Agilent Technologies E8241A Service Guide

A5 Sampler / YO Loop (Coarse Tune)
1 GHz RF
J1 1 GHz In
250 MHz LO
750 MHz
¸4
J1 1 GHz In
Mode B
Mode A
¸2
¸ P
J6 Frac-N In
500 - 1000 MHz +5dBm
RF
14 dB
LO
4
IF
f
80 MHz
FM_MODE_A_B
FNDIV
YOLGAIN
STROBE
FM MODE
& MULTR
STROBE
H_PRESET_EN
L_YOPLL_OPEN
YO_PREDAC
1 - Shot
0.2 ms
1 - Shot
1.0 ms
L_YOPLL_PRESET
A Bus
L_HOLD
(from YO Driver) LYOSLEW
(from FRAC-N) LFNSWP
L_YOL_UNLK
YO PLL
Unlock
Detector
YOLGAIN
Sampler IF
30 to 64 MHz
+
_
+
_
¦
F
MULTR
6
HIGH_LOW
+
_
¦
F
750 MHz C
750 MHz B
750 MHz
900 MHz
M
x ----
256
Unlock
Detector
155 MHz
Mixer IF
12 to 155 MHz
LO
RF
H_PRESET_EN
+/- 1
L CRS PLL
UNLK
MULTR LATCH
STROBE
L_CRSPLL_Pretune
Vtune
+
_
+15V
VCO
LO
RF
f
S
618 to 905 MHz
f
S
f
YO
3.2 - 10 GHz From
(A28 YIG Oscillator)
YO
Phase-
lock
1- Shot
S
900 MHz
SOURCE_SETTLED_H
LFNSWP
FM_OFF_H
Block Diagram for the Reference / Synthesis Loop
A32 10 MHz
Crystal Oscillator
100 MHz
10 MHz
10 MHz
10 MHz
50 MHz
F
500 MHz
500 MHz
1 GHz
1 GHz
1 GHz
x2
x5
x10
1 GHz-OUT_LOWBAND
ON / OFF
10 MHz to
A6 Frac-N
100 MHz
1 GHz
Output to
A5 Sampler
1 GHz
Output to
A8 Output
10 MHz
Digital Out to
A11 Pulse / Analog
Modulation Generator
10 MHz Digital Out
Ext
10 MHz
Out
Note: This drawing shows the A7 Reference (Option UNJ).
Both the A7 Reference (Standard) and the A7 Reference (Option UNJ)
have the same input and output signals.
Ext
10 MHz
In
A7 Reference (Option UNJ)
A31 Motherboard
se989a
2k
VSWP_DAC
V_GHZ_DAC
FM_GAIN_DAC
FM_FREQ_COMP
FM_FREQ_COMP_L
A9 YIG Driver
PRETUNE_DAC
H_SPEEDUP_EN
HOLD_DAC
COMP_DAC
Pretune
Speedup
FM
Coil
YIG
+32 V
Main
Coil
LYO Loop Hold 1
800k
230
FM_ATTEN
FM_FREQ_COMP_H
FM_ATTEN_L
FM_ATTEN_H
230: :1k
::
:
:4k
J1
3.2-10 GHz
+ 13 dBm
>
>
X2
Doubler
3-10
10-20
5-10
3-20
Limiter
3-10
3-10
3-10
A29 20 GHz Doubler
750 MHz
16-20
13-16
10-13
80 MHz
J4 to A5 Sampler
3.2 - 10 GHz
-7 dBm>
J3 to A6 Frac-N
3.2 - 10 GHz
-7 dBm>
J2
>3.2 - 20 GHz
14 dBm>
500-1000 MHz
Reference Input
10 MHz TCXO
10 dB
To Analog Bus
VCO Out
VCO
FM
Atten &
Offset
Loop Filter &
Lead-Lag
Reference
Divider /2
5
Control
RF
Power
Detector
Phase
Detector
2
12 dB
5 MHz
FM
Data I/O
VCO
Tune
Reclocked
VCO/N
7
7
7
YTO_FM
H_FM_INV
H_SD_FM
L_SD_OFF
L_FM_OFF
MOD_CONTROL
1MHzPM
0.1 MHz PM
Z
o
SD
Mod
Control
5
Frac-N
Prescaler Control
A6 Frac-N (Fine Tune)
9
Source Settled
Indicators
ATTEN_
CONTROL
FM_OUT_
BAND_
DAC
3
16
16
L_WIDELBW
L_POS_PHASE_INCR
STRB
L_RST
FM
SOURCE_SETTLED_H
3
EE_POT_
CONTROL
FM Input From
A11 Pulse / Analog
Modulation Generator
FM_OFF_H
FRACN_SWP_L
GAIN_CONTROL_DAC
Prescaler
FM_IN_BAND_DAC
FM_IN_BAND_OFFSET_DAC

Agilent Technologies E8241A Specifications

General

Brand	Agilent Technologies
Model	E8241A
Category	Portable Generator
Language	English