SGD 28-M Lascar Electronics, SGD 28-M Datasheet - Page 2

• Manufacturer Part Number: SGD 28-M
• Description: Electronic, Configurable, Graphic TFT, 2.8 Inch, Analog Multi-Function, 4-30VDC
• Manufacturer: Lascar Electronics
• Type: Programmabler

Specifications of SGD 28-M

• Brand/series: Panel Pilot
• Digit Height: 2.4
• Display Digit Height: 2.8 Inch
• Display Type: TFT Graphic
• Meter Type: Analog, Multi-function
• Number Of Digits: Configurable
• Primary Type: Electronic
• Signal, Input: Analog
• Special Features: Programmable Function/Display
• Termination: Screw
• Voltage, Supply: 4 to 30 VDC

SGD 28-M
PanelPilot Compatible Smart Graphics Display
Typical Supply Current
Voltage Input
The SGD 28-M features 2 voltage inputs, which use a Programmable Gain Amplifier (PGA) to make the best use of available resolution (the
smallest voltage range offers the highest resolution). Each channel can be programmed independently, with the option of eight different
input voltage ranges:
Note: V+, IN1 and IN2 share a common ground (i.e. not floating or isolated from each other).
Specifications liable to change without prior warning
HARDWARE
Screw Terminal Functions
1 IN2 Analogue voltage input 2 (maximum of 40V d.c.)
2 IN1 Analogue voltage input 1 (maximum of 40V d.c.)
3 0V 0V power supply input
4 V+ Positive power supply input (4V – 30V d.c.)
USB connection
with an additional 5 seconds needed for the hardware to reset.
The SGD 28-M can be powered directly from USB and is compatible with both USB 1.1 and USB 2.0. The screw terminals and advanced con-
nector can remain connected whilst using USB, but it is not necessary for V+ to be powered.
A ‘Type A to Mini-B’ USB cable is required to program and customise the SGD 28-M. It typically takes 10 seconds to send a configuration,
200
100
Voltage Range (V)
0
4
0 - 1.25
0 - 2.5
0 - 40
0 - 10
0 - 20
0 - 4
0 - 5
0 - 8
Voltage (V)
17
Resolution (mV)
0.3
0.6
1.0
1.2
2.0
2.4
4.9
9.8
30
Issue 3 02/2011 S.L Applies to SGD 28-M
www.lascarelectronics.com
The input voltage range is decided using the two voltages that the user enters in the
scaling section of the Panel Pilot software. The software uses the smallest range
available, which can accommodate both of the voltages entered by the user. The
absolute maximum voltage input is 40V d.c.
For example:
Entering a voltage scale of 0 – 30V in the software will use the 0 – 40V range.
Entering a voltage scale of 0 – 3V in the software will use the 0 – 4V range.
Entering a voltage scale of 5 – 15V in the software will use the 0 – 20V range.
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