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public:calculator:info:dm41l_info [27/01/26 13:45 GMT] – [RTC] johnpublic:calculator:info:dm41l_info [01/02/26 08:36 GMT] (current) – [Update January 2026] john
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 ^Date^Serial No.^Firmware^Version^Firmware Files^Firmware Tool^ ^Date^Serial No.^Firmware^Version^Firmware Files^Firmware Tool^
-| 26/08/24| 05121 | DM41_32 | V32 |{{ :public:calculator:info:dm41_32.zip |}}|{{ :public:calculator:voyage_firmware_tool.zip |}}| +| 26/08/24| 05121 | DM41 | V32 |{{ :public:calculator:info:dm41_32.zip |}}|{{ :public:calculator:voyage_firmware_tool.zip |}}| 
-| 01/02/25 | 05121 | DM41_33 | V33 | {{ :public:calculator:info:dm41_33.zip |}} |  | +| 01/02/25 | 05121 | DM41 | V33 | {{ :public:calculator:info:dm41_33.zip |}} |  | 
-| 21/12/25 | 05121 | DM41_34 | V34 | {{ :public:calculator:info:dm41_34.zip |}} | Linux, using lpc21isp |+| 21/12/25 | 05121 | DM41 | V34 | {{ :public:calculator:info:dm41_34.zip |}} | Linux, using lpc21isp |
  
 ===== RTC ===== ===== RTC =====
  
-^Date Start^Date Check^Delta^Latest Err r^Average Error^Comments^ +  * RTC is not capable of calibration/correction? 
-|23/01/26 |  |49.6  |  | Delta = 49.6 s @ Period Start |+    * Perhaps the HP41CX Time corr. feature works? 
 +    * Gather data on inherent time error for a period and then try to change the values via HP41CX functionality 
 + 
 +==== Update January 2026 ==== 
 + 
 +Using my [[..:..:miscellany:watches:watchcheck|python Watchcheck]] 
 + 
 +^Date Start^Date Check^Delta^Latest Rate Error^Average Rate Error^Comments^ 
 +|23/01/26 |  |+49.6  |  |  | New Period Start |
 |23/01/26|24/01/26 |+50.6 |+1.0 |+1.0 | After 24 hours | |23/01/26|24/01/26 |+50.6 |+1.0 |+1.0 | After 24 hours |
 |23/01/26|26/01/26|+52.8 |+1.2 |+1.1 | After 3 days | |23/01/26|26/01/26|+52.8 |+1.2 |+1.1 | After 3 days |
 |23/01/26|27/01/26 |+53.6 |+1.0 |+1.1 | After 4 days | |23/01/26|27/01/26 |+53.6 |+1.0 |+1.1 | After 4 days |
 +
 +===== Swiss Micros Info =====
 +
 +  * Firmware      : [[https://technical.swissmicros.com/voyager/firmware/]]
 +  * Documentation : [[https://technical.swissmicros.com/voyager/doc/voyager_user_manual.html|Online HTML User Manual]]
 +  * Documentation : {{ :public:calculator:info:voyager_user_manual.pdf | PDF Manual}}
 +  * Product Page  : [[https://www.swissmicros.com/product/dm41l|DM41L]]
 +
 +
 +===== HP-41CX Owner's Manuals =====
 +
 +Download from [[https://literature.hpcalc.org]]
 +
 +  * HP-41CX Owner's Manual Vol. 1 : [[https://literature.hpcalc.org/community/hp41cx-om-vol1-en.pdf]]
 +  * HP-41CX Owner's Manual Vol. 2 : [[https://literature.hpcalc.org/community/hp41cx-om-vol2-en.pdf]]
 +  * HP-41CX Quick Reference Guide : [[https://literature.hpcalc.org/community/hp41cx-qrg-en.pdf]]
  
 ===== Further Information ===== ===== Further Information =====

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