Model note · Holter

Philips DigiTrak XT Holter Recorder

Name: Philips DigiTrak XT Holter Recorder
Brand: Philips DigiTrak

The DigiTrak XT is a solid state, single AAA cell Holter recorder that stores up to 168 hours (7 days) of 3 channel ambulatory ECG on an internal MMC memory card for analysis in Philips Holter software. Unlike displayless recorders it has a small LCD with lead status and live trace screens for checking hookup, plus optional pacemaker pulse detection. After the study it is docked to a USB dual dock on the Holter PC for download. FDA cleared the hardware as the Braemar DL900 Series (K071733), and Philips sells it as model 860322.

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The model

Maker, model and type.

Maker: Philips Medical Systems (Philips North America); recorder cleared by FDA as the Braemar DL900 Series
Model: DigiTrak XT Holter Recorder (model 860322)
Device type: Holter
Main document: Open the public document

Key specifications

What the public record says.

Item	Value	Source
Channels and leads	3 ECG channels (CH1 to CH3 screens); 5 lead patient cable on an 11 pin connector	Source
Sample rate and resolution	175 samples/s, 10 bit	Source
Frequency response	0.05 to 60 Hz at -3 dB	Source
Record time and memory	24, 48, 72, 96 or 168 h settings; MMC memory, 256 MB for up to 96 h and 512 MB for up to 168 h	Source
Battery	One AAA alkaline IEC LR3 cell for recordings up to 96 h; one AAA lithium cell for longer recordings; rechargeable cells not recommended	Source
Display gain	0.5X, 1X or 2X on screen (about 5, 2.5 and 1.25 mV peak to peak); recording is always made at 1X	Source
Size and weight	91.44 x 55.88 x 19.05 mm; 70 g with battery; moulded UL 94V-2 plastic case	Source
Environment	Operating 0 to 45 C, 10 to 95% RH non-condensing; non-operating -10 to 70 C	Source
Classification	AAMI Type I AECG recorder; Type B applied part; not for infants under 10 kg (IEC 60601-2-47)	Source
FDA clearance	K071733, Braemar DL900 Series Holter Recorder, product code MWJ, Class II, decided 24 July 2007; the recall record links DigiTrak XT model 860322 to this clearance	Source

Recalls

Known FDA recalls.

Z-1345-20202020-01-13
Class 2: recorders made or distributed before 31 December 2019 (software B.1 and C.2) could display Error: 602 at start or docking and fail for new studies; 44,442 units; root cause device design; terminated 22 June 2023.
FDA record

Safety

Safety warnings from the record.

Remove the patient leads from the electrodes before defibrillation. Source
Pacer detection can give false positives from poor hookup or noise and false negatives with bipolar pacemakers, and displayed spikes do not reflect true pacing amplitude. Source
Do not immerse the recorder; patients should not wear it in the shower or bath. Source
Do not unplug the recorder while Preloading is flashing; an early disconnect corrupts the ECG. Source
Stopping a study early without the Early Out procedure can lose all recorded data. Source

Sources

Where this note comes from.

Not covered: The public instructions for use are the January 2008 edition 1; later editions and a 2025 addendum exist and may change details. The specification table in the PDF extracts with labels and values out of order, so values were matched to labels by sequence and cross checked with the settings table (175 s/s, 10 bit); confirm before publishing. The K071733 file holds only the decision letter and indications, with no technical summary. The steps for clearing Error 602 sit in Philips' correction letter, which was not opened, so they are not described. No service manual is public, so there are no board level or calibration details. MAUDE lists only a few dozen problem terms for this brand, including single figure counts for smoking, melted and fire; that is too few to show a trend and was not used as a failing part.

BMEssentia knowledge drafted from public information, reviewed by Hasan Khaled Ismail on 2026-10-24. Always follow the manufacturer's instructions for use and service manual.

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