The Model 4210A has 10 four terminal input channels consisting of 40 tellurium copper binding posts and 2 four channel outputs consisting of eight tellurium copper binding posts.
The 4216A has 16 four terminal tellurium copper binding posts and 2 outputs consisting of 8 tellurium copper binding posts. The Model 4216B has 16 four-conductor Teflon cable inputs with 2 four-conductor Teflon cable outputs.
The 4220A has 20 four terminal tellurium copper binding posts and 2 outputs consisting of 8 tellurium copper binding posts. The Model 4220B has 20 four-conductor Teflon cable inputs with 2 four-conductor Teflon cable outputs. The 4220A is also available in a 30 amp model to handle currents up to 30A (model 4220A/30).
Thông số kỹ thuật
10 four terminal tellurium copper inputs
2 four terminal tellurium copper outputs
Sealed relays
4A carrying current
250 Volts
Error contribution < 20 nV
Insulation resistance 1013 Ω
Front panel or IEEE operation
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