_______________________________________________________________________ 2 AsteRx3_OEM
AsteRx3 Product Family Hardware Manual v2.5.0
15
Bottom view
Pin#1 of the 80-pin connector is at the bottom left (marked by the light-gray circle) in the above
drawing. Pin#2 is at the bottom right.
The right-angle MMCX connector is mounted on the bottom side of the board and protrudes 1.2mm
beyond the edge of the PCB.
2.2
Antenna Connector
Type:
MMCX, right angle
DC voltage:
As provided by pin#14 of the 80-pin connector
Gain range:
15 dB to 50 dB (antenna gain minus cable losses)
Never inject a DC voltage into the antenna connector as it may damage the receiver. For instance,
when using a splitter to distribute the antenna signal to several receivers, make sure that no more than
one output of the splitter passes DC. Use DC-blocks otherwise.
2.3
80-pin Connector
Connector type: SFM-140-02-SM-D
Conventions:
Pin Type: I=Input, O=Output, P=Power line, LVTTL=3V3 Low Voltage TTL.
LVTTL means VI
L
≤ 0.8V, VI
H
≥ 2.0V, VO
L
≤ 0.4V, VO
H
≥ 2.4V.
MMCX
