Agilent Technologies E8257C User Manual

Sweep Start / Stop (to / from A9)
Sweep Start / Stop
A5 Sampler / YO Loop (Coarse Tune)
1 GHz RF
1 GHz In
250 MHz LO
750 MHz
J1 1 GHz In
Mode B
Mode A
¸P
500 - 1000 MHz +5dBm
Frac-N
In
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
+
_
+
_
MULTR
6
HIGH_LOW
+
_
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
YO
Phase-
lock
1- Shot
S
900 MHz
SOURCE_SETTLED_H
LFNSWP
FM_OFF_H
Block Diagram for the PSG Signal Generator Reference / Synthesis Loop, Service Guide E8251-90259
A32 10 MHz
Crystal Oscillator
100 MHz
10 MHz
10 MHz
10 MHz
50 MHz
500 MHz
500 MHz
1 GHz
1 GHz
1 GHz
x 2
x 5
x 10
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 UNR).
Both the A7 Reference (Standard) and the A7 Reference (Option UNR)
have the same input and output signals.
Ext
10 MHz
In
A7 Reference (Option UNR)
A31 Motherboard
p-ref_synth-loop
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
to A5 Sampler
3.2 - 10 GHz
> -7 dBm
to A6 Frac-N
3.2 - 10 GHz
> -7 dBm
>3.2 - 20 GHz
H_Speedup Enable
V_GHZ_DAC
A9 YIG Driver
Sweep Out
Rear Panel
(0-10v)
FM
Coil
FM_ATTEN_L
FM_ATTEN_H
FM_GAIN_DAC
FM_FREQ_COMP
FM_FREQ_COMP_L
FM_ATTEN
FM_FREQ_COMP_H
800k
230: :1k
: :
:
:4k
+32 V
Main
Coil
LYO Loop Hold 1
2k
230
Pretune
Speedup
Ramp
Sweep
YIG Pre-tune DAC
Sweep Control
Sweep_DAC
Delay_Coupler DAC
Sweep_DAC
Programmerable
Counter
Programmerable
Counter
YIG
> 3.2-10 GHz
> + 11 dBm
Retrace (Rear Pnl)
Z-axis / Blanking (Rear Pnl)
Stop Sweep (Rear Pnl)
Sweep Level (to A10)
(cw)
sweep=
0V
3.2-10V
J4
from A5
J9
from A6
J3
from A6
Ramp Swp
10MHz
Ref
100Hz
(cw)
J4
J3
J2
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
1 MHz PM
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
FM
FM
SOURCE_SETTLED_H
3
EE_POT_
CONTROL
from A11 Pulse / Analog
Modulation Generator
FM_OFF_H
GAIN_CONTROL_DAC
Prescaler
FM_IN_BAND_DAC
FM_IN_BAND_OFFSET_DAC
Out of lock
Detector
L_Out_of_Lock
Lowband
Frec-N
Divide
Sweep_YIG Driver
Fixed
Divider
3.2-10GHz
from
A29 Doubler
J1
Programable
Divider
L_WIDELBW
L_POS_PHASE_INCR
STRB
L_RST
to / from
A6
J6
J1
FM Input
A28 YIG
J1
J1
f
I
f
I
I
2
4

Agilent Technologies E8257C Specifications

General

Brand	Agilent Technologies
Model	E8257C
Category	Portable Generator
Language	English