Installation guide

AT1
Electronic
Attenuator
5/10/40/20/40
AT1
High-Power
Mechanical
Attenuator
Gain
Adj.
250 MHz
to 4 GHz
Prelevel Detector Bypass
0
o
90
o
Burst/
Scan
Mod
ALC
Mod
Ext Q Mod
Ext I Mod
Offset Sense I
Offset Sense Q
Gain
Adjust
DAC
Filter
Cutoff
Latch
ALC Mod
Driver Bias
Gain DAC
Burst
Mod
Offset
DAC
Burst
MOD
Lin
DAC
Burst Mod
Driver
Bias Gain
DAC
Quad
DAC
VBLO
(LO dc
bias)
DAC
H_BYPASS
Het
Select
Latch
VCCS
VCCS
Dual Slope
Logger
ALC
REF
DAC
ALT
ALC
REF
DAC
Log
Offset
DAC
Detector
Offset
DAC
RF
Power
Detector
Modulator Control Logic
L Burst Mode
L ALC Hold
L Open Loop
L RF Burst Mod
L RF Off ALC Mod
L Hold ALC
L Alt PWR Sel
L Alt PWR
L Alt Int Off
LATCHES
L
Enable
Log
Busrt
L
Enable
Lin AM
L Open
Loop
In Band AM
In Band AM
Deep AM Hold
Lin Burst AM
Log Burst AM
L
Enable
Lin
Burst
Pulse Mod
Linear AM
Log AM
ALC Ref
ALC Ref
ALC Ref
Feed Forward AM
Pulse Mod
L Open
Loop
Feed Forward AM
ALC Mod
Offset
DAC
L Open
Loop
MOD L
BW 1
&
BW2
Pulse Mod
MOD L
BW 1
&
BW2
RF Output
BB
Thru
BB
Filtered
Marble+
Log Converter Amp
Main ALC
Alt ALC
H
AM
Hold
En
1200
MHz
850 to
1150
MHz
400
MHz
15 dB
3 dB
1 GHz
Ref
HET Band
Burst
Mod
Video
HPf
250
MHz
Low
Burst
Enable
RF
Power
Detector
Det BW
Sel
Latch
4 dB
Pads
Bulk R
Resistance
Pot
Sloped
Pad
250 MHz
to 4 GHz
Sloped
Pad
250 MHz
to 4 GHz
Pulse Mod In
AM Mod In
Aux. Out
Rear Panel
250 kHz to
4 GHz Output
Prelevel Drive
Pre
Level
Ref
DAC
A28
Reverse
Power
Protection
(RPP)
RF Path Block Diagram for Option 501, 502, 503, 504
blk_03
A13 Output
J6
P1-19
From A18 Reference
P1-19
J4
P3-4
J5
P1-6
P1-2
To A17
Synthesizer
P3-17
From A17
Synthesizer
J6
From A18
Reference
P3-7
From A18
Reference
P3-17
P3-19 P3-8
P3-6
and
P3-15
From A10
I/Q Multiplexer
J9
From A10
I/Q Multiplexer
J10
To A10
I/Q Multiplexer
P1-9
and
P1-34