Plug-In Assen~Bly Config~~Ration - HP 3457A Service Manual
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- Service manual (273 pages)
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TO MULTIMETER
/
INPUT
CURRENT
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Figure 2-9.
HP
44491A 2-Wire Input Configuration
2-32. Plug-In Assembly Configuration
2-33. T h e Wiring Block Assembly configuration is dependent upon the particular Plug-In Assembly installed
(HP 44491A o r H P 44492A) and the user's application.
2-34.
HP
44491A Configuration. T h e
HP 4449
1 A Armature Relay Assembly can be configured f o r eight
2-wire input c h a ~ ~ n e l s , f o u r 4-wire input channels or a combination ol' 2 and 4-wire input channels. T h e as-
sembly also has t w o 2-wire input channels which are used f o r measuring current o r as actuator outputs. T h e
Wiring Block Assembly must be wired f o r the particular configurntion used.
2-35. Figures 2-9 through 2-11 show simplified schen~atics of the 1-IP 44401A Armature Relay Multiplexer
Assembly configured f o r 2-wire inputs, 4-wire inputs and current/actuator applications.
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