Advertisement
POWER
12.
Power Switch.
ROTOR
13.
DB15 female for connection with Antenna Rotator.
See "Connecting Hardware" chapters for details.
PORT B
14.
DB25 female for antenna switch, BPF and/or sequencer connection.
See "Connecting Hardware" chapters for details.
PTTIN
15.
input for PTT output from transceiver or PAPTT from microHAM "keyer".
Active when grounded.
RCA jack: Tip – signal, Shell – ground.
uLINK
16.
uLINK network connection.
DB9 female jack.
See "Connecting Hardware" chapters for details.
uLINK Modules are micro-controller based remote boxes used for control and interface of "shared" devices.
"Shared" devices are all devices included in the station setup which have to be available to and controlled by
more than one station (SMD). Such shared devices are antenna switches, stack switches, four square
controllers, rotator controllers, tuners, serial port wattmeters, matching networks, power amplifiers etc ...
microHAM provides several modules with different control interfaces and functions to control a variety of shared
devices.
uLINK HUB
functionality even when some stations are turned off. The power pairs are connected in parallel to decrease
resistance. There is a dedicated LED on the front panel of SMD, indicating that the uLINK bus is powered.
uLINK RELAY6
microHAM © 2016 All rights reserved
uLINK MODULES
The uLINK HUB serves as a concentrator and isolated power source of SMD
controllers connected to the uLINK bus. Up to four SMDs can be connected to
one uLINK HUB. uLINK HUB is a basic element of the uLINK network, every
setup must contain at least one.
Each SMD is connected to the uLINK HUB by single CAT5/6 cable but the
connection uses two wire pairs - one incoming, one outgoing - to maintain the
daisy-chain topology. The third and fourth pairs are used for feeding isolated
power from uLINK HUB to uLINK circuits in the SMD to keep uLINK bus isolated
from all other circuits, minimize interference, maximize immunity and keep bus
uLINK RELAY 6 and uLINK RELAY 10 are the most used uLINK network module – they
provide relay contact outputs for device control. The relay modules are used for any
device requiring simple control – switch input to ground, connect to power or connect two
input ports together. uLINK RELAY6 has six (6) isolated SPST contacts located at top
terminal. Each contact is rated 3A @ 125VAC or 30VDC.
This module could be used for interfacing devices with few control lines; AC/DC
controlled devices (like a K9AY controller or Ameritron RCS-4), making AND or OR logic
condition; whenever access to both terminals of the contact are necessary; and when
connection to a common positive or common ground is not an option.
9
Advertisement
