GAUGE: B737 Air Systems
Gauge v2.0.002 - Current Version 16th Feb 2024

Features:

This gauge is for MSFS 2020 PMDG 737 only

1) Two pages for setting all Air Systems

2) Can display each page on a different FIP

3) Set Left & Right Pack Switches

4) Set Left & Right Engine Bleed Switches

5) Set APU Bleed Switch

6) Set Isolation Valve Switch

7) Duct Pressure Gauge

8) Push Button for Trip Reset

9) Push Button for Overhead Heat Test

10) Left & Right Recirc Fan Switches

11) Brightness control (Physical FIP)

12) Optional Glass Reflections

Used to assist in starting engines also, saves messing around with 3d cockpit overhead views while setting the bleed switches.

Aircraft Compatibility:
Simulator: Not Compatible
3rd Party: Fully Compatible
*ONLY for MSFS PMDG 737

Buttons & Dials Summary:

[S1] Mini Menu:

[S2] Over Head Light Test Switch:

[S3] Toggle Highlight Colour:

[S6] Menu Virtual Power Toggle:

[L Dial] Set Selected Function On/Off:

[R Dial] Select previous/next function:

About B737 Air Systems:

This gauge is for the PMDG 737 only and emulates the PMDG 737 Air Systems Panel on the overhead.

The Main Gauge:

2 page gauge that can be loaded on two FIP's and have separate displays

Buttons & Dials Details:

[S1] Mini Menu:

This is used to activate/deactivate the Mini Menu as the [R Dai] is used for gauge functions

[S2] Activate PMDG Mode:

This is used to toggle the aircraft compatibility mode to "PMDG 737" i.e. FG_GLOBAL_AIRCRAFT = "2"

[S3] Over Head Light Test Switch:

This toggles the Over Head Light Test feature [PMDG737:1000:013C] on and off in the aircraft.

[L Dial] Set Selected Function On/Off:

[R Dial] Select previous/next function:

The Mini Menu:

Version & Info:

Turn left dial clockwise to turn on and counter clockwise to turn off current version number and other useful links.

Aircraft Compatibility Mode:

Switch between SIM and PMDG737 compatibility.

OVH Light Test:

This toggles the Over Head Light Test feature [PMDG737:1000:013C] on and off in the aircraft.

Brightness:

Turn left Dial clockwise to increase gauge brightness and counter clockwise to decrease gauge brightness. This will adjust the brightness of all gauges at the same time.

Variables:

FG_B737_AIR_SYSTEMS_MENU (Session)

Menu Item Index (0 to 7)

0 = Menu Closed

1 = Version & Info

2 = Highlight Colour

3 = Highlight Timeout

4 = Captain Light Test

5 = Glass Reflections

6 = Brightness Control

7 = Panel Lights

FG_B737_AIR_SYSTEMS_MENU_ACTIVE (Session)

If Menu Preview Mode is Active (Off = 0, On = 1)

FG_B737_AIR_SYSTEMS_SELECTED (Device)

Selected Control index number (-2 to 7)

-2 = Left Fan

-1 = Right Fan

0 = Overhead Test Button

1 = Left Pack

2 = Isolation Valve

3 = Right Pack

4 = Trip Reset

5 = Bleed Switch 1

6 = APU Bleed

7 = Bleed Switch 2

FG_B737_AIR_SYSTEMS_SELECTED_COLOUR (Profile)

Control selection highlight Colour Index (0 to 4)

0 = Blue

1 = Yellow

2 = Red

3 = Green

4 = White

FG_B737_AIR_SYSTEMS_HIGHLIGHT_SHOW (Session)

Internal var Highlight Display Status (Off = 0, On = 1)

FG_B737_AIR_SYSTEMS_HIGHLIGHT_OFF (Session)

Internal var to measure highlight off time - do not edit

FG_B737_AIR_SYSTEMS_HIGHLIGHT_TIMER (Profile)

Hightlight Timout in Seconds (0 to 60)

SIMCONNECT Vars Used:

N/A

PMDG Vars Used:

PMDGNG3:0000:00BB (Left Fan)

PMDGNG3:0000:00BC (Right Fan)

PMDGNG3:0000:00BD (Left Pack)

PMDGNG3:0000:00C2 (Isolation Valve)

PMDGNG3:0000:00BE (Right Pack)

PMDGNG3:0000:00BF (Bleed Switch 1)

PMDGNG3:0000:00C1 (APU Bleed)

PMDGNG3:0000:00C0 (Bleed (Switch 2)

PMDGNG3:0000:01C4 (Duck Pressure Right)

PMDGNG3:0000:01C0 (Duck Pressure Left)

fipgauges.com GLOBAL VARIABLES:

(not all vars used in every gauge)

FG_GLOBAL_DIAL_SPEED (Session)

Variable used for dial acceleration (Off = 0, On = 1)

FG_GLOBAL_GAUGE_BRIGHTNESS (Profile)

Brightness value of physical FIP's. Affects all physical gauges (20-250)

FG_GLOBAL_GAUGE_BRIGHTNESS_MODE (Profile)

Variable used when editing Global or individual Brightness (0-1)

0 - Global Brightness

1 - Inedividual Brightness

FG_GLOBAL_GLASS (Profile)

Glass Reflection (Off = 0, On = 1)

FG_GLOBAL_HIDE_MENU_LED (Profile)

Toggle visibility of Mini Menu LED (0 = On, 1 = Off)

FG_GLOBAL_JET_COLOUR (Profile)

Background Colour (0 to 3)

1 = Grey panel with grey gauge face

2 = Blue grey panel with grey gauge face

3 = Dark grey panel with black gauge face

4 = Dark blue panel with black gauge face.

FG_GLOBAL_JET_BACKGROUND_COLOUR (Profile)

Background Colour (Black = 0, Blue = 1 )

FG_GLOBAL_MIN_VOLTAGE (Profile)

Minimum voltage before gauge electronics turns off (-1 to 150)

-1 = Disabled

0 - 150 = Off Voltage Level

FG_GLOBAL_MIN_VOLTAGE_CACHE (Profile)

Internal Variable - Used to store off voltage value - do not edit

FG_GLOBAL_PANEL_LIGHTS (Profile)

Night Lit Mode (Off = 0, On = 1)

FG_GLOBAL_PRESSURE (Profile)

Shared variable for switching inHg and MB (0 to 1)

0 = inHg

1 = Millbars

FG_GLOBAL_STYLE (Profile)

Background Colour (0 to 6)

0 = Grey

1 = Black Dial Face

2 = Darker Gauge & Dial Face

3 = Black & No Gauge GFX

4 = Grey - Original Design

5 = Black Dial Face - Original Design

6 = Darker Gauge & Dial Face - Original Design

FG_GLOBAL_VOLTAGE (Session)

Internal variable used to read current voltage

Release Notes:

2.0.002

- 1) SPAD.neXt 0.9.15 Compatibility (Convert "PRESS" to "PRESSSHORT") Fixes short and long press both firing on long press.

- 2) New gauge brightness code using SPAD brightness variables.

- 3) Can control global or individual gauge brightness in gauge (Profile saved settings)

- 4) Better use of button lights

2.0.001 - SPAD.neXt 0.9.13 Compatibility (Author ID)

2.0.000 - First release of Version 2 for MSFS PMDG

Please report any bugs or feature requests via our discord channel

Document Published 16/02/2024