Agilent Technologies PSA Series Service Manual page 219

E4446A/E4447A/E4448A OVERALL BLOCK DIAGRAM
A19 A19 FL1
27 GHz LPF
A14 INPUT ATTENUATOR A
Cable
SBTX -35dBm
@ 50MHz
-25 dBm
W7
3 Hz - 26.8 GHz -38dBm
@ 5GHz
RF-INPUT
DC COUPLED > 26.8 GHz
3 Hz to fmax Preselector
W20
SBTX LB
A Switch
6 dB 2 dB 2 dB
Calibrator Signal
50 MHz CW, -25 dBm
LO1
W29
50W
W68
fmax: E4446A = 44 GHz W34
E4447A = 42.98 GHz
A15 INPUT ATTENUATOR B 20
E4448A = 50 MHz
W8 A29
LOMA/SBTX Driver
10 dB 30 dB 20 dB W33
J1 J9
24
14 J2 J10
W30 20
10 10
W69
W47
PRE-SEL OUT
W70
(REAR PANEL)
J5 J6 J14 J4 J3 J11
A13 FRONT END DRIVER
10 kHz ELECTRONIC J13 W53
ATTENUATOR
10 Mhz ATTENUATOR
16 CONTROL
REF.
CONTROL
1/N 1/N COUNTER BIT
W71
DAC
N=1-2 N=1-2 32 32 UNPRESELECTED YTO
J7 W25
MIXER CONTROL
MAIN COIL
DELAY BIAS/CTRL FM COIL A18
10
COMP.
PASS THRU
YTF TUNE RAMP GENERATOR THERMOMETER
FROM LO VIA
10 kHz
N=1-2 48 MOTHERBOARD
16
COUNTER BIT
1/N TO 3rd CONVERTER
DAC VIA MOTHERBOARD
+32v
VARIABLE GAIN RAMP GENERATOR
FIFA
LOWBAND MODULE 28v
PREAMP
REGULATOR
BIAS/CONTROL BIAS/CTRL BIAS/CTRL
J8 J9 J10
W49 W58
TO REAR PANEL
W31 B F
20 20 28v (SWITCHED)
A12 LO SYNTHESIZER
J1 A12 A1 SYNTHESIZER
3-7 GHz
A12 A2 SAMPLING OSCILLATOR DAUGHTER BD.
614-718 MHz
N*600/256+600MHz
J1 J3
F S DUAL PATH LOOP
¦
A12W1
SINGLE
SAMPLER IF LOOP
OFFSET SAMPLING
PATH
OSC. PLL
90 MHz
R
LPF 1/8
375-875 MHz
RATE L
MULTIPLIER
NARROW SPAN WIDE SPAN
N=6-63
50-70 MHz
(DUAL LOOP) (SINGLE LOOP)
J3
TESSERA
MODULUS
J4
A12W2
1200MHz CONTROL
NARROW SPAN
X2 PAREN
PRETUNE GAIN
WIDE SPAN R=5, 6, 7 (DUAL LOOP)
129 (SINGLE LOOP) CONTROL
F
1/R
(600 MHz FROM MOTHERBOARD) ¦
sn51a
A27 ELECTRONIC ATTENUATOR
- 36 dBm OPTION B7J
RYTHM 3 Hz - 2.85 GHz W52
LOW BAND
YTF
W51
0-40 dB IN 1dB STEPS
Odd/Even IF
FL1
3 GHz, LPF
W17
2.85 - 26.8 GHz
HIGH BAND
W48
LO 3-7 GHz
MM BAND
3.92 GHz
A22 LOWBAND PREAMP
-48 dBm
OPTION 1DS
+30 dBm
W38 Coax
Switch
A30 FIFA
W55 W49
3.9214 GHz
+17 -32 dBm
B
W56
F
CF= 3.9214 GHz
BW= 40MHz
2 dB W54
W42 AT1 W43
A20 LOWBAND
A21 FREQ. EXT. LO MULTIPLIER/AMP (FELOMA)
(5087-7126)
FIRST MIXER
W50
3Hz-3GHz
J2
X2
+13 dBm J1
6-14 GHz -36 dBm
W35
J1 J3
+14 dBm
+12 SW1
LIMITER
3-7 GHz YTO
50
W41 1ST LO LO
J4 3-7 GHz J2 BIAS-ADJ.
