Support / FAQ

Please use this page to help answer any questions you may have. If further assistance is needed please call our office at (315) 434-9000.


Hookup Diagrams






Channel Electrode Position
Channel 1
CM - V₅
White (-)
Red (+)
Right Manubrial Border of Sternum
2 cm Right of Xiphoid Process on the Rib Margin
Channel 2
CM - V₁
Black (-)
Brown(+)
Left Manubrial Border of Sternum
Left Anterior Axilliary Line Sixth Rib
Green (Ground) Lower Right Rib Margin Over Bone



Channel Electrode Position
Channel 1
Modified V₅
White (-)
Red (+)
Over First Right Rib
Over Sixth Left Rib
Channel 2
Modified V₁
Black (-)
Brown(+)
Over First Left Rib
Over Fifth Right Rib
Green (Ground) Over Right Lower Border of Rib Cage




Channel Electrode Position
3- White Right Manubrial Border of Sternum, below Clavicle
1-, 2- Red Left Manubrial Broder of Sternum, below Clavicle
2+, 3+ Black Left 7th Rib, Midway betweeen Axillary line and Nipple line
1+ Brown Base of Sternum, center of body, above Diaphragm
Reference Green Lower Right Rib Margin Over Bone

If Amplitude of complexes is less than 1mv:

In Channel 1: Position new electrode closer to apex than current Brown electrode (toward patient’s Left – closer to V2 position). DO NOT USE SAME ELECTRODE, then move Brown wire to new electrode – if amplitude improves, remove first electrode.

In Channel 2 or 3: Position new electrode closer to apex than current Black electrode (toward patient’s Right – closer to V4 position). DO NOT USE SAME ELECTRODE, then move Black wire to new electrode – if amplitude improves, remove first electrode.

** Alternate Lead Placement Configurations may be used depending on specific aspects of EKG waveform being sought by the physician. Examples of these may be found in the Recorder’s Operator Manual for reference




Channel Electrode Position
Channel 1
CM - V₅
White (-)
Red (+)
Right Manubrial Border of Sternum
2 cm Right of Xiphoid Process on the Rib Margin
Channel 2
CM - V₁
Black (-)
Brown(+)
Left Manubrial Border of Sternum
Left Anterior Axilliary Line Sixth Rib
Channel 3
CM - V₃
Blue (-)
Orange(+)
Center of the Back
Lower Sternum Above the Diaphragm
Green (Ground) Lower Right Rib Margin Over Bone





Channel Electrode Position
Channel 1
V₂ (Modified)
White (-)
Red (+)
Right Manubrial Border of Sternum
Lower Sternum above the Diaphragm
Channel 2
V₅ (Modified)
Black (-)
Brown(+)
Left Manubrial Border of Sternum
Left Anterior Axilliary Line Sixth Rib
Channel 3
"Z-Axis Lead"
Blue (-)
Orange(+)
On the Back, Base (Inferior Angle) of the Left Scapula
Right of the Xiphoid Process on the fifth Rib Margin
Green (Ref. or Ground) Lower Right Rib Margin Over Bone


If Amplitude of complexes is less than 1mv: (Shows steady Red LED on Trillium 1000-4000 recorders)

In Channel 1: Position new electrode closer to apex than current Red electrode (toward patient’s Left – closer to V3 position). DO NOT USE SAME ELECTRODE, then move the Red wire to new electrode – if amplitude improves, remove first electrode.

In Channel 2: Position new electrode closer to apex than current Brown electrode (toward patient’s Right – closer to V4 position). DO NOT USE SAME ELECTRODE, then move the Brown wire to new electrode – if amplitude improves, remove first electrode.

In Channel 3: Position new electrode closer to apex than current Orange electrode (toward patient’s Left – closer to V2 position). DO NOT USE SAME ELECTRODE, then move the Orange wire to new electrode – if amplitude improves, remove first electrode.

** Alternate Lead Placement Configurations may be used depending on specific aspects of EKG waveform being sought by the physician. Examples of these may be found in the Recorder’s Operator Manual for reference.



Frequently Asked Questions


A. Forest Medical’s Trillium Silver™, Trillium Gold™, and Trillium Platinum™ Holter Analysis Software is compatible with Microsoft Windows XP Professional, Windows XP Home and all other versions of the operating system back to Windows 98 Second Edition. Our Trillium PC Companion software is compatible with Windows XP Home and all other versions of the operating system back to Windows 3.1.

What will vary with different versions of the Windows operating system are the connectivity methods available for downloading patient studies. Versions of Windows earlier than Windows 98 Second Edition do not reliably support USB, so downloading via a USB card reader is not an option. With Windows 2000 and Windows XP, the serial/parallel interface cable is not supported, so with these systems downloading via the Forest Medical PC Interface cable is not available. To tell the Trillium software which interface method to use, select File/Download Setup and click the appropriate device type from the list, then click OK to save the setting. Please contact Forest Medical for assistance before upgrading PC hardware or Operating Systems to insure that the appropriate interface device is in place.

