J5
LOCAL
DIGITAL
BUS
POWER
BUS
m3blk_014
FROM A13
J6
RI
L
ALC
ALC
2
1.5 GHz
B2-26
J106
J101
B0-1
2.4 GHz
3 GHz
1 GHz
750 MHz
A8 FRACTIONAL-N SYNTHESIZER
414
417415
413 412
1.5 - 3.0 GHz
VCO
2250 MHz
VCO
418
Level
Adjust
B3-26
B2
B0-1
416
LOCAL
DIGITAL BUS
POWER
BUS
5 MHz REF J105
FRAC-N
LOGIC
FRAC-N
LOGIC
1
B0-1
B2-26
BIAS/RF
LOMA12
X2
5.0 - 6.0 GHz
3.0 - 4.0 GHz
4.0 - 5.0 GHz
B0-3
B4-26
A17 L.O. MULTIPLIER/AMPLIFIER 12 (LOMA 12)
2
X2X2
A18 MULTIPLIER/AMPLIFIER 24 (MA24)
B0-10, 16 - 19
B11 - 15, 20 - 26
0.01-24
GHz
13 GHz
X2
3
W11
W12
W13
W14
A20 L.O.
LODA)
DISTRIBUTION
ASSY (
A19 SPLITTER
MA 24
FROM
A16
13 GHz
10.0-12.8 GHz
12.8 - 16.0 GHz
15 GHz
16.0 - 20.0 GHz
0.01-20 GHz
B10-26
B0-9
11 GHz
YTO TUNE
FM
SLOPE COMP
615
616
618
512
514713
515
513
614
612
717
MULTIPLIER/AMPLIFIER 20 (MA 20)
A12 SOURCE 20
20.0-25.6 GHz
X2
X2
25.6-32.0 GHz
32.0-40.0 GHz
A16 TEST SET MOTHERBOARD
40-50 GHz
4
B21
45 GHz
B0-14
B15-26
L
I
R
8.0 GHz
5.25 GHz
B4-26
B0-3
SOURCE 10
PMYO
3.8 GHz
3 GHz
3.8 GHz
613
117
118
11 GHz
B4-26
B0-3
A21 SOURCE 50 (SOMA 50)MULTIPLIER/AMPLIFIER
ALC
112
114
SLOPE
COMPENSATION
POWER DAC
TEMP COMP
113
115
116
111
X2
TEMP COMP
LOG AMP
R2
R1
R1
R2
LOCAL
DIGITAL BUS
POWER
BUS
DAC
YTO
3-10 GHz
25 GHz
FROM
A16
W1
8.333 MHz
TO
A18
HIGH DENSITY DATA BUS
POWER BUS
LOCAL DIGITAL BUS
SERIAL TEST BUS NODES
Bx = ACTIVE SOURCE BAND
MIXED POWER AND CONTROL SIGNALS
FROM
A16
FROM
A16
FROM
A16
FROM
A16
1V/GHz
(FROM A11)
1V/GHz
(TO A12, A16)
DAC
R2
R1
SOMA 50 SOURCE ALC
611
R2
R1
1V/GHz
(FROM A11)
MA 24 LO ALC
SLOPE COMP
1V/GHz
(FROM A11)
516
517
518
718
-15V REF
+9V REF
+15V REF
511
POWER DAC
POWER DAC
PRELEVEL DAC
411
+5V REF
s1
617
716
714
OFFSET
712
BREAKPOINT 2
711
BREAKPOINT 1
817
DRIVE
814
818
+10V REF
DET VOLTAGE OUT
812
813
+1.78V BIAS REF
PHASE LOCK IF DET
811
816
-10V REF
+5V REF
715
815
+10V REF
-1.25V BIAS REF
40 MHz
313
318
NC
GND
A11 PHASE LOCK
20 MHz
REF IN
J6
COUNTER
AQUIRE: ON
PRETUNE: 30 kHz
SWEEP: 100 Hz
316
DELAY COMP
RAMP CAL
2.5 GHz OFFSET
ANALOG RAMP
DIGITAL PRETUNE RAMP
