Specifications

CXR-G SWITCH MODULES
Fig. 4
CXR/8x1-G
This module is a bidirectional 8x1 configuration as shown in
Fig. 4 and is available for both 50 or 75 ohm impedance sig-
nals.
50 ohm models are available with either SMA or BNC connec-
tors.
Bandpass with SMA connectors is 1.6 GHz (-3dB).
Isolation is -50dB at 1 GHz.
Bandpass with BNC connectors is 1.0 GHz (-3dB).
Isolation is -50dB at 1 GHz.
75 ohm models are available with either SMB or BNC connec-
tors.
Bandpass is 1.2 GHz (-3dB) and isolation is -50dB at 1 GHz.
These modules are designed with Type G relays arranged in a tree configuration as shown in Figs. 4 thru
6 with on board logic which selects the appropriate relays to connect the selected input to the common.
Only one input can be switched to one output and in the unenergized state input #0 is connected to the
common except the terminated modules which have an open condition.
The Modules are available with 50 ohm or 75 ohm characteristic impedance and with SMA, SMB or BNC
connectors.
Combinations of these modules can be assembled to form larger multiplexers or matrices.
CXR/4x1-G
This module is a bidirectional 4x1 configuration using connec-
tors 0 thru 3 of Fig. 4.
It is available with the same connectors and has the same band-
pass and isolation as the 8x1 module.
CXR/8x1-GT TERMINATED MODULE
This module switches any one of eight 50 or 75 ohm terminated
coaxial inputs to one output as shown in Fig. 6. Switching any
input removes the termination from that input and connects it to
the common.
50 ohm models are available with either SMA or BNC connec-
tors.
Bandpass with SMA connectors is 1.5 GHz (-3dB).
Isolation is -60dB at 1 GHz.
Bandpass with BNC connectors is 1.0 GHz (-3dB).
Isolation is -60dB at 1 GHz.
75 ohm models are available with either SMB or BNC connec-
tors.
Bandpass is 1.0 GHz (-3dB) and isolation is -60dB at 1 GHz.
CXR/4x1-GT TERMINATED MODULE
This module switches any one of four coaxial inputs to com-
mon using inputs 0 thru 3 of Fig. 6.
It is available with the same connectors and has the same band-
pass and isolation as the 8x1 module.
Fig. 6
021 3 4567COM
02134567COM
Fig. 5
CXR/4x2-G
This module switches any two of 4 coaxial ports to the two com-
mons as shown in Fig. 5, and is available for both 50 or 75 ohm
impedance signals.
50 ohm modules are available with SMA or BNC connectors.
Bandpass with SMA connectors is 1.2 GHz (-3dB)
Isolation is -50dB at 1GHz.
75 ohm modules are available with SMB or BNC connectors.
Bandpass is 800 MHz (-3dB).
Isolation is -50dB at 1 GHz.
021310
CXR/1x8-PD POWER DIVIDER MODULE
This module is a 1x8 power divider intended for use between 5
MHz and 500 MHz. The module has a unity gain amplifier so
that all 8 outputs maintain the signal input level (+/- 2 dB) in the
given frequency range. The module is available with SMA or
BNC connectors. A schematic is shown in Fig. 7.
1
2
3
4
5
6
7
8
Input 1x8
Power
Divider
Amp
Fig. 7
CXAR-3