Programming instructions
Specifications 17
Agilent 44478A/B
1.3GHz MUX
Modules
The specifications of the Agilent 44478A/B are listed in the table below.
Specifications in the table describe the modules’ warranted performance
over the temperature range 0 to 55
o
C. Information marked by the “Typical”
designation is helpful in applying the modules, but is non-warranted
information.
ITEMS SPECIFICATIONS
INPUT CHARACTERISTICS
Total Channels: dual 4
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 Agilent 44478A:
Agilent 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)
AC ISOLATION / PERFORMANCE (Z
L
= Z
S
= 50Ω or 75Ω)
b
Insertion Loss
≤ 40
o
C, 95% RH
≤ 10 MHz:
≤ 100 MHz:
≤ 500 MHz:
≤ 1.3 GHz:
< 0.3 dB
< 0.7 dB
< 1.5 dB
< 3.0 dB
≤ 25
o
C, 40% RH (Typical)
≤ 10 MHz:
≤ 100 MHz:
≤ 500 MHz:
≤ 1.3 GHz:
< 0.2 dB
< 0.5 dB
< 1.1 dB
< 1.9 dB
Crosstalk
c
Channel-Channel, Channel-Common
(with 1 channel closed)
≤ 10 MHz:
≤ 100 MHz:
≤ 500 MHz:
≤ 1.3 GHz:
< -90 dB
< -80 dB
< -65 dB
< -55 dB
Group-Group, Module-Module
≤ 10 MHz:
≤ 100 MHz:
≤ 500 MHz:
≤ 1.3 GHz:
< -90 dB
< -80 dB
< -70 dB
< -60 dB
VSWR ≤ 10 MHz:
≤ 100 MHz:
≤ 500 MHz:
≤ 1.3 GHz:
< 1.20
< 1.25
< 1.35
< 1.55
Capacitance Center-Center:
Center-Shield:
< 0.006 pF
< 60 pF
Rise Time: < 300 ps
Signal Delay: < 3 ns (channel matched to ± 50 ps)
a. Using Agilent 44474A external increment & channel closed, display off.
b. Z
L
= Z
S
= 50 Ω applies for Agilent 44478A and Z
L
= Z
S
= 75 Ω applies for Agilent 44478B.
c. The CrossTalk specifications assume 50 Ω termination for 44478A and 75 Ω termination for 44478B. If all channels unterminated, derate specification by 6 dB.