Specifications
 INSTALLATION 
3.3.4.4  COM Interface Connector (J3) – Pocket PC external connection 
The COM Interface connector has a shell size of 10, 13 contacts. Each pin will accept a wire 
size of 28, 26, or 24 AWG. Connector and 3’ pigtail by Rosemount. 
SIGNAL NAME  DEFINITION  PIN 
DCD (pin 1) 
Data Carrier Detect Input, RS232 
1 
DSR (pin 6) 
Data Set Ready Input, RS232 
2 
RxD (pin 2) 
Receive Data Input, RS232 
3 
RTS (pin 7) 
Request to Send Output, RS232 
4 
TxD (pin 3) 
Transmit Data Output, RS232 
5 
CTS (pin 8) 
Clear To Send Input, RS232 
6 
DTR (pin 4) 
Data Terminal Ready Output, RS232 
7 
RI (pin 9) 
Ring Indicator Input, RS232 
8 
GND (pin 5)  Signal Ground, RS232  9 
TxD/RxD+ (pin 2) 
RS-485 Bidirectional Data 
10 
TxD/RxD- (pin 7) 
RS-485 Bidirectional Data 
11 
GND (pin 3) 
Signal Ground 
12 
VCC 
+5V DC 
13 
Table 3-3. COM Interface Terminal Assignments 
3.3.4.5  Lan Interface Connector (J4) – Customer PC, network or laptop connection 
The Lan Interface connector has a shell size of 8, 6 contacts. Each pin will accept a wire size 
of 28, 26, 24, or 22 AWG. 
SIGNAL NAME  DEFINITION  PIN 
TxD+ (pin 1)  1 
TxD- (pin 2) 
Transmit Data 
2 
RxD+ (pin 3)  3 
RxD- (Pin 6) 
Receive Data 
4 
Not Used 
5-6 
Table 3-4. LAN Interface Terminal Assignments 
3.3.4.6  CPU I/O Interface Connector (J2) – Rosemount Factory trained port for 
communication with CPU hard drive 
The CPU I/O Interface connector has a shell size of 14, 19 contacts. Each pin will accept a 
wire size of 28, 26, or 24 AWG. 
PIN NAME  DESCRIPTION 
A RED  RED CENTER 
B GND  RED SHIELD 
C GREEN  GREEN CENTER 
D GND  GREEN SHIELD 
E BLUE  BLUE CENTER 
F GND  BLUE SHIELD 
G HSYNC  GREY CENTER 
H GND  GREY SHIELD 
Rosemount Analytical  µCEM Continuous Analyzer Transmitter  3–1 










