LMS-6 Radiosonde: Difference between revisions

@@ Line 111: / Line 111: @@
 |-
 |2, 8, 18*, 24, 30
 | +5VDC
 |18 needs more research, may occasionally drop to ground?
 |-
@@ Line 136: / Line 136: @@
 |12
 |
 |3.3v - 2.5KHz square wave (4msec p/p)
 |-
 |13
@@ Line 279: / Line 279: @@
 U13 - [http://web.archive.org/web/20200214104034/http://www.ti.com/lit/ds/symlink/cd4040b.pdf CD4040BPW]
 U14 - [http://web.archive.org/web/20200214042837/http://www.ti.com/lit/ds/symlink/cd74hc4051.pdf CD74HC4051PWR]
+U15 - 92JK ZC5 (can't find much on this component)
+[[File:Screenshot 20200904-195417.png|thumb|92JK ZC5 chip noted as U15]]
+{| class="wikitable"
+|+
+!U15 Pin
+!Function
+!Observations/Notes
+|-
+|1
+|GND
+|
+|-
+|2
+|5VDC
+|
+|-
+|3
+|
+|Rounded square wave (maybe sawtooth) alternating between 2msec and 4msec, resting at +3VDC between bursts
+|-
+|4
+|
+|Rounded square wave alternating between 3msec and 5msec, short periods of 0v, resting at +3VDC between bursts
+|-
+|5
+|
+|Data. Square wave. 5V space, 0v mark? Pulses around 250msec per bit.
+|-
+|6
+|
+|More rounded square wave bursts
+|-
+|7
+|5VDC
+|
+|-
+|8
+|3.3VDC
+|
+|}
 U16 - [http://web.archive.org/web/20190417163532/https://www.ti.com/lit/ds/symlink/lmv761.pdf LMV761]