MAC ® 1200 Operations Manual - Jaken Medical...

Recording in 12 Lead Mode
5.5.6 Cart to Cart Communication
Via modem, ECG data can be transmitted between
two MAC 1200 units or between a MAC 1200 and
any ECG recorder using the CSI protocol (see sections
5.5.1 and 5.5.2).
5.5.7 Modem Setup (for Modem --> other)
If you prefer to use another modem than the standard
models listed in the Communication menu
(MultiTech, Elsa), you will have to enter a few
parameters required for communication between the
MAC 1200 and the modem.
For the AT commands that your modem understands,
please refer to the modem user instructions.
Three command sequences have to be entered in all,
each of which defines a specific modem operating
state:
1. the modem is initialized (init string)
2. a communication link is established (dial string)
3. the communication is terminated (hangup string)
These three strings are entered in the modem setup
menu (see section 3.6 "Connecting External Devices").
The example below shows the command strings for
the MultiTech ZDX modem.
1. AT Command for Modem Initialization
AT
&F
M1
X3
prefix that precedes every command
line
fetch factory configuration (loads the
factory configuration from ROM into
the active configuration memory
(RAM))
speaker is always on
call progress signal monitoring
enabled
S0=1 auto answer after one ring
V0 digit result codes selected (0 to 999)
init string: AT&FM1X3S0=1V0
2. AT Command for Establishing a Communication
Link
Example of a dial string for a modem connected to a
branch (PBX system) and dialing a modem via the
public telephone network, using the touch tone
mode.
AT
DT
xxx
W
dial string: ATDTOW
prefix that precedes every command
line
touch tone dial mode
after DT, enter the characters for
access to the public telephone network
(e.g. 0)
W, placed after a number, tells the
modem in a PBX system to wait for
the dial tone of an outside telephone
line
3. AT Command for Termination of the Communication
The communication is terminated in two steps.
First of all, the MAC 1200 sends an escape command
to return from the on-line state to the command
state. Then the hangup command follows:
+++ escape command
AT
H
prefix that precedes every command
line
hangup command
hangup string: +++ATH
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