Magnacoustics Inc™ © 2012 1-800-637-2282 REV-S 3 |
System Notes
Our MagnaLink™ and MagnaCoil™ Pneumatic Stethoscope Style Headsets attenuate gradient noise to
patient’s ears by 30dB (NRR) Tested per ANSI standard and comply with the GEHC MR Operators Guide.
Active volume compensation (Auto Gain) changes volume automatically to help mask MR gradient sounds.
Patient volume and music selection controls with voice feedback for maximum comfort and versatility.
Built-in intercom allows the Technologist to communicate directly with the patient even while the scan is in
progress.
Complete FM stereo, CD, iPod and USB interface.
Built-in interface for AutoVoice and intercom integration for all GE and Hitachi MRIs.
Built-in Patient Ready Signal (PRS) to signal technologist the patients’ readiness for the scan to begin.
Built-in interface for fMRI.
Built-in interface audio portion of Video.
Preventive Maintenance
EXTERNAL INTERCONNECT CAUTION: Because we use the Scan Room Shielding as our ground
reference, any auxiliary connections to the stereo that are at a different ground potential may also cause
system damage, interference in the scanner and a 60 cycle hum from the speakers or patient headset. Do
not connect any external Antenna or Audio input to the stereo without the proper isolation.
1. Radio Shack Ground Loop Isolator Catalog # 270-054 with the proper phono to 3.5mm stereo adapter
and Radio Shack Catalog # 274-883 or appropriate adapter must be used.
2. A 75 to 300 ohm adapter in series with the any external antenna source must be used.
POWER CONNECTION CAUTION:
1. Please ensure that all low voltage connections are complete before connecting the AC power cords.
2. Please do not make or break any connections to our equipment while the AC plugs are live / connected
to power or damage will result!!
3. To preserve RF integrity in the scan room we float our ground from the penetration panel.
4. Please ensure that the module and stereo AC plugs are connected to outlets that are at the same
Ground Potential as the Scanner or Damage to our Equipment and or poor SNR performance will
result!!
CD-ROM USE NOTE:
1. CD-ROM media is subject to deterioration, just like any other material. CD-ROMs are made of many
layers, and the materials used in these layers change over time, depending on when they were made
and how they age. Depending on susceptibility, wear, and environment, various layers of a CD-ROM
may undergo oxidation; hydrolysis or mechanical stress, leading to damage that will cause the CD-
ROM to skip in your favorite song or not to play at all.
2. It’s nearly impossible to prevent the accumulation of dust, scratches and scuffs from occurring,
especially with frequent use; the resulting accumulation can mean either a skip in your favorite music
track, or not playing at all. To get the best performance from your CD-ROMs, keep them and the optical
pickup mechanism clean. Whenever possible, discs should be stored in their case. Dirty CD-ROMs can
also transfer dust or debris on the optical pickup mechanism by centrifugal force. CD-ROMs should be
cleaned every week or sooner based on usage and if used in a dusty environment or the system has
trouble reading them clean more often.
a. To clean the CD disk, purchase a Maxell CD-335 Scratch Repair / Cleaner Kit Model: CD-335
available from RadioShack Catalog #: 5501660. These are also available from Amazon.
b. To clean the CD optical pickup mechanism, purchase a Maxell CD-340 CD Lens Cleaner Model:
CD-340 from RadioShack Catalog #: 55016610. These are also available from Amazon.
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