Teledyne gfc 7000ta operation manual Teledyne Analytical Instruments 150

Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer

6.15.2.6. Remote Access by Modem

The GFC 7000TA can be connected to a modem for remote access. This requires a cable between the analyzer’s COM port and the modem, typically a DB-9F to DB-25M cable (available from Teledyne Instruments with part number WR0000024).

Once the cable has been connected, check to make sure the DTE-DCE is in the correct position. Also make sure the GFC 7000TA COM port is set for a baud rate that is compatible with the modem, which needs to operate with an 8-bit word length with one stop bit.

The first step is to turn on the MODEM ENABLE communication mode (Mode 64, Section 6.11.5). Once this is completed, the appropriate setup command line for your modem can be entered into the analyzer. The default setting for this feature is

AT Y0 &D0 &H0 &I0 S0=2 &B0 &N6 &M0 E0 Q1 &W0

This string can be altered to match your modem’s initialization and can be up to 100 characters long.

To change this setting press:

SAMPLE*	RANGE = 500.000 PPM	CO2 =X.XXX
< TST TST > CAL		SETUP

EXIT returns to the previous menu

SETUP X.X PRIMARY SETUP MENU
CFG DAS RNGE PASS CLK MORE	EXIT
X.X SECONDARY SETUP MENU
COMM VARS DIAG ALRM	EXIT

SETUP X.X	COM1 MODE:0
SET>	EDIT	EXIT
SETUP X.X	COM1 BAUD RATE:19200
<SET SET>	EDIT	EXIT

SETUP X.X	COMMUNICATIONS MENU
ID INET COM1	COM2	EXIT

SETUP X.X	COM1 MODEM INIT:AT Y∅ &D∅ &H
<SET SET>	EDIT	EXIT
SETUP X.X	COM1 MODEM INIT:[A]T Y∅ &D∅ &H
<CH CH>	INS DEL [A]	ENTR EXIT

ENTR accepts the new string and returns to the previous menu. EXIT ignores the new string and returns to the previous menu.

<CH and CH> move the [ ] cursor left and right along the text string

		Press the [?]
		key repeatedly to cycle through the
INS inserts a		available character set:
	DEL deletes a	0-9
character before	character at the	A-Z
the cursor location.	cursor location.	space ’ ~ ! © # $ % ^ & * ( ) - _ =
		+[ ] { } < >\ ; : , . / ?

Teledyne Analytical Instruments 150