Programming instructions

Specifications 13
Agilent 44472A VHF
Switch Module
Agilent 44472A VHF Switch module contains 14 latching relays, which
provides dual independent 4-to-1 coaxial MUXs. The specifications are
listed in the table below.
ITEMS SPECIFICATIONS
INPUT CHARACTERISTICS
Total Channels: dual 4
Connector Type: BNC (x10)
Maximum Voltage Center-Center or Center-Low:
Low-Chassis or Low-Low:
250 V dc, 30 V ac rms or 42 V ac peak
42 V dc
Maximum Current Per Channel: 30 mA dc, 300 mA ac rms
Thermal Offset Per Channel: < 15 µV
Characteristic Impedance: 50 Ω
Initial Closed Channel Resistance: < 1 Ω
Relay Life Dry Load of < 300 mA & < 10 V:
Maximum Rated Load:
10
8
10
5
Maximum Scan Rate
a
:
43 Chans/sec
DC ISOLATION
Between Any Two Points
< (40
o
C, 95% RH): > 10
7
Ω
AC ISOLATION / PERFORMANCE
b
Capacitance Center-Center, Center-Common:
Center-Low:
Low-Chassis:
< 0.002 pF
< 70 pF
< 0.20 µF
Rise Time: < 0.7 ns
Signal Delay: < 2.5 ns (channel match < 90 ps)
Insertion Loss (with 50Ω termination) 30 MHz:
100 MHz:
300 MHz:
< 0.50 dB
< 0.75 dB
< 1.25 dB
Crosstalk Within a Group
(Channel-Channel or Channel-Common,
with 50Ω termination)
30 MHz:
100 MHz:
300 MHz:
< -100 dB
< -85 dB
< -65 dB
Crosstalk Group to Group
(with 50Ω termination)
30 MHz:
100 MHz:
300 MHz:
< -85 dB
< -85 dB
< -50 dB
VSWR (with 50 Ω termination) 30 MHz:
100 MHz:
300 MHz:
< 1.06
< 1.12
< 1.43
a. Using Agilent 44474A external increment & channel closed, display off.
b. When all channels in a group are opened, the last channel opened (or channel 00 or 13 following a group RESET) has
channel-common isolation of > 80 dB @ 30 MHz, > 60 dB @ 100 MHz, and > 40 dB @ 300 MHz.