Trimble Outdoors 58052-00 Benutzerhandbuch
Copernicus GPS Receiver 9 9
COPERNICUS REFERENCE BOARD 1 0
Reference Board Schematic
(page 1 of 3)
Note – Reference board schematics may differ from the recommendations outlined in
due to the test mode requirements for Trimble’s internal use.
PPS
PPS
BOO
T
Vmain
XRESET
MONIT
O
R
V
ant
VLED
GPIO_A5
LNA_XEN
XST
ANDBY
GPIO_A6
SHR
T
GPIO_A11
OPN
GPIO_B5
GPIO_A10
GPIO_A4
Minim
um length 50 ohm tr
ace
1:
TXDB 2:
3.3V
3:
TXD
A
4:
Vbac
k
5:
RXD
A
6:
PPS
7:
RXDB 8:
GND
NO
TE:
24 jumpers are
required to be included
on the BOM and in the
Assemb
ly Dr
a
wing.
*C1 and C4 are impedance matching components
,
v
alues depend on the PBC la
y
out.
Coper
nicus RF_IN is inter
nally DC-decoupled.
C4*
18pF
U1
Coper
nicus
U1
GND1
1
GND3
2
RF_IN
3
GND5
4
PPS
19
LNA_XEN
5
GPIO_A10
18
GPIO_A11
17
OPEN
7
MONIT
OR
9
SHOR
T
8
BOO
T
10
XRESET
11
GND25
14
VCC
12
TXD_B
24
GPIO_A5
22
TXD_A
23
RXD_A
21
GND24
13
GND26
15
GND27
27
GPIO_B5
6
GPIO_A6
26
GPIO_A4
25
XST
ANDBY
16
RXD_B
20
GND28
28
L1
100nH
MTG2
MTG3
8 pin 2mm
J7
1
3
5
7
2
4
6
8
C1
18pF
J8
PPS
1
2
J5
VCC
1
2
J6
Vbac
k
1
2
C3*
1pF
MTG1
MTG4
U2
BA
T54C
3
1
2
C2
0.1µF
J4
XRESET
1
2
RF MCX
J1
1
3
2
4
5