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SCHILLER AT-2plus 6-Channel ECG Unit
SERVICE HANDBOOK Issue d May 2002
Chapter 1
Operating Elements
Memory and Data Transmission Option (cont.)
Modem Transmission
(RS-232 with external modem)
To transmit over the telephone network proceed as follows
•
Set Communication mode to MODEM - key sequence:
ALT - 0 - 9 - 2 - 2
•
Enter Phone number - key sequence:
ALT - 0 - 9 - 3 - 2
the following is displayed:
•
Enter the telephone number preceded by `P` or `T` (tone or pulse).
A comma `,` gives a one second pause in dialing - this may be necessary if for example a
outside line is required.
•
Enter the modem initialisation codes.
Full details will be found in the user guide for your
modem. However, the modem initialisation must contain at the minimum, the following
commands with the prefix `AT`.
`Q0`- modem sends response
`V0`- numerical response codes
`E0`- no command echo
The standard modem initialisation code is: ATB0L1V0Q0E0S0=0
•
Press the patient key to store settings.
•
Connect the modem cable assembly (supplied with modem) between the RS-232 connector
on the AT-2plus and the modem
•
Ensure that the SEMA communication program (SEMACOMM) is active on the computer
(see SEMA handbook).
•
Enter the memory menue by pressing the ALT key and then press key `M`:
ALT - M
•
Press and hold the ALT key and then press key `T `:
ALT + T
The message `TRANSMITTING` appears while the unit is sending in the message box
(under the date and time box)
If a transmission error occurs the message `Tx ERROR` is displayed.
•
Check all settings in the SEMACOMM program (baud rate; parity - none; stop bit - 2; time
between blocks, records - 100ms).
•
Check that the transmission speed is the same in both the AT-2plus and the SEMACOMM
program.
•
To stop transmission press and hold the ALT key and then press key `Q`.
ALT + Q
