GE MAC 1200 Servicing Instructions

GE Medical Systems MAC 1200 V 1.2 Page 7
Information Technologies 227 492 21 Rev F
1 Device description
This Service Manual describes device version V1.2 of MAC1200
The MAC 1200 is portable electrocardiograph with an integrated printing unit.
it is used to acquire, record and process ECG signals.
It is designed for line-power and battery operation. A power supply and battery with a
charging circuit are integrated into the instrument.
The integrated LCD graphics Display shows 3 ECG channels. It also displays status
information, filter settings, speed/format, gain and the status of the electrodes.
With the setup feature, the user is able to setup the device and the modes for his own
needs.
The patient cable for the acquisition of ECG signals is connected by means of a 15-pin
connector as used with MAC 500. Patient cables used with MAC 1000 cannot be
connected to the MAC 1200.
In Automatic Mode, the acquired ECGs can be transmitted to MUSE or a PC via an RS-232
interface. With the additional option Patient Memory, all acquired ECGs can be transmitied.
MAC1200 with version V1.1 has all features of the version V1.0 described above,
additionally version V1.1 has a Remote Start Input, an internal Modem Power Supply
and the new Software Release V5.1.
Device Part number Name Supply Voltage Remarks
Version
V1.2 101 168 23 MAC 1200 95 ... 240V ac US version
Hardware functional blocks:
The hardware comprises the following main functional blocks:
m Switching power supply
m NC Battery
m PCB NC Battery charge
m PCB Control CS CI
m PCB Modem Supply CS M
E Printing unit
m Keypad
= % VGA graphics display, monochrome

GE MAC 1200 Specifications

General

ECG Channels	12
Display	LCD
Power Supply	AC or battery
Frequency Response	0.05 to 150 Hz
Memory	Internal storage for ECG data
Device Type	ECG
Printing	Thermal
Filters	AC filter
Connectivity	RS-232, USB
Sampling Rate	1000 samples per second per channel