MGL Avionics Blaze TP-4 User manual

Introduction
The TP-4 is a 3 1/8” (80mm) sunlight readable 4 channel universal analog input color displa instrument. Each channel
can be individuall programmed to displa either pressure, temperature, current or volts from a universal analog input that
can interface to man sensors such as oil temperature, coolant temperature, oil pressure, fuel pressure, manifold
pressure, boost pressure and man more.
The TP-4 can displa an combination of 1 to 4 analog channels in a horizontal / vertical bargraph or a numeric displa
format.
Pressure can be measured using standard automotive resistive senders (e.g. VDO 2, 5 and 10 Bar), Rotax 4-20mA
senders as well as voltage output pressure senders (e.g. UMA). Temperature can be measured using standard
automotive resistive senders (e.g. VDO, Westach) as well as the MGL Avionics precision LM335 semiconductor sensor.
In addition the temperature, pressure and current inputs can be programmed to a user defined curve for custom senders.
All analog channels have a programmable low and high alarm. This results in a contact closure that is t picall used to
switch a warning lamp on. The TP-4 also records the minimum and maximum values reached for each channel in
permanent memor .
The TP-4 can also be interfaced via the CAN bus to an external RDAC unit (Remote Data Acquisition Computer). This
allows for easier installation as the RDAC unit is normall mounted in the engine compartment.
Blaze TP-4
4 Channel Universal Analog input
(Pressure / Temperature / Current / Volts
indicator
Operating Manual – English 1.04

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1 Features
•Large 2.6” high resolution 320x240, IPS (fully viewa le in all directions), sunlight reada le color LCD
display
• Four universal analog inputs that can be used for pressure / temperature / current or volts
• Pressure can be measured using standard automotive resistive senders (e.g. VDO 2, 5 and 10Bar , Rotax
4-20mA senders as well as voltage output pressure senders (e.g. UMA
• Temperature can be measured using standard automotive resistive senders (e.g. VDO, Westach as well
as the MGL Avionics precision LM335 semiconductor sensor
• Current can be measured using the MGL Avionics Magnetic Closed Loop Current Sensor (Sold Separately
• High accuracy: Built in linearization curves for common senders
• Analog channels can be programmed to a user defined curve for custom senders
• Supports the Rotax 4-20mA pressure sender as used in the 912/914 engines
• Temperatures can be displayed in ºC or ºF
• Pressure can be displayed in psi or bar
• Records minimum and maximum values reached for each channel
• External RDAC (Remote Data Acquisition Computer interfacing via the CAN bus
• Includes a RS232 serial output for interfacing to external equipment e.g dataloggers etc.
• Standard 3 1/8” (80mm aircraft enclosure (can be front or rear mounted
• The LED backlight can automatically adjust to the ambient light, or it can be manually adjusted in the
menu system
• Rotary control plus 2 independent buttons for easy menu navigation and user input
• An external output activates when a high alarm condition has been reached
• Wide input supply voltage range of 8 to 30V DC with built in voltage reversal and over voltage protection
for harsh electrical environments
• 1 year limited warranty

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2 Layout
3 Main Displays
The TP-4 has 3 different main displa screens. The main displa screen can be selected b rotating the rotar control.
Horizontal Display Vertical Display
Numeric Display Max Values
F2 / Down Button:
Menu S stem: Softke button
Rotary Control (Up/Down & Enter Button:
Press the rotar control during the normal displa screens to access the menu s stem.
Rotate anti/clockwise for up/down menu scrolling. Rotate the rotar control during the
normal displa mode to change the main displa screen.
F1 / Up Button:
Menu S stem: Softke button
3 1/8” (80mm) enclosure.
Can be front or rear mounted
Ambient light sensor
Sunlight readable color graphic display:
The backlight can automaticall adjust
to the ambient light or it can be manuall
adjusted in the menu s stem

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3.1 Horizontal display
The below images show the horizontal displa mode displa ing 1,2,3 and 4 channels
3.2 Vertical display
The below images show the vertical displa mode displa ing 1,2,3 and 4 channels
3.3 Numeric display
The below images show the numeric displa mode displa ing 2,3 and 4 channels
3.4 Maximum Values display
This displa can be accessed b rotating the rotar control during the normal displa
mode. Press the F1/Up button when the max values displa is showing to reset the
maximum values.
Note: The maximum values are stored in non-volatile
memory and are recalled on power-up.

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4 Menu System
Press the rotar control button during the normal displa mode to enter the menu s stem. Use the rotar control to
navigate through the menu s stem.
4.1 Exiting the menu system
Press the F1/Up button to exit the menu s stem when the “EXIT” soft ke is shown. All changes made during navigation
of the menu s stem will be saved in non-volatile memor upon exiting. The instrument will not save an changes if ou
remove power before exiting the menu s stem.

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4.2 CH1 to CH4 Setup (Analog Channel Setup
The 4 analog channels are universal analog input channels that can be used for pressure, temperature, current or volts.
Only “CHANNEL 1” Setup is shown below, follow the same steps for Channel 2, 3 & 4
4.2.1 Pressure Setup
Mode:
Select the function for the analog channel. Options are “PRESSURE”, “TEMP”, “CURRENT”, “VOLTS” or “OFF”.
Type:
Select if ou are using a resistive, voltage or current pressure sender.
If the “RESISTIVE” pressure sender is selected
Sender:
Select what t pe of resistive pressure sender ou are using. Select “VDO” for VDO / resistive senders, “USER” for a
custom sender.

