast or tower to relieve strain, and gently droop
the cables to form a drip loop (do not use tight bends with coaxial cable). Install
the
RR8B-HP
with the connectors facing down and use gradual bends or loops in
heavy wires. If the
RR8B-HP
is mounted to a wooden pole or building, a wide
copper flashing or heavy wire or strap should be connected from the mounting
bracket to a good ground.
Caution:
Never switch antennas while transmitting. Hot switching with power will create a sustained
arc that damages relay contacts.
When switching ports, allow 15 ms before transmitting to avoid
damaging the switch. This type of damage is NOT covered under warranty.
3. Wire the plug making a note of wire colors at each pin. Write them in
the
Connector Wire Reference Table
below. Either "G" is ground. We
recommend following standard resistor color codes, using ascending
order by color. The color code is black 0, brown 1, red 2, orange 3,
yellow 4, green 5, blue 6, violet 7, gray 8, and white 9.
The green connector is in two parts and the top part can be removed by pulling it straight off. This will
allow easier wire replacement or servicing as needed. When pushing the connector back in place, ensure
you press straight inward.
DXE-CW9
Shielded CAT5 cable can be used. The shield is used as the signal ground return. Adhering
to a logical standard allows people unfamiliar with a system to troubleshoot with minimal difficulty.
For
DXE-CW9
shielded CAT5 cable we suggest working your way up through the pairs by ascending
color: brown, brown/white, orange, orange/white, green, green/white, blue, and blue/white.
Connector Wire Reference Table
G
1
2
3
4
5
6
7
8
G
The ground wire can be omitted if the
DXE-EC-8
control console or the
DXE-CC-8A
control console or
other switching voltage source is grounded to the feedline. The feedline shield and equipment grounds
provide the ground path.
Note: The
total loop resistance of the control cable path must be under 30
ohms for reliable operation.
.