+ 14 dBm
U1
J5 J6
W46 W45 Front Panel
3-7 GHz
W24 (1st LO Output 3-7 GHz
-9 dBm
+ 15 dBm Nominal)
(Option AYZ)
J8
26
PRETUNE A11 REFERENCE BOARD
GENERATOR
100 MHz PLL
UNLOCK DETECTOR
W22
DAC
(70)
100 MHz
P1
VCO
¦
REAR PANEL
1/R
F
EXT. REF INPUT
LOOP GAIN
1MHz TO 30MHz
DELAY
1/F,N
COMP
PAREN
1 / 2
FRAC-N
MODULUS
CONTROL
MAIN COIL
FILTER
REAR PANEL 1 / 5
TO FE 10MHz REF OUT
EXT. REF OUT OFF
MAIN COIL DRIVER +5dBm
P2
VIA
FM COIL MOTHERBOARD.
W21
(90)
A10 THIRD CONVERTER
EXT. MIXER BIAS
W44
J3
Front Panel
BIAS T
IF IN
(321.4 MHz Nominal
-20 dBm, Max)
W17 (Option AYZ) 0-30 dB
(10) 2 dB/STEP
14dB
J1
321.4 MHz
-50 dBm
14dB
321.4 MHz J2
-44 dBm
-.5 TO
3 V
VARIABLE GAIN
RAMP FROM FE
FL2
DRIVER VIA MOTHERBOARD
BPF
50 MHz CALIBRATOR ALC
50 MHz
FROM
W39
REFERENCE
BOARD VIA
MOTHERBOARD
3.9214 GHz
-30 dBm
-33 dBm
OVERLOAD J3 J4
DETECTOR
3dB 2dB SECOND
MIXER 400 MHz W18
THERMOMETER
9dB (7)
J7
1ST IF AMP
RING RESONATOR
LO BIAS TO INPUT ATTENUA TOR
ADJ.
J6 3.6 GHz
L.O. AUX OUT
IF BIAS -8 dBm
NULLING
2ND LO
POWER
DETECTOR
7.2 GHz
NOTCH
10dB 10dB 10dB W15
J5
2ND LO
6dB
2ND LO
3.6 GHz, +1dBm
GAIN ADJ. CF=3.6 GHz
INPUT SIGNAL < 5GHz
A9 2ND LO BOARD J10
300 MHz 3RD LO,
TO 3RD CONVERTER
C
TEMP. SENSE
3.6 GHz PMYO 5dB
300 MHz
P4 W16 MAIN COIL
(4)
300 MHz FM
600 MHz COIL
P3 600 MHz UNLOCK
X3 J1
INDICATOR
X2 +11 dBm
FAN CONTROL
SAW FILTER
50 MHz CAL.
DOUBLER BIAS TRIG TRIG
S
50 MHz CAL 1 2
DETECTOR
(TO 3RD CONVERTER) OUT OUT
TO SYNTH BD. VIA
MOTHERBOARD
CPU J12
J11
10 MHz FRONT END DRIVER
DIST. LO SYNTH
ANALOG IF
W13 W14
(20) (30)
OPTIONS
TO REAR PANEL
W19
NOTE: J4 and W19 321.4 MHz, -30 dBm
not present on E4447A AUX OUTPUT TO REAR PANEL
(E4446A/E4448A)
J4
3 dB
14 dB
SYSTEM
AUX 321.4 IF
14dB VARIABLE
200 MHz OUT AMP
GAIN
321.4 MHz
278.6 NOTCH BW=10 MHz 3RD MIXER LPF
14 dB
J5
I
R
12dB
L
PIN TUNE 21.4 MHz
DIODE
DACS 300 MHz
DRIVE
+21 dBm
321.4 MHz
LINEARIZATION
CAL SIGNAL 5.1 dB
CIRCUIT
7.5 MHz
CAL SIGNAL
MUX 5.5 dB
3RD LO AMPLIFIERS
9.6 dB
I 2.1dB
DET. 300 MHz, +7 dBm
L
LEVEL 21.4 MHz
300 MHz
DAC
AMP
LEVELING LOOP CAL-OSC, LOW
FROM AIF VIA
300 MHz, +11dBm
MOTHERBOARD
CAL-OSC, HIGH FROM REFERENCE BD.
