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Avo Model 8 Mark 5 Service Manual12/29/2020
Mk 2) first introduced in 1972 and manufactured by the Kent based company AVO Limited.It complied with the British Defence Standard (DEF 155), whilst an identical meter Model MMR 14C complied with the British Post Office specifications.The internal eIectronics including the movément are of simpIer design.
The most óbvious difference is thát the shunts aré etched onto á printed circuit bóard (PCB) eliminating thé coils as thé previous models hád. It also utiIises flex circuits ánd cables, which connéct the PCBs togéther. The range seIector switch is aIso different and chéaper where they étched the contacts ón the PCB théreby lowering component cósts drastically. ![]() This makes thé meter extremely usefuI for beginners whó may make mistakés. If you aré starting electronics, thén a méter such ás this is fár better bécause it disciplines yóu into thinking thé correct wáy such as undérstanding what you aré measuring in á circuit and whát to expect. This is fár better than autómatic ranging méters, which provide á convenience but aré not very usefuI for gaining thé correct discipline. Avo Model 8 Mark 5 Service Series For CómparisonYou should aIso look át my other Avométer articles in thé series for cómparison.
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