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RoyalTek meb-1000 User Manual

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12
 
MEB-1000 User Manual 
14 N.C 
 
 
 
15 GND 
G Ground 
Reference 
Ground 
16 GND 
G Ground 
Reference 
Ground 
17 GPS_RF_IN  I GPS 
Signal 
input 50 
Ω @1.57542GHz 
18 GND 
G Ground 
Reference 
Ground 
19 V_ANT_IN 
I Active 
Antenna 
Bias voltage 
Receiving DC power supply for active 
antenna bias. 
20 VCC_RF_OUT
O Supply 
Antenna 
Bias voltage 
%
5
85
.
2
±
=
V
V
O
   
Current<35mA 
21 V_RTC_3V3  I Backup 
voltage 
supply 
10uA
Current
 
3.6V
~
1.6
 
DC
≤
+
+
 
22 Reset 
I Reset 
(Active 
low) 
V
V
V
V
V
IL
IH
8
.
0
0.3V
-
         
2
6
.
3
≤
≤
≥
≥
23 N.C 
  
 
24 N.C 
  
 
25 GPIO4 
I/O 
General 
purpose 
I/O 
V
V
V
V
V
IL
IH
8
.
0
0.3V
-
         
2
6
.
3
≤
≤
≥
≥
V
V
V
V
V
OL
OH
4
.
0
0.3V
-
  
4
.
2
15
.
3
≤
≤
≥
≥
26 GPIO0 
I/O 
General 
purpose 
I/O 
V
V
V
V
V
IL
IH
8
.
0
0.3V
-
         
2
6
.
3
≤
≤
≥
≥
V
V
V
V
V
OL
OH
4
.
0
0.3V
-
  
4
.
2
15
.
3
≤
≤
≥
≥
27 N.C 
  
 
28 N.C 
  
 
29 
PPS 
O 
One pulse per 
second 
V
V
V
V
V
OL
OH
4
.
0
0.3V
-
  
4
.
2
15
.
3
≤
≤
≥
≥
30 GND 
G Ground 
Reference 
Ground 
31 N.C 
 
 
 
 
 
V_GPS_3V3(+3.3V DC power Input) 
This is the DC power supply input pin for GPS system. It provides voltage 
to module. 
GND 
GND provides the ground .   
RXA 
This is the main receiver channel and is used to receive software 
commands to the board from PowerGPS software or from user written