J7 J6 VIA MOTHERBOARD
50 MHz
A D C
CALIBRATOR
W20
(50)
A8 ANALOG IF
PREFILTERS. BW = 2.5 X RBW
LC BW = 200 kHz TO 7.5 MHz
21.4 MHz AUTO RANGE
XTAL BW = 2.5 kHZ TO 200 kHz PLL
TO DIF VIA MOTHERBOARD
2 MHz
+7dB
W11 LC
4TH MIXER
(3) 3 dB
J13
R I
+6
21.4 MHz, -30 dBm
XTAL L
-3dB
AIF
ANTI ALIAS
MAIN
12.5 MHz
FILTER
-33 dB INPUT GAIN
BW = 10 MHz
SIGNAL 30 GHz
POWER
10 MHz REF
DETECTOR PLL
BUFFER
28.9 MHz
244 kHz
4TH LO
FM RATE = 10 Hz
PK DET.
BURST POWER SUPPLY
-1 SWITCHING
TV FILTER
REFERENCE
BURST TRIGGER THRESHOLD
VERT
TV
AGC HORIZ
TRIGGER CALIBRATION
ODD/EVEN
REAR PANEL ECL
FREQUENCY
VIDEO
EXT. TRIG . GENERATOR
W12 INVERT
(6) 21.4 MHz
P4
10MHz REF PLL
INTERP. CAL
TRIG 2 INTERPOLATOR
LEV CAL OSC GATE ARM
CAL TRIGGER
W1 LINE GATE TRIG TO DIF VIA
TRIGGER
(5)
BURST MUX SWEEP ARM MOTHERBOARD
P1 TV SWEEP TRIG 30 MHz
3
TRIG 1
PLL
FRONT PANEL LEV
EXT. TRIG .
Note -
POWER LEVELS BASED ON THESE SETTINGS:
Center Frequency - 50 MHz for Low band, 5 GHz for High band,
30 GHz for mm band. Preselector Centering
Required for Input Signals >3 GHz.
Span - 0 Hz.
Input Attenuation - 10 dB
Preamp - Off
Electronic Attenuator - 0 dB
Auto Align Turned Off After Inital Auto Align
A7 DIGITAL IF
TRIG1,TRIG2
TO 2ND LO BD.
TRIGGER INPUTS
TP5 FROM AIF 2
AUTO RANGE
ATTEN: 0 TO 24 dB
4 PCI BUS
6 dB STEPS
GAIN (TO CPU BUS)
P7
14 LOOK
DIGITAL IF
BIT UP 32
ASIC
50 W 6 dB 18 dB ADC
ADC
DITHER
OFFSET GENERATOR
2
6 dB
RANGING
RULES 16
SERIAL BUS
RANGE
INTERFACE
DETECTION
30 MHz
TIMING
21.4 MHz
AUTORANGE
J9
P62
W10
(8)
P2
+6
-6dB 7.5 MHz,
A5 POWER SUPPLY
-24 dBm
+5.2 V
-5.2 V
+9 V
+15 V
±5% FM DEVIATION
-15 V
TO POWER SUPPLY
+32 V
VIA MOTHERBOARD
CAL OSC TRIGGER
CAL OSC HI
D
TO 3RD CONVERTER
CAL OSC LO
SWITCHING LINE POWER SUPPLY
INTERP
FREQ REF. TRIGGER. SHUTDOWN
CAL
TRIGGER
J9
ECL P55 SAMPLE RATE HI
J9 SAMPLE RATE LO
P54
E4446A/E4447A/E4448A OVERALL BLOCK DIAGRAM
March 28, 2008