Altimeter does not work

[LordOrion]

I've noticed this at release day but I tought it was due to an incorrect pressure setting: unfortunately I was worng.

Starting from the groound, the altimeter (both digital counter and pointer) is locked at -750ft and start to count up only when the plane fly above ~8k feet.

Going below that height, the altimeter locks again when reaching -750ft.

See the attached picture: there I was at ~7500 feet over Nellis.

Starting in the air, the problem does not seems to occur, although for the very first 2-3 seconds since the mission start the altimeter marks an altitude value which is 1000ft below the actual altitude, then it stabilize to the actual value.

[gulredrel]

10 hours ago, LordOrion said:

Starting from the groound, the altimeter (both digital counter and pointer) is locked at...

Haven't started in the air yet. But the altimeter on ramp initiates with some random values. So even the same mission with same set pressure value will result in spawning the plane with different pressure setting on the altimeter. You have to set QNH yourself.

From the manual p. 110:

Quote

Altimeter
The altimeter (Figure 58) provides indication of the aircraft altitude from -305 m (-1000 ft) to 15240 m (50000 ft) through a 3-digit counter and a pointer.
The instrument is connected to the static pressure system and is fitted with a vibrator which smoothes the pointer movement. A knob in the lower left corner of the instrument is used to set the reference level to zero when the ground barometric pressure is comprised between 950 and 1050 millibar.
The instrument located in the front cockpit also supplies an altitude coded signal for transmission to the ground through the IFF transponder. When the encoder is not supplied with power, a “CODEOFF” flag comes in view on the dial.

So from your picture, the pressure setting is 950 millibar, the min value on instrument. What's the QNH in the mission?

For air starts this may follow a different initialization.

[LordOrion]

Thank you @gulredrel, looks like I've messed up with QFE and QNH: once set pressure to 1013 millibar (rotating the knob took forever  ) on the ground, I get the altimeter mark ~1800ft, which is the correct value of the Nellis airstrip.

Yet, all other modules I own properly set thew pressure when starting hot or on the runway: the Macchino seems to doing it only when starting in the air. 

[gulredrel]

1 hour ago, LordOrion said:

Thank you @gulredrel, looks like I've messed up with QFE and QNH: once set pressure to 1013 millibar (rotating the knob took forever  ) on the ground, I get the altimeter mark ~1800ft, which is the correct value of the Nellis airstrip.

Yet, all other modules I own properly set thew pressure when starting hot or on the runway: the Macchino seems to doing it only when starting in the air. 

Glad it's solved. Click and drag works a bit faster on the knob in contrast to pure mouse wheel scrolling.

 

Hot start (ramp or RW) vs. cold start on ramp setting of altimeter could be a thing for @6S.Duke. Maybe the random value should only be initialized with a cold ramp start. For the hot starts it should be set to QNH, as this would be part of pre-taxi checklist, I guess?