Specifications
2-5 FRONT END RF
COMPONENTS
The receiver demodulates the signals for processing by the CPU. Various
RF components are used to configure the different options.
Test Port
Connectors
Five configurations of the RF connectors are offered:
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Test Port Connector N-Male (B45261)
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Test Port Connector N-Female (B45259)
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Test Port Connector GPC-7 (B47086)
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Test Port Connector 3.5 mm Female (B47087)
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Test Port Connector 3.5 mm Male (B47088)
Switched Frequency
Doubler Module
The Switched Doubler Module is used to multiply the RF source fre
-
quency by two to provide the 3000 to 6000 MHz output. The RF input
level is a nominal 20 to 30 dBm, providing an output of +20 dBm. Har
-
monics of the doubled output are better than –30 dBc.
The frequency doubler requires +12 volts at 0.5 amperes maximum,
+5 volts at 0.2 amperes maximum, and –13.5 volts (floating) at
0.2 amperes maximum.
Three switched filters are used to reduce the output harmonics and are
controlled by two logic lines DB0 and DB1.
Switched Frequency
Tripler Module
The Switched Tripler Module is used to multiply the RF source frequency
by three to provide the 3000 to 9000 MHz. The RF input level is a nomi-
nal 20 to 30 dBm, providing an output of +20 dBm. Harmonics of the
tripled output are better than –25 dBc.
The frequency tripler requires +12 volts at 0.5 amperes maximum,
+5 volts at 0.2 amperes maximum, and –13.5 volts (floating) at
0.2 amperes maximum.
Five switched filters are used to reduce the output harmonics and are
controlled by three logic lines TR0, TR1, and TR2.
Auto-Reversing
Module
The Auto-Reversing Module provides three output signal paths:
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ALC leveling coupler output (FT1)
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Transfer switch outputs (J1 and J2)
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Reference signal sampling coupler output (J3)
The input signal port is J4. The input signal is sampled by the ALC level
-
ing coupler and converted to a DC signal that is used by the ALC circuits
located in the Source Module. In the forward sweep direction, the input
signal from J4 is routed to the Port 1 Module via J1 by the internal trans
-
fer switch. This provides the forward stimulus signal for the DUT. In the
reverse sweep direction, the output signal is routed via J2 to the Port 2
Module by the internal transfer switch. This provides the reversing stim
-
ulus signal for the DUT.
THEORY OF OPERATION FRONT END RF COMPONENTS
MS462XX MM 2-15