Agilent Technologies E4445A Service Guide

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

Agilent Technologies E4445A Specifications

General

Brand	Agilent Technologies
Model	E4445A
Category	Measuring Instruments
Language	English