Mercurial > whatever / changeset

--- a/content/hp34970a.rst	Thu Nov 05 23:28:39 2020 +0100
+++ b/content/hp34970a.rst	Sat Nov 07 15:45:09 2020 +0100
@@ -4,7 +4,7 @@
 
 :Author: David Douard
 :Category: Electronics
-:Tags: HP, 34970A, DMM, repair, test equipment
+:Tags: HP, 34970A, HP34970A, DMM, repair, test equipment
 :series: HP 34970A repair
 :series_index: 1
 

--- a/content/hp34970a_2.rst	Thu Nov 05 23:28:39 2020 +0100
+++ b/content/hp34970a_2.rst	Sat Nov 07 15:45:09 2020 +0100
@@ -4,7 +4,7 @@
 
 :Author: David Douard
 :Category: Electronics
-:Tags: HP, 34970A, DMM, repair, test equipment
+:Tags: HP, 34970A, HP34970A, DMM, repair, test equipment
 :series: HP 34970A repair
 :series_index: 2
 

--- a/content/hp34970a_3.rst	Thu Nov 05 23:28:39 2020 +0100
+++ b/content/hp34970a_3.rst	Sat Nov 07 15:45:09 2020 +0100
@@ -4,7 +4,7 @@
 
 :Author: David Douard
 :Category: Electronics
-:Tags: HP, 34970A, DMM, repair, test equipment
+:Tags: HP, 34970A, HP34970A, DMM, repair, test equipment
 :series: HP 34970A repair
 :series_index: 3
 
@@ -17,8 +17,8 @@
 Protocol
 ========
 
-The serial communication takes place at a rather unusual speed: 187.5
-kbits/s, otherwise, a standard 8N1 scheme.
+The serial communication takes place at a rather unusual speed: 187500 bit/s,
+otherwise, a 8E1 scheme (with even parity bit).
 
 The protocol consist in a transmission frame with a start of
 transmission handcheck, some commands with arguments, and an end of
@@ -75,8 +75,9 @@
 The indicator flags are always sent as 4 bytes, each bit controlling
 one indicator.
 
-The indicator flags I've been able to identify so far
-are below.
+The indicator flags I've been able to identify so far are below (please see
+`this page <{filename}/hp34970a_protocol.rst>`_ for the complete protocol
+description).
 
 Let's say the frame is: ``<0x0A> <0x04> <F1> <F2> <F3> <F4>``, then:
 

--- a/content/hp34970a_4.rst	Thu Nov 05 23:28:39 2020 +0100
+++ b/content/hp34970a_4.rst	Sat Nov 07 15:45:09 2020 +0100
@@ -4,15 +4,15 @@
 
 :Author: David Douard
 :Category: Electronics
-:Tags: HP, 34970A, DMM, repair, test equipment
+:Tags: HP, 34970A, HP34970A, DMM, repair, test equipment
 :series: HP 34970A repair
 :series_index: 4
 
 
-After a summer pause, I'm back on my HP34970A replair project.  In
+After a summer pause, I'm back on my HP34970A repair project. In
 `the previous post in this series <{filename}/hp34970a_3.rst>`_, I've
-started to reverse ingineer the serial protocol between the CPU board
-and the fonrt panel, and implement a prototype of replacement display.
+started to reverse engineer the serial protocol between the CPU board
+and the front panel, and implement a prototype of replacement display.
 
 
 OLED display