Keysight Technologies Option 503 Service Manual page 339

OPTION 543, 544, 550 mmW PXA RF BLOCK DIAGRAM
(Highband Path #3 - Input signals 34.5 to 50 GHz)
A9 INPUT A10 INPUT
RF
ATTENUATOR A ATTENUATOR B
Input
2 dB 2 dB 6 dB 20 dB 30 dB 10 dB
W2
W4
33 dBm
W3
Cal Signal
J
From A16 Reference
50 MHz, 25 dBm or
4.8 GHz, 28 dBm
A20 YTO
YTO Main and
3.8 - 8.73 GHz
FM coil current
drive from A14
YTO
Driver
W23
blockpxaopt_rf_high3
SWITCH 4
(Option MPB)
1
SWITCH 3
(Option LNP)
4
W51 W59
1 2
W52 W54
4 3
A11 LOWBAND
J4 A13A1 FRONT END
SWITCH
3.6 GHz - 50 GHz
J3
J9
44 dBm
40 GHz
J1
61 dBm
(if Option MPB
Preamp
and bypassed,
+30 dB
54 dBm)
J2
3 Hz - 3.6 GHz Path
4 GHz
Mixer #1
W8
Electronic Attenuator
J2
0 - 24 dB
Preamp
+20 dB
LO
DISTRIBUTION
ALIGNMENT
J4 THERMOMETER
W20
5172.5 MHz
+10 dBm
J5 J3 J6
W33
ECAL In
W21
SYNTH OUT
A13A2 SWITCHED FILTER
To A14
5172.5 MHz
Synthesizer
+10 dBm
IF IN 3
J2
5122.5 MHz
34 dBm
W19
Aux LO In J6
5172.5 MHz
+9 dBm
J2 (Opt EXM)
W29 (Opt EXM)
EXT
MIXER
W62
2
W61
3
A12 YTF
W60
Preselector
Mixer #3
17 to 34.5 GHz
J7
W16
IF OUT
322.5 MHz
34.4 to 50 GHz
36 dBm
Mixer #4
3.6 to 17.1 GHz
Mixer #2
J8 1st LO OUT
J13 EXT IF OUT
J12
2nd LO
14 GHz 4800 MHz
LPF +10 dBm
W18
J1
from A16
Reference Bd
X2
17 GHz
LPF
J10 J11
IF OUT IF IN 5122.5 MHz
33 dBm
W48 W49
160 MHz BPF
5.1 GHz
W58
BP F1
BP F2
IF
J3 J4
J5
Out
IQ
Modulator
W28
IM
J1
Generator
W17 (Opt EXM)
A15 FRONT END CONTROLLER
J800
W5
ATTENUATOR CONTROL
J802
W55
LOW BAND SWITCH BYPASS CONTROL
J700
W7
LOW BAND SWITCH CONTROL
J801
W12
PRESELECTOR BYPASS CONTROL
J300
PRESELECTOR DRIVER CONTROL
W11
IF In
J902
1
0 to 31 dB
Ext
IF In 1 dB
BIAS
W30
TEE
J903
(Opt EXM)
+10 to
260 MHz - 400 MHz
DAC 10 mA
VCO
MIXER BIAS, AMP BIAS,
W22
PREAMP BIAS, E-ATTEN CONTROL,
SWITCH CONTROL, 1st LO POWER OPTIMIZATION,
J102
YTF TUNE RAMP
SWITCHED FILTER CONTROL
J1300
FOOTNOTES
1
IF OUT from A13A1J7
NOTE: Power levels based on these settings:
IF Path IF Freq.
Mode: Spectrum Analyzer unless specified differently
10 MHz 322.5 MHz Input Signal 40 GHz, 25 dBm
Center Frequency 40 GHz
322.5 MHz
25 MHz
Span 0 Hz
250 MHz
40 MHz
Input Attenuation 10 dB
300 MHz
140 MHz Preamp OFF
Auto Align OFF after initial Auto Align
160 MHz 300 MHz
2 AUX IF OUT is only available Signal levels above 3 GHz include cable loss
with Option CR3, CRP, and ALV of measuring system
3 See Low Band troubleshooting
section warning message
OPTION 543, 544, 550 mmW PXA
RF (Highband Path #3) BLOCK DIAGRAM
J302
W25
J900
to AIF
322.5 MHz
36 dBm
W26
Option B40
to Digital IF
Mode = I/Q Analyzer
IF Path 40 MHz
J901
250 MHz, 38 dBm
or
W41
Burst
Option B1X
Trigger
to WB AIF
DAC
Mode = I/Q Analyzer
IF Path 140 MHz
300 MHz, 38 dBm
LOG
DET
AUX 1,2
IF OUT
W27
J1100
to rear
panel
120 MHz Option CR3
LPF 2nd IF
32 dBm
SWEEP
RAMP
J301