Agilent Technologies E4448A Service Guide

E4440A/E4443A/E4445A OPTION 110 AND 123 BLOCK DIAGRAM
E4440A/E4443A/E4445A
OPTION 110 AND 123 BLOCK DIAGRAM
February 02, 2006
block_110_123_40_43_45
Mode: Spectrum Analysis
Center Frequency: 5 GHz
Span: 0 Hz.
Input Attenuation - 10 dB (Attenuator switches to 40 dB
when Preamp is enabled)
Note 1. Measured with Preamp On and Preselectors On
Note 2. Measured with Preamp Off and Preselectors Off
Note - POWER LEVELS BASED ON THESE SETTINGS:
W51
(5.3214 GHz, 14 dBm 3 dB)±
5.3214 GHz, 12-17 dBm
[3.9714 GHz
14.5 dBm ± 1 dB]
A18
3-7 GHz YTO
W35
A21 SLODA
LO DISTRIBUTION AMPLIFIER
INT. SENSE
HIGH/LOW
HI
LO
EXT. SENSE
PIN ATTEN.
W41
3-7 GHz
-3 TO -8 dBm
FIRST LO OUT
SAMPLER
OUT
To A20 Lowband
J1
YTF
7
C
C
1
1
2
2
10
A14 INPUT ATTENUATOR A
RF-INPUT
DC COUPLED 3Hz to f max
AC COUPLED 20MHz to f max
(Coupling not automatic)
f max:
E4440A= 26.5 GHz
E4445A= 13.2 GHz
E4443A= 6.7 GHz
Calibrator Signal
50 MHz CW, -25 dBm
2 dB 2 dB 10 dB 6 dB 20 dB 30 dB
A15 INPUT ATTENUATOR B
A19 RYTHM
A34 MIXER (OPTION 123)
FL4
SW1
(OPTION 123)
SW2
(OPTION 123)
W8
W47
(97)
W85
W7
W20
W29
W30
W26
W53
W109
W112
W81
YTF Coil
Driver
Mixer Control
Odd/Even IF
W87
W84
W83
W88
W86
10
W38
W115
LO 3-7 GHz
W31
A13 FRONT END DRIVER
ATTENUATOR
CONTROL
1/N
COUNTER
Pre Sel Out
(rear panel)
16
BIT
DAC
DELAY
COMP.
RYTHM
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.
UNPRESELECTED
MIXER CONTROL
J5 J6 J3 J4 J11
ELECTRONIC
ATTENUATOR
CONTROL
LOWBAND
BIAS/CONTROL
OPTION 1DS
PREAMP
BIAS/CTRL
28v
REGULATOR
GATE BIAS
HI/LO SWITCH
BIAS
J8 J9
LO
HB Out
321.4 MHz
321.4 MHz
-49 dBm
(preselector On)
321.4 MHz
-51 dBm
SLODA
LEVELING LOOP
J13
J7
J2
10
10
THERMOMETER
FROM LO VIA
MOTHERBOARD
YTO
MAIN COIL
FM COIL
PASS THRU
10
14
W28
+32v
W25
TO REAR PANEL
28v (SWITCHED)
W24
5 GHz, -25 dBm
5 GHz
5 GHz
321.4 MHz to
A10 3rd Converter J1
Front Panel
RF Input Frequency
To Lowband
5.3214 GHz
+ 15 dBm
Top
Switch
Bottom Switch
SW6
A36 PREAMP
(OPT 110)
AT4
W113
W114
W106
W111
4 dB
10
9
Note 1:
-65 dBm
Note 2:
-35 dBm
Note 1:
-39 dBm
Note 1:
-39 dBm
Note 2:
-35 dBm
No cable
direct
connect
A38 OPTION DRIVER
SWITCH CONTROL
CONTROL
PREAMP CONTROL
J3
P1
3 GHz

Agilent Technologies E4448A Specifications

General

Brand	Agilent Technologies
Model	E4448A
Category	Measuring Instruments
Language	English