VX150 TO VX2 INSTALLATION MANUAL CONTROL AND MONITOR WIRING
PAGE 1.8.2 VERSION 0.3 2021-01-14
Remote Inputs
You can connect up to seven (7) remote inputs to the REMOTE I/O-A, 9-pin female D-sub connector on
the rear panel of the transmitter (see Figure 1.7.1: on page 1.7.5), which allow you to remotely control
various operational characteristics of the transmitter. Each input is mapped to a control that is preset at
Nautel, that is not user-configurable.
See Table 1.8.1 on page 1.8.3 for a list of the preset inputs, their default functional descriptions and
their associated pins on the REMOTE I/O-A, 9-pin female D-sub connector.
Refer to the
VX Operations and Maintenance Manual
for instructions on changing the remote input
settings.
Unless otherwise noted these inputs are only accepted by the transmitter if remote control is enabled.
That setting can only be made by a local user using the front panel UI or remote AUI. All inputs are
active when a ground (0 V) is applied, if configured as such.
The external remote input circuits interface with the transmitter via the REMOTE I/O-A 9-pin female D-
sub connector and then with internal opto-couplers. The opto-couplers buffer and isolate the external
circuits and prevent any unwanted transients from affecting the transmitter.
Remote Input Connections
Remote inputs 1 through 7, as required, connect to the pins of REMOTE I/O-A 9-pin female D-sub
connector on the rear of the transmitter. See Table 1.8.1 on page 1.8.3 to determine the input pin
associated with each remote input, the default remote inputs and their functions.
Nautel provides a D-sub mating connector (Nautel Part # JS224) and connector shell (Nautel Part #
JS225) in the ancillary kit to facilitate customer connections to the controller, as applicable.
When the remote input is configured for logic ‘0’, a negative logic (current-sink-to-ground) command
must be applied to the appropriate remote input (1 through 7). To avoid a ground loop, obtain the
ground from pin 7).
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