Atec Agilent-34970A-3499ABC - Manual (Page 3)

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The size of the 34970A and 3499A,
3499B, and 3499C mainframes
enable them to accommodate a
specific number of modules. The
34970A mainframe provides 3 slots
for modules to be installed. The
3499A, 3499B and 3499C differ only
in the number of slots that are avail-
able for modules. The 3499A can
accommodate up to 5 modules. The
3499B can accommodate 2 modules.
The 3499C has been designed with 9
electrical connections for modules,
and enough physical space for 14
modules. The additional space in
the 3499C mainframe enables the
2- or 3-slot RF and Optics modules
to be plugged in without giving up
a usable slot. The combination of an
individual module channel count,
and the total number of modules
that can be installed in one main-
frame determines the total number
of channels available for an appli-
cation. Table 1 (below) gives you an
idea of the maximum number of
channels possible for each main-
frame by showing the total number of channels available when a high
channel count, 2-wire multiplexer
module is installed in every avail-
able slot. The 34970A and
3499A/B/C are best suited for appli-
cations with less than 60 channels
up to 360 channels. For applications
with a channel count greater than
360 channels, VXI switching is
recommended. Information on
Agilent VXI switching can be found
at
www.agilent.com/find, then enter
System Switches.
The modules available for the
34970A and the 3499A/B/C are
listed below in Table 2. As you can
see from the chart there are many
different types of switch modules to
choose from. You can easily identify
a module or modules that provides
the best solution your test applica-
tion needs. For more specific
module specifications please refer
to the product data sheets at:
www.agilent.com/find/3499 and/or
www.agilent.com/find/34970A.
Mainframe Mainframe # of Module Maximum
Size Slots # of Channels
(2-wire)
34970A 1 /
2
Rack 3 60
2U
3499B 1 /
2
Rack 2 80
2U
3499A Full Rack 5 200
2U
3499C Full Rack 9 360
5U (electrical)
14
(physical)
Table 1. Mainframes
Module Type 34970A 3499A/B/C
Multiplexer 34901A 20 Ch armature N2260A 40 Ch armature
34902A 20 Ch reed N2266A 40 Ch reed
34908A 40 Ch 1 wire armature N2270A 10 Ch 1000V
44470A 10
Ch
44470D 20 Ch
General Purpose 34903A 20 Ch N2261A 40 Ch
N2267A 8 Ch, 8A
44471A 10 Ch
44471D 20 Ch
44477A 7 Ch SPDT (Form C)
Matrix 34904A 4x8 N2262A 4x8
44473A 4x4
Digital I/O N2263A 32-bit TTL
44474A 16-bit TTL
Multifunction 34907A Two 8-bit Dig I/O, N2264A 12 GP, 3 GP 5A, 16-bit Dig I/O
26-bit Event Counter, N2265A 4x4 matrix, 16-bit Dig I/O
Two 16-bit Analog out N2269A 2 DAC, 16-bit Dig I/O
Fiber-Optical N2280A Quad 1x2
Multiplexer N2281A Dual 1x4
N2282A Single 1x8
RF & Microwave 34905A Dual 4 Ch 2G 50 Ω N2268A Dual 1x4 3.5G 50 Ω
34906A Dual 4 Ch 2G 75 Ω N2272A Single 1x9 1.0G 50 Ω
N2276A Dual 1x6 20G 50 Ω
N2276B Relay driver (2 switches)
44472A Dual 1x4 300M 50
Ω
44478A Dual 1x4 1.3G 50 Ω
44478B Dual 1x4 1.3G 75 Ω
44476A Triple 1x2 18G 50 Ω
44476B Relay driver (2 switches)
Table 2. Modules