Campbell CR6 - Page 25

Table 2-4: Voltage output terminal functions
U1-U12 C1-C4 12V SW12-1 SW12-2 5V
3.3 VDC
ü ü
5 VDC
ü ü ü
12 VDC
ü ü ü
C and even numbered U terminals have limited drive capacity. Voltage levels are configured in pairs.
Table 2-5: Communications terminal functions
U1 U2 U3 U4 U5 U6 U7 U8 U9 U10 U11 U12 C1 C2 C3 C4
RS-
232/
CPI
SDI-12
ü ü ü ü ü ü ü ü
GPS
Time
Sync
PPS Rx Tx Rx Tx Rx
TTL
0-5 V
Tx Rx Tx Rx Tx Rx Tx Rx Tx Rx Tx Rx Tx Rx Tx Rx
LVTTL
0-3.3 V
Tx Rx Tx Rx Tx Rx Tx Rx Tx Rx Tx Rx Tx Rx Tx Rx
RS-232 Tx Rx Tx Rx
ü
RS-485
(Half
Duplex)
A- B+ A- B+
RS-485
(Full
Duplex)
Tx- Tx+ Rx- Rx+
I2C SCL SDA SCL SDA SCL SDA SCL SDA SCL SDA SCL SDA SCL SDA SCL SDA
SPI MOSI SCLK MISO MOSI SCLK MISO MOSI SCLK MISO MOSI SCLK MISO
SDM Data Clk Enabl Data Clk Enabl Data Clk Enabl Data Clk Enabl
CPI/
CDM
ü
2. Wiring panel and terminal functions 7