Keysight E8257D/67D - AT1 115 dB Attenuator

A23
0-2 GHz
ALC Det
Block Diagram for the Vector Low Band RF Path,
Service Guide E8251-90359
(Prefix >
US5042/MY5042/SG5042)
Vector_Lowband_RF
A24
2-20 GHz
ALC Det
0-20 GHz
output
Optional
Attenuator
AT1
5/10/40/20/40
0-3.2 GHz
A30 Mod/Filter uckt
ALC Pulse
3-20 GHz
**
1-7
8
0-3.2 GHz
A28 YTO
3-10 GHz
X2
A29 20 GHz Doubler uckt
To
Sampler
3-10
/ 2
N
A6 p/o Frac N board
0.25-3.2
GHz
/ 2
N
Ramp Swp
Prelevel
Analog Bypass
A35 3-20 GHz IQ Modulator uckt
Gain Adj
Corax
Narrowband
with Fireblade
Wideband
A43 Amp/Filter Board
0-3.2 GHz
LB Step
Atten
10 MHz
10-250 MHz
.25 - 2 GHz
200 MHz
Pulse Driver
Power
Amp
2 GHz
/ 2
N
/ 2
N
1
Dividers below 250 MHz
1
4 dB
ALC Mod
Driver
2-6
5-6
6
5
2-4
5
6
1,2
4
1,3-4
1-4
1-5
.25 - 3.2 GHz
.1-10 MHz
1,3-4
1,2
HAR input not used in
Vector
2-6
1 GHz Ref
ALC Scan
1GHz from Ref
board (A7)
A10 ALC Control
from ALC board
A8 Vector Output Board
Pulse
<0.25 GHz
2-4
5-6
+
Clamp
ALC Mod
Driver
Pwr
Limit
DAC
+
2-6
Gain
DAC
AUX OUT
300 MHz
2-4
HPF above
396 MHz