317
315
312
314
700 kHz
20 MHz
15 MHz
6 MHz
311
NC
B1 - 26
B0
23 GHz
A27 A FIRST
CONVERTER
(MIXER)
LO
MIXER BIASLO REJECT
FILTER
A33 RECEIVER R2
A34 RECEIVER B
41.667
kHz
41.667
kHz
41.667
kHz
41.667
kHz
A31 RECEIVER A
A32 RECEIVER R1
I
I
L
L
R
R
0°
90°
2nd LO
2nd LO
a
b
R2
R1
A
B
J502
4
To 2nd LO x 4
a
To 2nd LO x 4
b
B0 1.000 MHz 0°
B0 1.000 MHz 0°
9
B1 - 25 8.29167 MHz 0°
B1 - 25 8.29167 MHz 0°
9
A28 R1
CONVERTER
(MIXER)
FIRST
LO
A29 R2
CONVERTER
(MIXER)
FIRST
A30 B
CONVERTER
(MIXER)
FIRST
LO
J2
J50
I
I
L
L
R
R
2nd LO
2nd LO
a
b
I
I
L
L
R
R
2nd LO
2nd LO
a
b
I
I
L
L
R
R
2nd LO
a
+15dB
+15dB+15dB
+15dB
+15dB
0°
90°
0°
90°
0°
90°
2nd LO
b
FROM
A16
W14
A35 RECEIVER MOTHERBOARD
40 MHz
FROM
A16
RFRF
+15dB
To
Phase Lock
B
B0
8.333 MHz
1.0416 MHz
To
Phase Lock
R2
B0
8.333 MHz
1.0416 MHz
To
Phase Lock
R1
B0
8.333 MHz
1.0416 MHz
To
Phase Lock
A
B1-26
B0-15
B16-26
B1-26
B0-15
B16-26
B1-26
B0-15
B16-26
B1-26
B0-15
B16-26
B0
8.333 MHz
1.0416 MHz
1.3 MHz
B0
7 MHz
7 MHz
IF
IF
IF
IF
I
L
R
I
L
R
LO
R1
R2
B
A
ADC
ADC
ADC
ADC
PCI
BRIDGE
300 kHz
300 kHz
IF Calibration
Signal
300 kHz
300 kHz
A6 SIGNAL PROCESSING
ADC MODULE (SPAM)
J3
A
R1
J5
J6
R2
B
J4
RAM
DSP
USB
REAR PANEL
INTERCONNECTS
RS-232
PARALLEL
GPIB
VGA
LAN
A40 FLOPPY
DISK DRIVE
LOCAL DIGITAL BUS
POWER BUS
MAIN
CPU
EEPROM
ROM RAM
VIDEO RAM
A41 HARD
DISK DRIVE
USB
INTERFACE
A3 FRONT PANEL INTERFACE
PCI BUS
A14 SYSTEM
MOTHERBOARD
A2
DISPLAY
A1
KEYPAD
A4
POWER
SUPPLY
USB
HUB
DISPLAY
PROCESSOR
INVERTER
POWER
PROBE
POWER
LINE IN
VIDEO PROCESSOR
RAM
FLASH
USB
PROBE
CONNECTORS
A15 CPU
SPEAKER
TO A8, A9, A11, A16
USB
INTERFACE
RS-232 PORT
INTERFACE
PARALLEL PORT
INTERFACE
GPIB PORT
INTERFACE
VGA
INTERFACE
10/100 BASE-T
ETHERNET
1.3 MHz
B0
I
L
R
B0
I
L
R
RF
B0
I
L
R
I
L
R
RFRF
+15dB+15dB
40 MHz
+15dB
40 MHz
40 MHz
+15dB
RF
10.0 - 12.0 GHz
6.0 - 7.7 GHz
7.7 - 10.0 GHz
12.0-15.4 GHz
15.4 - 20.0 GHz
20.0 - 24.0 GHz
W72
W71
W70
W69
Band
L.O.
Harmonic
Number
(N)
➊➋➌➍
➎➏
A8 Frac-N
Synthesizer
Frequency
(GHz)
A17
LOMA 12
Frequency
(GHz)
A20 LODA
(L.O.)
