14 Product Change History

Due to upgrades performed on delivered MR850 Respiratory Humidifiers, software and hardware versions are listed below.

It should be realised that possible future upgrades may change the operation of the Humidifier. Please note that software Versions 4.40 and 4.44 will only work with Revision A or B PCB’s and Version 5.12 or later will only work with Revision C, D or E PCB’s.

History Change for model JHU

PCB

 

Software

 

Introduction

Serial Number

Comments

Version

 

Version

 

 

 

 

 

 

 

 

 

 

 

A

 

4.40

19

September 1998

9885xxx00000

First production release.

 

 

 

 

 

 

 

A

 

4.44

22

October 1998

 

Software upgrade.

 

 

 

 

 

 

 

C

 

5.12

12

April 1999

9985xxx00053

Release of new PCB to

 

 

 

 

 

 

accommodate change in

 

 

 

 

 

 

temperature probe circuit

 

 

 

 

 

 

redesign.

 

 

 

 

 

 

C

 

5.13

5 May 1999

 

Software upgrade.

 

 

 

 

 

 

 

D

 

5.13

14

January 2000

2000-85xxx00028

Release of new PCB to improve

 

 

 

 

 

 

manufacture.

 

 

 

 

 

 

D

 

5.23

3 April 2000

2000-85xxx01661

Software upgrade for low flow

 

 

 

 

 

 

control stability.

 

 

 

 

 

 

 

D

 

5.33

25

July 2000

2000-85xxx02806

Software upgrade, allowing

 

 

 

 

 

 

Neonatal volume ventilation

 

 

 

 

 

 

capability. Manual Temperature

 

 

 

 

 

 

Compensation (TC)

 

 

 

 

 

 

implemented.

 

 

 

 

 

 

 

D

 

5.34

11

October 2000

2000-85xxx04212

Software upgrade to improve

 

 

 

 

 

 

EMI immunity.

 

 

 

 

 

 

 

D

 

5.45

19

February 2001

2001-85xxx00427

Software upgrade.

 

 

 

 

 

 

D

 

7.00

2 April 2002

2002-85xxx00976

Software upgrade.

 

 

 

 

 

 

Improve HC speed in Non-

 

 

 

 

 

 

invasive mode.

 

 

 

 

 

 

F&P Co-axial circuit recognition

 

 

 

 

 

 

and control.

 

 

 

 

 

 

 

D

 

5.70

14

April 2003

2003-85JHU008266

Software release USA only.

 

 

 

 

 

 

 

D

 

7.23

31

May 2004

2004-85JHU006084

Added Non-heater wire

 

 

 

 

 

 

operation.

 

 

 

 

 

 

PTS access through serial

 

 

 

 

 

 

command.

 

 

 

 

 

 

Humidifier model protection.

 

 

 

 

 

 

Remove HC.

 

 

 

 

 

 

Software release USA only.

 

 

 

 

 

 

E

 

7.23

5 July 2004

2004-85JHU008300

Release of new PCB capable of

 

 

 

 

 

 

selective soldering.

 

 

 

 

 

 

 

60

MR850 Technical Manual

* Revision J * Issued November 2005 * Ref. 185041340 (185041713 internal)