Page 2.1
RF SWITCHING MODULE 40-710
pickering
SECTION 2 - TECHNICAL DESCRIPTION
SECTION 2 - TECHNICAL DESCRIPTION
FUNCTIONAL DESCRIPTION
A functional block diagram is provided in Figure 2.1. The RF Switching 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
BNC, SMA, SMB, SMZ/Type 43, or Siemens 1.0/2.3 Version connectors. The module comprises a PCB populated
with changeover RF relays. 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.
Figure 2.1 - RF Switching Module: Functional Block Diagram
RELAY
DRIVER
U10
MODULE
CONFIGURATION
U5, U6 AND U7
PCI BRIDGE
U1
PCI BRIDGE
CONFIGURATION
U2
TERMINATING
RESISTORS
R4 TO R15
COMPACT PCI
BUS
CONNECTOR
J1
+12V
0V
RELAY COILS
RELAY CONTACTS
NO
NO
NO
NO
NC
NC
NC
NC
C
C
C
C
OUTPUT
REGISTER
U8
+5V
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