R&S ZVA24, Руководство по обслуживанию

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R&S ZVA Repairs
1177.5333.02 3.9 E-11
Range Basic frequency range
from synthesizer
Doubler 1 Frequency Doubler 2 Output frequency
1 10 MHz to 8.0 GHz --- 10 MHz to 8.0 GHz --- 10 MHz to 8.0 GHz
2 4 GHz to 5.05 GHz x 8.0 GHz to 10.1 GHz --- 8.0 GHz to 10.1 GHz
3 5.05 GHz to 6.35 GHz x 10.1 GHz to 12.7 GHz --- 10.1 GHz to 12.7 GHz
4 6.35 GHz to 8.0 GHz x 12.7 GHz to 16.0 GHz --- 12.7 GHz to 16.0 GHz
5 4.0 GHz to 5.0 GHz x 8.0 GHz to 10.0 GHz x 16.0 GHz to 20 GHz
6 5.0 GHz to 6.0 GHz x 10.0 GHz to 12.0 GHz x 20.0 GHz to 24 GHz
Doubler44
The doubler contains a frequency doubler for the range 24 GHz to 44 GHz, a switchable filter unit and a
broadband amplifier for the range 10 MHz to 44 GHz.
Range Frequency range from
driver24
Doubler Output frequency
1 10 MHz to 24.0 GHz --- 10 MHz to 24.0 GHz
2 12.0 GHz to 14.9 GHz x 24.0 GHz to 29.8 GHz
3 14.9 GHz to 18.5 GHz x 29.8 GHz to 37.0 GHz
4 18.5 GHz to 22.0 GHz x 37.0 GHz to 44.0 GHz
Receiver44
The receiver section has two channels (measurement channel and reference channel). The
measurement channel contains a buffer amplifier, two mixers for each of the frequency ranges 10 MHz
to 2.5 GHz and 2.5 GHz to 44 GHz, LO doublers, LO amplifiers and an IF amplifier. The reference
channel is identical to the measurement channel without the buffer amplifier. In the mixers, the input
signal is directly converted to the IF range, approx. 15 to 21 MHz. In the frequency range 10 MHz to 24
GHz the mixers are used as basic wave mixers (IF = LO
– RF). In the range 24 GHz to 44 GHz the
mixer for the upper frequency range works as a harmonic mixer (IF = 3LO
– RF).
The LO signal section contains a frequency doubler for the range 8 GHz to 16 GHz, a switchable filter
unit, a second frequency doubler with filter for the range 16 GHz to 24 GHz and a broadband amplifier
for the frequency range 30 MHz to 24 GHz.
Range Basic frequency range
from synthesizer
Doubler 1 Frequency Doubler 2 Output frequency
1 30 MHz to 8.0 GHz --- 30 MHz to 8.0 GHz --- 30 MHz to 8.0 GHz
2 4 GHz to 8.0 GHz x 8.0 GHz to 16.0 GHz --- 8.0 GHz to 16.0 GHz
3 4.0 GHz to 6.0 GHz x 8.0 GHz to 12.0 GHz --- 16.0 GHz to 24.0 GHz
Each of the reflectometers RM1 and RM2 contain two voltage-controlled fans to perform optimum
cooling.