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Module Type 34980A 3499A/B/C
Multiplexer 34921A 40 Ch armature 300V 1A N2260A 40 Ch armature 200V 1A
34922A 70 Ch armature 300V 1A N2266A 40 Ch reed 200V .5A
34923A 40 Ch reed 200V .5A N2270A 10 Ch 1000V 1A
34924A 70 Ch reed 80V .5 44470A 10 Ch armature 250V 2A
34925A 40 Ch FET +/-80V .5A 44470D 20 Ch armature 250V 2A
General Purpose 34937A 28 Ch, 1A and 4 Ch, 5A N2261A 40 Ch
34938A 20 Ch, 5A N2267A 8 Ch, 8A
44471A 10 Ch
44471D 20 Ch
44477A 7 Ch SPDT (Form C)
Matrix 34931A Dual 4x8 armature 300V 1A N2262A 4x8 armature 200V 1A
34932A Dual 4x16 armature300V 1A 44473A 4x4 armature 250V 2A
34933A Dual 4x8 reed 80V .5A
Digital I/O See multifunction 34950A, 34952A N2263A 32-bit TTL
44474A 16-bit TTL
Multifunction 34952A 32-bit Digital I/O with 2 Ch N2264A 12 GP, 3 GP 5A, 16-bit Dig I/O
DAC and Counter/Timer N2265A 4x4 matrix, 16-bit Dig I/O
34950A 64-bit Digital I/O with Pattern N2269A 2 DAC, 16-bit Dig I/O
Generator/Detector
Fiber-Optic Multiplexer N2280A Quad 1x2
N2281A Dual 1x4
N2282A Single 1x8
RF & Microwave 34941A Quad 1x4 RF 1.5G 50Ω, SMA N2268A Dual 1x4 3.5G 50Ω
34946A 4G/20G 50Ω, 2 SPDT SMA N2272A Single 1x9 1.0G 50Ω
(N1810TL) N2276A Dual 1x6 20G 50Ω
34947A 4G/20G 50Ω, 3 SPDT, SMA (87106B/4B)
(N1810UL) 44472A Dual 1x4 300M 50Ω
44478A Dual 1x4 1.3G 50Ω
44476A Triple 1x2 18G 50Ω
(8762B)
34942A Quad 1x4 RF 1.5G 75Ω, mSMB 44478B Dual 1x4 1.3G 75Ω
34945A uwave Switch/Attn Driver N2276B Relay driver (2 switches)
32 SPDT or 8 attenuators Choose from switches;
The following µwave switches and 87104A/B/C
attenuators are supported with 87106A/B/C
the distribution
1
boards; also drive two external attenuators
N181x series SPDT switches 84904/6/7/K/L
876X series SPDT switches
87104x/106x multi-port switches 44476B Relay driver (2 switches)
87606x series matrix switches Choose from switches;
8722x transfer switches 8762A/B/C/F
849x series attenuators 8763B/C
8490x series attenuators 8764B/C
Generic screw terminal connections
Third-party switches (screw terminals)
DAC 34951A Quad 16-bit D/A Converter See multifunction
Breadboard 34959A +12 V, +5 V 44475A 5.5
Table 2. Direct comparison of 34980A and 3499 modules