Teledyne GFC-7000T - Trace CO2 Analyzer - manual User Manual
Page 168
Operating Instructions
Model GFC7000TA Carbon Dioxide Analyzer
Teledyne Analytical Instruments
150
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:
SETUP X.X
SECONDARY SETUP MENU
COMM
VARS DIAG ALRM
EXIT
SETUP X.X
PRIMARY SETUP MENU
CFG DAS
RNGE
PASS CLK
MORE
EXIT
SAMPLE* RANGE = 500.000 PPM CO2 =X.XXX
< TST TST > CAL
SETUP
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
SETUP X.X
COM1 MODE:0
SET>
EDIT
EXIT
SETUP X.X COM1 BAUD RATE:19200
<SET
SET>
EDIT
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
INS
inserts a
character before
the cursor location.
Press the [?]
key repeatedly to cycle through the
available character set:
0-9
A-Z
space ’ ~ !
# $ % ^ & * ( ) - _ =
+[ ] { } < >\ | ; : , . / ?
DEL
deletes a
character at the
cursor location.
SETUP X.X
COMMUNICATIONS MENU
ID INET
COM1
COM2
EXIT
EXIT
returns to
the previous
menu