Trimble Outdoors 58052-00 Benutzerhandbuch
Copernicus GPS Receiver 1 0 1
COPERNICUS REFERENCE BOARD 1 0
Reference Board Schematic
(page 3 of 3)
Figure 10.3
Copernicus Reference Board Schematic (Page 3)
BOO
T
MONIT
O
R
XRESET
Vmain
LNA_XEN
V
ant
SHR
T
OPN
XST
ANDBY
Vmain
Vmain
State OPN SHR
T
OPEN 1 1
SHOR
T 0 0
OK 0 1
Undefined 1 0
MMBT
A
70L
T
1 tr
ansistor ma
y
be used f
o
r Q8 if 12-v
olt
bac
k v
o
ltage toler
ance is
not required.
Lo
w to reset
Lo
w to FLASH
High to R
U
N
Must be
pulled high
to r
un (R25)
OPEN = FLASH
Lo
w to star
t
in MONIT
O
R
High f
o
r
NORMAL star
t
OPEN =
NORMAL star
t
High to R
U
N
Lo
w to f
orce
to ST
ANDBY
OPEN = R
U
N
NO
TE:
OPEN and SHOR
T
signal logic is not v
a
lid
(indicates antenna shor
t)
when Antenna P
o
w
er jumper
is remo
ved or LNA_XEN is
high.
BOO
T
J25
1
2
J27
MONIT
OR
1
2
J24
A
ux Cntl
1
2
3
SW1
RESET_SW
1
2
J26
Antenna P
o
w
e
r
1
2
D7
MMBD914
1
3
2
R26
Q8
MMBT404A
1
2
3
R34
R28
Q7A
FDG6316P
1
2
6
Q10
MMBT3906
1
2
3
Q7B
FDG6316P
4
5
3
Q11
MMBT3906
1
2
3
R30
J28
3-pin header
1
2
3
R25
Q9
MMBT3904
1
2
3
J23
A
ux P
o
w
e
r
1
2
R33
R32
R31
R29
J22
A
ux Output
1
2
R27