IBM 1620 Manual page 44

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4.6
4. Current Driver Output
a.
/b.
!
Units Output (A2K28C) at 100 rna/ern.
Units Output (A2K28C) at 20
volts/ern.
5. Current Driver Output
---- a. Units (A2K28C)
~b.
1~:
Tens (A2K27C)
Hundreds (A2H03C)
Thousands (A2K02C)
6.
Units Decode Switch Output
____ a .
Unseleeted (A2H25E·) at 20 volts / ern.
Unseleeted (A2H25E) at 200 rna/ern.
Selected (A2H25E) at 20 volts / ern.
Selected (A2H25E) at 200 ma/ ern.