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Chapter 9 Specifications
44478A/B 1.3 GHz Dual 4-to-1 MUX Modules
4
9
44478A/B 1.3 GHz Dual 4-to-1 MUX Modules
Specifications in the table describe the modules’ warranted performance
over the temperature range 0º to 55º C. Information marked by the
“Typical” designation is helpful in applying the modules, but is non-
warranted information
.
INPUT CHARACTERISTICS
Total Channels:
Dual 4 Chans
Maximum Voltage:
Any Center/Shield to Any
Other Center/Shield/
Chassis:
42 V dc + ac peak
Maximum Current:
Per Channel or Common: 1 A dc, or ac rms
Maximum Power:
Per Channel or Common:
Each Resistive Termination:
24 W, 24 VA or 44 dBm
0.25 W, 0.25 VA or 24 dBm
Characteristic Impedance:
44478A:
44478B:
50 Ω
75 Ω
Relay Life (Typical):
With No Load:
At Maximum Rated Power:
5 x 10
6
operations
10
5
operations
Maximum Scan Rate:
a
43 Chans/sec
DC PERFORMANCE
Thermal Offset:
Per Channel: < 6 µV (< 2 µV, Typical)
Initial Closed Channel
Resistance:
< 1 Ω
Insulation Resistance
(any terminal to any terminal)
≤ (40
o
C, 95% RH):
≤ (25
o
C, 40% RH):
> 10
8
Ω
> 10
10
Ω (Typical)
a. Using the 44474A external increment & channel closed, display off.
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