Frequency
(GHz)
A12
Source 20
Frequency
(GHz)
A21
SOMA 50
Frequency
(GHz)
A23/A24
SOMA 70
Frequency
(GHz)
0 1 0.011 to 0.046 0.011 to 0.046 0.011 to 0.046 0.010 to 0.045 0.010 to 0.045 0.010 to 0.045
1 1 0.053 to 0.756 0.053 to 0.756 0.053 to 0.756 0.045 to 0.748 0.045 to 0.748 0.045 to 0.748
2 1 0.756 to 1.508 0.756 to 1.508 0.756 to 1.508 0.748 to 1.500 0.748 to 1.500 0.748 to 1.500
3 1 1.50 to 3.00 1.50 to 3.00 1.50 to 3.00 1.50 to 3.00 1.50 to 3.00 1.50 to 3.00
4 1 1.50 to 2.00 3.00 to 4.00 3.00 to 4.00 3.00 to 4.00 3.00 to 4.00 3.00 to 4.00
5 1 2.00 to 2.25 4.00 to 4.50 4.00 to 4.50 4.00 to 4.50 4.00 to 4.50 4.00 to 4.50
6 1 2.25 to 2.50 4.50 to 5.00 4.50 to 5.00 4.50 to 5.00 4.50 to 5.00 4.50 to 5.00
7 1 2.50 to 3.00 5.00 to 6.00 5.00 to 6.00 5.00 to 6.00 5.00 to 6.00 5.00 to 6.00
8 1 1.50 to 1.93 6.00 to 7.70 6.00 to 7.70 6.00 to 7.70 6.00 to 7.70 6.00 to 7.70
9 1 1.93 to 2.50 7.70 to 10.00 7.70 to 10.00 7.70 to 10.00 7.70 to 10.00 7.70 to 10.00
10 1 2.50 to 3.00 10.00 to 12.00 10.00 to 12.00 10.00 to 12.00 10.00 to 12.00 10.00 to 12.00
11 1 1.50 to 1.60 6.00 to 6.40 12.00 to 12.80 12.00 to 12.80 12.00 to 12.80 12.00 to 12.80
12 1 1.60 to 1.93 6.40 to 7.70 12.80 to 15.40 12.80 to 15.40 12.80 to 15.40 12.80 to 15.40
13 1 1.93 to 2.00 7.70 to 8.00 15.40 to 16.00 15.40 to 16.00 15.40 to 16.00 15.40 to 16.00
14 1 2.00 to 2.50 8.00 to 10.00 16.00 to 20.00 16.00 to 20.00 16.00 to 20.00 16.00 to 20.00
15 1 2.50 to 3.00 10.00 to 12.00 20.00 to 24.00 10.00 to 12.00 20.00 to 24.00 20.00 to 24.00
16 3 2.00 to 2.13 8.00 to 8.53 8.00 to 8.53 12.00 to 12.80 24.00 to 25.60 24.00 to 25.60
17 3 2.13 to 2.50 8.53 to 10.00 8.53 to 10.00 12.80 to 15.00 25.60 to 30.00 25.60 to 30.00
18 3 2.50 to 2.67 10.00 to 10.67 10.00 to 10.67 15.00 to 16.00 30.00 to 32.00 30.00 to 32.00
19 3 2.67 to 3.00 10.67 to 12.00 10.67 to 12.00 16.00 to 18.00 32.00 to 36.00 32.00 to 36.00
20 3 1.50 to 1.67 6.00 to 6.67 12.00 to 13.33 18.00 to 20.00 36.00 to 40.00 36.00 to 40.00
21 3 1.67 to 1.86 6.67 to 7.45 13.33 to 14.90 10.00 to 11.18 40.00 to 44.70 40.00 to 44.70
22 3 1.86 to 1.93 7.45 to 7.70 14.90 to 15.40 11.18 to 11.55 22.35 to 23.10 44.70 to 46.20
23 3 1.93 to 2.13 7.70 to 8.53 15.40 to 17.07 11.55 to 12.80 23.10 to 25.60 46.20 to 51.20
24 3 2.13 to 2.50 8.53 to 10.00 17.07 to 20.00 12.80 to 15.00 25.60 to 30.00 51.20 to 60.00
