1
0
1
AsteRx4_OEM
10
2.2
Antenna Connectors
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)
The right-angle MMCX connectors are mounted on the bottom side of the board and
protrude 1.2mm beyond the edge of the PCB.
Never inject a DC voltage into the antenna connectors 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 (example of mating connector: TFM-140-12-L-D-A)
The applicable pin numbering is shown below. Pin#1 is closest to the notch. Note that
this pin numbering may not be the same as the one used by the connector vendor.
To avoid board damage, all input pins (type “I”) must be driven low or left fl
oating (source
impedance ≥10k
) when the receiver is in sleep or power-off mode, with the exception of
pins #8 (nPWR_TOGGLE), #10 (nRST_IN), #76 (RS232_RX1) and #80 (RS232_RX2).
Pin#1
Pin#2
Notch
