Agilent Technologies E4448A Service Guide

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
14
7
C
C
1
1
2
2
10
OPTION 123 (E4440A, 43A, 45A only)
SWITCHABLE MICROWAVE PRESELECTOR BYPASS BLOCK DIAGRAM
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)
SW1
(OPTION 123)
SW2
(OPTION 123)
W8
W47
(97)
W7
W20
W29
W30
W26
W53
W80
W81
YTF Coil
Driver
Mixer Control
Odd/Even IF
W87
W84
W83
W88
W86
10
W38
W85
W82
LO 3-7 GHz
W31
A13 FRONT END DRIVER
ATTENUATOR
CONTROL
1/N
COUNTER
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.
PRE-SEL OUT
(REAR PANEL)
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
W28
+32v
W25
W49
TO REAR PANEL
28v (SWITCHED)
W24
5 GHz, -25 dBm
block_123_40_43_45
5 GHz, -35 dBm
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
Mode - Spectrum Analysis
Center Frequency - 5 GHz
Span - 0 Hz.
Input Attenuation - 10 dB
Microwave Preselector - Off
Note - POWER LEVELS BASED
ON THESE SETTINGS:

Agilent Technologies E4448A Specifications

General

Brand	Agilent Technologies
Model	E4448A
Category	Measuring Instruments
Language	English