25 3 2.50 to 2.67 10.00 to 10.67 20.00 to 21.33 15.00 to 16.00 30.00 to 32.00 60.00 to 64.00
26
3 2.67 to 2.92 10.67 to 11.17 21.33 to 22.33 16.00 to 16.75 32.00 to 33.50 64.00 to 67.00
3 2.67 to 2.92 10.67 to 11.67 21.33 to 23.33 16.00 to 17.50 32.00 to 35.00 64.00 to 70.00
DC BIAS 1
A16 TEST SET
MOTHERBOARD
DC BIAS 2
PORT 1
BIAS
INPUT
PORT 2
BIAS
INPUT
TO
A35, A17, A18, A20,
A22, A23, A24
TEST SET IO
INTERFACE
AUX OI
INTERFACE
HANDLER O
INTERFACE
I
TEST SET OI
AUX OI
TRIGGER OUT TRIGGER OUT
TRIGGER IN
HANDLER OI
LOCAL
DIGITAL BUS
POWER
BUS
USBx4
E8361A Overall Block Diagram
(Includes Options 014 and 080)
Service Guide: E8361-90001
EXT REF OUT
10 MHz
EXT REF IN
10 MHz
8.333 MHz
1.0416 MHz
B1-26
2nd LO x4
33.1667 MHz
J4
216
5
5
96
12
10 MHz
HIGH STAB
OCXO
100 MHz
PHASE LOCK REF
A10 FREQUENCY REFERENCE
215
211
218
212
213
2
J5
200 Hz
3
R
I
L
99.50 MHz
214
500 kHz
20
217
200 Hz
DAC
B0
4MHz
J3
20 MHz
REF
10 MHz
5 MHz
REF
J10
J12
J11
N/C
2
5 MHz
ƒ
ƒ
ƒ
20 MHz
RI
L
ALC
ALC
2
1.5 GHz
B2-26
J106
J101
B0-1
2.4 GHz
3 GHz
750 MHz
1 GHz
A9 FRACTIONAL-N SYNTHESIZER (OPTION 080 ONLY)
914
917915
913 912
1.5 - 3.0 GHz
VCO
2250 MHz
VCO
918
Level
Adjust
B3-26
B2
B1
916
LOCAL
DIGITAL
BUS
POWER
BUS
5 MHz
REF
FRAC-N
LOGIC
FRAC-N
LOGIC
W91
J4
J2
W92
W94
W95
W93
RECEIVER
A13 FREQUENCY OFFSET RECEIVER
(OPTION 080 ONLY)
911
+5V REF
TO A35
J502
LO IN
J3
LO OUT
PL OUTRF IN J6
RI
L
J105
W60
RCVR
AIN
CPLR ARM
CPLR ARM
W60
RCVR
R1 IN
SOURCE OUT
SOURCE OUT
W60
RCVR
R2 IN
W60
RCVR
BIN
Port 1
Reference 1
Reference 2
Port 2
PHASE
LOCK
MUX
B0 = 1.0416 MHz
B1 - 26 = 8.333 MHz
B0 = 1.0416 MHz
B1 - 26 = 8.333 MHz
B0 = 1.0416 MHz
B1 - 26 = 8.333 MHz
B0 = 1.0416 MHz
B1 - 26 = 8.333 MHz
B1-26
B1-26
B1-26
B1-26
B15-20, 22-26
B8-26
B4-7
10 MHz
J2
A25
TEST PORT
COUPLER
PORT 1
W67
W61
W63
W60
SOURCE
OUT
CPLR
THRU
Port 1
W42
W41
W43
W44
W20
W21
W36
W35
W31
W32
W33
W34
W19
W17
W16
W18
W40
W15
W23
W24
W25
W26
W27
W28
W29
W30
W2
5
A26
TEST PORT
COUPLER
PORT 2
W68
W62
W64
W60
SOURCE
OUT
CPLR
THRU
Port 2
6
6
W7
W39
W38
FROM
A16
FROM A16 J15
J100
J200
J300
J400
J101
J201
J301
J401
+5V REF
P2
W37
A22 SWITCH
50
50
J3
J2
J2
J4
500
50
W4
W8
W3
J1
FROM
A16
FROM
A16
FROM
A16
SOMA 70
A23 SOURCE MULTIPLIER/AMPLIFIER 70
(SOMA 70)
A24 SOURCE MULTIPLIER/AMPLIFIER 70
(SOMA 70)
X2
B22-26
B0-21
44.7-70 GHz
50
J3
J4
500
J1
SOMA 70
X2
B22-26
B0-21
44.7-70 GHz
J2
J3