User's Manual

APPENDIX B
INTERFACE PORTS
Revised: 4 Feb 14 APX B-2 EST P/N AA107-195CM
Ethernet Port (Port 2)
The ESTeem Model 195C and 195M have a Full and Half-Duplex Auto-negotiation interface supporting both 10 Mbps and 100
Mbps (10/100BaseT). The port is compatible with TIA/EIA-568B cable configuration (Figure 2). A standard Ethernet patch
cable (AA09.2) can be used to interface the 195C/M to a computer. The Ethernet port is used for both programming the Model
195C/M and data transfer.
Figure 2: Ethernet Interface
RS-232C Data Ports (Ports 3 and 4)
The ESTeem Model 195C/M has two RS-232C data interfaces on the front panel. Port 3 has a full RS-232 interface with
handshake, while Port 4 has only Transmit, Receive and Ground. Port 4 will generally be used only when the 195C/M is pole
mounted with remote power. To interface the 195C/M to the serial port on the computer, you will need serial cable (AA0621)
with the following pin-out:
ESTeem Model 195C/M Port 3
(ESTeem Model AA0621 Cable)
RJ-45
Pin No.
Function DB-9
Pin No.
1
Data Set Ready (DSR)
6
2
Data Carrier Detect (DCD)
1
3
Data Terminal Ready (DTR)
4
4
Signal Ground (GND)
5
5
Receive Data (RxD)
2
6
Transmit Data (TxD)
3
7
Clear to Sent (CTS)
8
8
Request to Sent (RTS)
7