30.1 RELAY CONNECTION
The maximum current supported by the relays (switching current) is 1A, while the maximum voltage is 30 V. The
individual relays are assigned by the software
The dc voltage is 9 volts, non-stablised. The relative output is protected by a 300 mA self-resetting fuse. The connector
features markings showing the COMMON, NORMALLY CLOSED and NORMALLY OPEN contacts for four SPDT relays.
Relay 4 can also be used as an indicator of the
presence of the 5 volts DC internal power supply
branch.
An internal jumper (J1) allows you to assign the
relay to normal GPO reporting or to detection of
the presence of power (PWR position: . the relay
remains closed as long as the power supply is
present, therefore the opening of the relay
indicates an irregularity in the power supply )
30.2 MPX CONNECTORS
The MPX-1 and MPX-2 connectors are used for connection to composite signals with a bandwidth of up to 59 KHz on
which to perform the measurements.
These are usually connected to the Stereo Encoder outputs.
The EXT MPX output is dedicated to the connection of an external tuner MPX output, to use as an alternative to the Wolf
device‟s internal tuner.
Input impedance: 50 Ohm.
Please refer to the section on Manual/Auto operating modes with regards to the selection of the input used for the
measurements.
The Antenna connector is dedicated to the connection to the antenna for the built-in tuner.
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