Keysight Technologies E8257D Service Manual page 144

Synthesis Loop
A9 YIG Driver Microwave / RF Path
Trigger &
Timing
FM Driver
Control
FM
Phase Lock Coil
Interface
Sweep
Out
A28 YIG
DAC
Pretune
Oscillator
Main
2-20 GHz Coupler
Sweep
Sweep
Coil
Level (models > 20 GHz)
Generator
Control
YO Phase
Lock
3.2 to 10 GHz
3.2 to 10 GHz
A6 Frac-N
Ramp Low-Band
(Fine Tune)
Sweep
Divider and
f Lock
Filter
FM
250 kHz
Scaling
to 3.2 GHz
VCO
500-1000 MHz
A5 Sampler
(Coarse Tune)
Sampler/
YO Loop
Phase-Locked
Loop
YO Phase
Correction
Reference (Standard)
1 GHz
A7 Reference
10 MHz
Reference (Option UNR/UNX &
Instruments with serial
prefix >US4805/MY4805)
1 GHz
10 MHz
A7 Reference
A32 10 MHz
Crystal Oscillator
Option UNR/UNX
Only
A18 CPU
A19 Power Supply
A31 Motherboard
67d_ovr-all
A27 3-40 GHz
3.2 to
Doubler
3.2 to
10 GHz
A29 (models
20 GHz
20 GHz > 20 GHz)
A35 3-20 GHz
Doubler
I/Q Mod
A39
20 GHz Model
20 GHz Model
Models >20 GHz
ALC Loop
250 kHz
A8 Output to 3.2 GHz
Coupler / Detector
A38 LB A12 Pulse
Switch Filter Modulator
(Opt 1EH) (Opt UNW)
Low-Band ALC Mod
A11 Pulse/Analog
Modulation
Generator
Low-Band Pulse
Rear Panel
Stop Sweep
Z/Blank
.25-3.2 GHz
Sweep Out Carrier
Wide I
10 MHz Out
Wide Q
10 MHz In Source Module
Interface
10 MHz EFC
Baseband
Gen Ref In
Event 1 A17
Baseband
Event 2
Gererator
Pattern Trig In
Interface
Burst Gate In
GPIB
A21 Rear Panel
LAN
Interface
Auxiliary Interface
Source Settled
Trigger In
Trigger Out
Sweep Out
I/Q Ext Out
I/Q Ext Out
A22 Line Module
A26 Microwave Interface Deck
A37 20 - 44 GHz Upconverter
(models > 20 GHz)
20 - 44 GHz ALC Mod
A30 Modulator Filter
20 GHz Model
3.2 - 20 GHz ALC Mod
A23 Low-Band
A10 ALC
Detected
Low Band
3.2 - 20 GHz
Pulse
20 - 44 GHz Pulse
AM
Front Panel*
A13 I/Q Mux
Ext 1 Input
Lowband I/Q
Ext 2 Input
Highband I/Q
LF Output
RF Output
ALC Input
Pulse/Trigger
Gate Input
Pulse
I only
Video Out
Pulse Q only
Sync Out
I Q
A14 Baseband
Data
Generator
(Opt 601/602)
Data Clock
Symbol Snyc
* Note: Option 1EM moves all
connectors to the rear panel.
A34 Internal
Hard Drive (Opt 005)
120 Vac
or
240 Vac
Block Diagram for the Overall E8267D PSG Vector Signal Generator, Service Guide E8251-90359
AT1
A24 Coupler RF Output
115 dB Attenuator
250 kHz to 20 GHz,
250 kHz to 32 GHz,
250 kHz to 45 GHz
A25 Detector
Detected
High Band
A27
A34
A17
A20
(Not
Visible)
A19
A32 A14
A18 A13
Photograph: 45 Ghz Model (Option 544)
or
A39
A12
A25 A24
A23 AT1
A26
A11 A9 A8 A7 A6 A5
A10
A38