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FUNCTIONAL DESCRIPTION
A functional block diagram is provided in Figure 2.1. The RF Multiplexer Module is powered by +12V and +5V inputs
via Compact PCI connector J1. The interface to the user test equipment is via the front panel mounted SMB or SMA
connectors. The module comprises a PCB populated with changeover RF relays configured as tree multiplexers.
The relays are energised via control signals from relay driver U10. The relay driver is addressed by PCI bridge U1,
via output register U8, to output the required signal. PCI Bridge U1 is configured by EEPROM U2.
RELAY COILS
RELAY CONTACTS
40-749
4, 4
RL1
4, 3
RL2
4, 2
RL6
4, 1
3, 4
RL10
3, 3
RL5
3, 2
RL4
3, 1
2, 4
RL7
2, 3
RL12
2, 2
RL13
2, 1
1, 4
RL16
1, 3
RL15
1, 2
RL11
1, 1
Figure 2.1 - RF Multiplexer Module: Functional Block Diagram
SECTION 2 - TECHNICAL DESCRIPTION
OUTPUT
RELAY
REGISTER
DRIVER
U8
U10
RELAY CONTACTS
2, 8
RL1
2, 7
COM4
RL2
2,6
RL6
2, 5
2, 4
RL10
2, 3
RL5
COM3
2, 2
RL4
2, 1
1, 8
RL7
1, 7
COM2
RL12
1, 6
RL13
1, 5
1, 4
RL16
1, 3
COM1
RL15
1, 2
RL11
1, 1
RF MULTIPLEXER MODULES 40-747 / 748 / 749
SECTION 2 - TECHNICAL DESCRIPTION
MODULE
CONFIGURATION
U5, U6 AND U7
PCI BRIDGE
U1
RELAY CONTACTS
40-748
16
RL1
15
14
RL6
13
COM2
RL3
12
RL10
11
10
RL4
9
8
RL7
7
6
RL13
5
COM1
RL14
4
RL16
3
2
RL11
1
COMPACT PCI
BUS
CONNECTOR
J1
TERMINATING
RESISTORS
R4 TO R15
+12V
+5V
0V
PCI BRIDGE
CONFIGURATION
U2
RL2
RL3
RL5
RL9
RL12
RL14
RL15
40-747
COM
RL8
Page 2.1
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