A. Forest Medical’s Trillium Holter Analysis Software can run on virtually any Windows based PC. We recommend as a reasonable minimum a Pentium class computer with 128 Megabytes of RAM, 2 available USB ports, an SVGA monitor, 2-Button Mouse, 300 dpi Windows supported printer, a CD-ROM drive (to install the software), and at least 200 Megabytes of available Hard Disk space (for the software and several patient studies). Please call for specific advice regarding existing computers or intended replacements that will be running the Trillium software.

A. Yes. With the Trillium 1000™ Holter Recorder/Analyzer and Trillium 2000™, Trillium 3000™, and Trillium 4000™ Holter Recorders, simply remove the patient cable from the monitor. The screen will change to read: “Suspend”. Hold down the leftmost button for approximately 6 seconds. The screen will change to read: “End Mon? No / Yes”. Press the button below “yes”. The screen will now read: “Creating Report”. When the screen changes to read: “Monitor Done”, the report is completed and ready to be downloaded.

With the Trillium 5000™ Holter Recorder, press and hold the Left Arrow button and the Enter Button simultaneously, the screen will show “Preparing to Shut Down” then go blank. The report is now ready to be downloaded.

A. In a very small percentage of monitoring sessions (less than 5%), the flash memory card will fill up with data before the end of the monitoring session. Any combination of several factors may contribute to this. There is no problem with the operation of the device, and the next monitoring session will not likely repeat this message. The monitor will detect that its memory capacity is full and stop itself early and create the report. Your patient’s data should be ready to download. Usually, the report will be only slightly less than the full 24 hours.

A. The “MC FULL” is an infrequent event that indicates one or more of the following conditions are present:

  • Poor Hook-up Quality leading to excessive artifact in the recording (Initial Signal Quality on one or more leads in the “Red Zone”)
  • Loss of Electrode
  • Intermittent break in a lead wire
  • Patient in an electrically “noisy” environment: sleeping under an electric blanket, exposed to microwaves, strong electro-magnetic fields, etc.
  • Sustained high heart rate (18 plus hours over 175 BPM)
  • Unusually large amount of complex arrhythmia
  • Paced patient with some combination of the above
  • 3-channel recording with some combination of the above

The first two conditions are easily controlled with consistent attention paid to the proper preparation of the patient, selection of electrode sites and use of high-quality Holter electrodes. Lead wires should be carefully cleaned and inspected after each use. The patient should be instructed to avoid electrically noisy environments as much as possible for the duration of the monitoring period. The other conditions are generally outside of your control, and quite rare.

An MC Full condition does not mean that the memory card needs to be erased or is no longer usable. It is simply an indicator that during the monitoring session one or more of the above conditions were present.




Extended Warranty Coverage

Forest Medical, LLC warrants the Trillium™ Holter Monitor to perform according to manufacturer's specifications for a period of one (1) year from the date of receipt of payment of the Extended Warranty. Forest Medical, LLC will either repair or replace any components found to be defective or at variance from manufacturer's specifications within this time. Each Trillium Recorder may be returned to Forest Medical each year for inspection, cleaning and general maintenance at the customer’s discretion during that time. It shall be the purchaser's responsibility to return the instrument directly to Forest Medical, LLC, post-paid. This warranty does not include cables, batteries and other accessories. This warranty does not include breakage or failure due to tampering, misuse, neglect, accidents, modification, or shipping. This warranty is void if the instrument is not used in accordance with the manufacturer's recommendations. This warranty is void if unauthorized or unqualified persons attempt to make repairs. The warranty entitles the owner of the equipment to replacement or repair of the part(s) or unit at Forest Medical, LLC's discretion. Purchase date determines warranty requirements.

THE WARRANTY PROVIDED ABOVE AND THE LIABILITIES AND OBLIGATIONS OF Forest Medical, LLC PROVIDED FOR THEREIN ARE EXCLUSIVE AND IN LIEU OF ALL OTHER REMEDIES, WARRANTIES, GUARANTEES, OR LIABILITIES, EXPRESS OR IMPLIED, ARISING BY LAW OR OTHERWISE (INCLUDING WITHOUT LIMITATION ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE AND CONSEQUENTIAL DAMAGES) WHETHER OR NOT OCCASIONED BY Forest Medical LLC’s NEGLIGENCE.

Please return the instrument registration card for warranty validation.

In case of a defect, or other warranty service, please call Forest Medical, LLC for a Return Material Authorization (RMA) Number and return the unit post-paid directly to the manufacturer. No returns will be accepted without an RMA number issued by Forest Medical, LLC. Mark the RMA number on the outside of the package and return to:

WARRANTY SERVICE FOREST MEDICAL, LLC
6700 OLD COLLAMER ROAD
EAST SYRACUSE, NY 13057

USA Phone: 315-434-9000

Fax: 315-432-8064

Outside the United States, please contact your local Forest Medical, LLC authorized distributor for return instructions.