Reviving the topic. Noticed the requirement for R30 to be = ohm (jumpered), yet this resistor is supposed to have 4k7 and more value when following trigger hardware assembly procedure?
Here's the WBO2 2 checklist:
HEATER2◦1k R120
◦10k R119
◦Q14
•NERNST_CELL2◦D43
◦10k R143
◦270k R124
◦75k R103 this component is deliberately left out from v3.2, so this channel can be used as a x1 amplification (voltage-follow mode) NBO2 channel.
◦10k R125
◦0.1 uF C83
◦10k R137
◦0.22uF C62
◦1M R139
•PUMP2+
• See PUMP1Filt: R55,C87◦10k R140
◦4x 100k R28, R31, R33, R34
◦510 R29
◦0 R30◦0.22uF C22
Here's the link to input trigger assembly where R30 pullup seems sort of important:
http://www.vems.hu/wiki/index.php?page=GenBoard%2FManual%2FInputTriggerHardWare I have had to remove it on some installs or change the value but never short it. Is there a conflict? Is R30 in WBO2 instructions a mistake?