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Model:
Select which VDO pressure sender ou are using. A selection between a VDO 2, 5 or 10 Bar can be selected.
If the “VOLTAGE” pressure sender is selected
Sender:
Select the t pe of voltage sender ou are using. Select “UMA” for UMA senders, "0.5-4.5V" for voltage senders, or
“USER” for a custom voltage sender.
Model:
For UMA senders select the UMA model number.
If the “CURRENT” pressure sender is selected
Sender:
Select the t pe of current sender ou are using. Select “4-20mA” for Rotax 912/914 4-20mA sender or “USER” for a
custom 4-20mA sender.
Pressure @ 4 A:
Enter the pressure specified at 4mA output.
Pressure @ 20 A:
Enter the pressure specified at 20mA output.
Menu options for all sender types
If the “USER" pressure sender is selected
Calibrate Sender:
If the sender t pe is set to “USER”, then use this menu option to calibrate our pressure sender. See section 4.2.3 for
more information.
Label:
Enter a label to suit our pressure channel so ou can identif it easil .
Unit:
Select whether ou want to displa the pressure in Bar, psi or psi(0.1). The psi(0.1) is for low range pressure senders e.g.
UMA 7PSI.
Display Max:
Select the maximum pressure that ou want the bargraph to show. This can give ou increased displa resolution.
Display Max:
Select the minimum pressure that ou want the bargraph to show. This can give ou increased displa resolution.
High Alar :
This enables or disables the pressure high alarm.
High Alar :
Enter the pressure threshold for when the high alarm must be activated. An pressure above this value will activate the
alarm.

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High Caution:
Enter the pressure value for the high caution. This is the lower value of the upper ellow band.
Low Caution:
Enter the pressure value for the low caution. This is the upper value of the lower ellow band.
Low Alar :
This enables or disables the pressure low alarm.
Low Alar :
Enter the pressure threshold for when the low alarm must be activated. An pressure below this value will activate the
alarm.
Data:
Select the data source of the pressure signal. Options include internal (using one of the analog channels within the TP-4)
or from an optional external RDAC unit.
RDAC Address:
Select the CAN address of the RDAC unit.

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4.2.2 Temperature Setup
Mode:
Select the function for the analog channel. Options are “PRESSURE”, “TEMP”, “CURRENT”, “VOLTS” or “OFF”.
Sender:
Select what t pe of sender ou are using. Select “VDO 120” for a VDO 120 degree NTC sender, Select “VDO 150” for a
VDO 150 degree NTC sender, “WESTACH” for Westach 339 NTC sender, “MGL” for a MGL NTC sender, “LM335” for a
MGL precision temperature sender or “USER” for a custom sender.
If the sender type is set to “USER"
CALIBRATE SENDER:
If the sender t pe is set to “USER”, then use this menu option to calibrate our pressure sender. See section 4.2.3 for
more information.
If the sender type is set to “LM335"
LM335:
If the sender t pe is set to LM335, then use this menu option to calibrate our LM335 precision temperature sender. If
recalibration is required then adjust the value until the temperature matches the reference ambient temperature. Please
note that the LM335 can onl be calibrated in degrees Celsius irrespective if the TP-4 is setup to displa temperature in
Fahrenheit.
Menu options for all sender types
Label:
Enter a label to suit our temperature channel so ou can identif it easil .
Te p Unit:
Select whether ou want the temperature to be displa ed in degrees Celcius (ºC) or in degrees Fahrenheit (ºF).
Display Max:

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Select the maximum temperature that ou want the bargraph to show. This can give ou increased displa resolution.
Display Min:
Select the minimum temperature that ou want the bargraph to show. This can give ou increased displa resolution.
High Alar :
This enables or disables the temperature high alarm.
High Alar :
Enter the temperature threshold for when the high alarm must be activated. An temperature above this value will activate
the alarm.
High Caution:
Enter the temperature value for the high caution. This is the lower value of the upper ellow band.
Low Caution:
Enter the temperature value for the low caution. This is the upper value of the lower ellow band.
Low Alar :
This enables or disables the temperature low alarm.
Low Alar :
Enter the temperature threshold for when the low alarm must be activated. An temperature below this value will activate
the alarm.
Data:
Select the data source of the temperature signal. Options include internal (using one of the analog channels within the
TP-4) or from an optional external RDAC unit.
RDAC Address:
Select the CAN address of the RDAC unit.
4.2.3 Calibrating the user defined pressure,temperature and current
senders
1. Enter the number of points that ou want to calibrate.
2. Enter the displa reading that ou want to show when the sender is at that actual
displa reading.
3. Enter the ADC (analog to digital converter) reading that corresponds to this displa
reading. The ADC reading is shown at the top of the displa if ou are appl ing the
actual stimulus from the temperature, pressure or current sender. You can also
manuall enter this value if the ADC value is known or pre-calculated.
4. Continue entering displa and ADC values until all the points have been entered.
5. Verif the above calibration b checking the temperature, pressure or current displa
versus the actual applied sender stimulus.