A3 RF Assembly
dac
Flexible
Reference
FPGA
100 MHz
50 MHz
1 GHz
10 MHz
10 MHz
TCXO
100 MHz
VCXO
1 – 50 MHz
f
0
f
0
FracN
Divider
∫ ∫
CXG / EXG A3 RF Assembly
N5166B, N5171B, N5172B – Option 501, 503, & 506
0.75 – 1.5 GHz
FM
J5000
X2
X2X5
÷2
÷10
X2
÷N
2.4 – 3.0 GHz
1.9 – 2.4 GHz
1.5 – 1.9 GHz
950 MHz – 1500 MHz
600 – 950 MHz
375 – 600 MHz
250 – 375 MHz
0.75 – 1.5 GHz
1.5 – 3.0 GHz
0.25 – 1.5 GHz
3.0 – 6.0 GHz
3.0 – 6.0 GHz
0.25 – 6.0 GHz
4.8 – 6.0 GHz
3.8 – 4.8 GHz
3.0 – 3.8 GHz
Detector
1.5 – 3.0 GHz
First Doubler Path
Divider Path
Second Doubler Path
J2004 J2003
Modulator Control
6.4 GHz LPF
High Band
Low Band
Het Band
350 MHz LPF 350 MHz LPF
1 GHz
1 GHz BPF
Op-Amp Band
>3.0 – 6.0 GHz
0.25 – 3.0 GHz
5 – <250 MHz
9 kHz – <5 MHz
RF Output
Synthesizer
Reference
Synthesizer Multiplier / Divider
0.25 – 6.0 GHz
Detector
2.76 GHz HPF
250 MHz
Detector
Pulse Modulator
ALC Detector
and
Temperature
Control
Limiter &
RPP Sense
Atten 1 Atten 2 Atten 3
-40 dB -10 dB -5 dB -20 dB -40 dB -10 dB -5 dB
∑
∑
dac
dac
Temp
Sense
∫
∑
Unlevel Detector
Switched HPF
Log Amp
Exponential
Reference
Temp Comp
Automatic Level Control
Pre Amp
LF
Function
Generator
Trigger
Interface
Sweep
Out
Interface
adc
adc dac
AM
FM
LF
PULSE
LF OUT
TRIG 1
TRIG 2
EXT 1
EXT 2
SWEEP OUT
RF OUT
J4000
W6 To A2 P500
ALC Control
0.25 – 6.0 GHz
Linear
20, 200, 2k Hz LPF
J5002
J5003
J303
J9000
J300
J9002
J9001
100 MHz
0 – 31.75 dB
Multiplier Atten.
5 MHz – 3.0 GHz
FM
Detector
80 MHz LPF
100 MHz
0 dBm +/-3 dB
+0 dBm +/-6 dB
10 MHz
+4 dBm +/-3 dB
1
Not used for N5171B
2
W14 to Rear Panel LO OUT with Option 012
W7 To A2 P1
1,2
W8 From A2 P2
1
ALC Control
1.005 – <1.250 GHz
Function Generator / Trigger Control
Pulse
Pulse From LF
Function Generator
J302
J301
10 MHz OUT
REF IN
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