Barometric Pressure Meter - Standard Horizon HX460S Owner's Manual

4.16 BAROMETRIC PRESSURE METER

The optional Barometric Pressure unit (SU-1) brings to the HX460S the unique
capability of providing readout of the current barometric pressure. The SU-1
unit requires calibration of the 'offset' parameters, so that the pressure reading
will be correct. To do this you must have a barometer to use as a reference as
you adjust the SU-1 to match its reading; see section 4.17.6 boF (Barometric
Pressure Offset). The SU-1 Barometric Pressure Unit can be installed in the
transceiver by referring to the following illustration:
SU-1 Operation
1. Set the SQUELCH CONTROL knob to the "Squelch Threshold" point.
2. Hold down the H/L key for at least 1 second; this initiates measurement
of the current Barometric Pressure.
3. After few seconds, the current Barometric Pressure (in mm of Hg) will
appear on the display.
4. To return to normal operation, again hold down the H/L key until the
HX460 shows the last selected working channel; alternatively, turn the
squelch counter-clockwise until noise is heard. The display will revert to
the last channel selected. Return the squelch control to the "threshold"
position to resume normal operation.
1. Make sure that the transceiver is off. Remove the hard or soft case, if
used. Remove the battery pack.
2. Locate the connector for the SU-1 under the caution seal in the battery
compartment on the back of the radio, just peel off the caution seal.
3. Align the connector on the SU-1 with the transceiver's connector
and gently press the unit into place.
4. Affix the new (supplied with the SU-1) caution seal, and replace the
battery. Installation is now complete.
HX460S
Installation of the SU-1
Figure 5
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