3.8.15 External and on Board PCB GPS Antenna
The Open-Q™ 820 carrier board allows user the flexibility of using an external (via SMA connector) or an on
board PCB GPS antenna. Depending on which antenna is used, dip switch S10 needs to be configured (see
table below for details).
GPS Antenna Selection
On Board PCB Antenna
External Antenna (Passive Antenna Only)
If an external GPS antenna is preferred, Lantronix recommends the Laird Technologies hepta-band dipole
antenna (manufacture part number: MAF94300). It is important to note that GPS should be used or tested
near a window or a location where satellites are easily "seen" by the device.
3.8.16 Open-Q Display
The display output options for the Open-Q 820 Development Kit consists of:
•
An HDMI type A connector
•
A 100-pin display connector J2 that supports:
o
o
o
o
The Open-Q development platform can support the following display combinations:
MIPI DSI
Open-Q™ 820 Dev Kit User Guide
Figure 17 On Board PCB Antennas
Dual DSI DPHY 1.2 (up to 3840 x 2400 at 60 fps)
HDMI 2.0 (4K60) or 4K30 Miracast
Touch screen capacitive panels via I2C, SPI, and interrupts (up to two devices)
Backlight LED
Can support external backlight driver control and power
PMI8996 backlight driver supports four LED strings of up to 30mA each with
28V maximum boost voltage
1 x 4lane DSI0 + 1 x 4lane DSI1
1 x 8 lane combining DIS0 and DSI1 for up to 4K resolution
2 x 4-lane DSI DPHY 1.2 and HDMI (4K60) or 4K30 Miracast
ANT1
Dip Switch S10 (Position 8) Selection
Off Position
On Position
Open-Q™ 820 Development Kit
ANT2
36
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