HP-30b unknown options



#2

I'm exploring my 30b and I hold the PMT button and turn the unit on. I see Tst Screen, Tst Keyboard etc. onto TSys Off and Slow Clk.

Does anyone know what Tsys and Slow Clk are, or what they do?

Thank you for any information on this.

CJ


#3

Tsys will, if enabled, prevent the calculator from going into sleep mode, which means that it will drain the batteries much faster than usual.

#4

Slow Clk is a way to tell the firmware the actual processor speed which depends on temperature, humidity, and whether it's a holiday or not ;-). The test system has a serial connection, and to make this work a more accurate knowledge of the speed of the system is needed.


#5

Thank you Eric and Marcus for the information.

CJ


Possibly Related Threads...
Thread Author Replies Views Last Post
  DIY HP 30b WP 34s serial flash/programming cable Richard Wahl 2 794 12-04-2013, 11:14 AM
Last Post: Barry Mead
  HP Prime Programming options Egan Ford 8 872 10-06-2013, 10:44 AM
Last Post: Eddie W. Shore
  Flashing cable for HP 20 / 30B Stefan Koenig 3 713 09-19-2013, 05:53 AM
Last Post: Marcus von Cube, Germany
  Any 30b cables left? patryk 7 911 09-16-2013, 02:54 PM
Last Post: Marcus von Cube, Germany
  HP-30B (WP-34S) Technical Documentation Barry Mead 3 648 09-09-2013, 03:07 PM
Last Post: Harald
  HP's thinking behind the 20b/30b? John Ioannidis 3 590 09-07-2013, 10:21 AM
Last Post: Tim Wessman
  30b/34s interfacing? ross sponholtz 5 756 06-26-2013, 01:41 AM
Last Post: Walter B
  [OT] Unknown Olivetti calculator? Cristian Arezzini 4 696 05-24-2013, 01:17 PM
Last Post: Thomas Klemm
  Inexpensive HP 30b Matthew Richards 23 2,137 05-22-2013, 10:10 AM
Last Post: Dave
  hp-30b with free shipping sjthomas 9 1,064 04-14-2013, 02:46 AM
Last Post: Gerson W. Barbosa

Forum Jump: