HP 85662A - Page 13

F-DISPLAY SECTION
RF~SECT"ON1
21.4MHz IF
21,4MHz IF —I
SWEEP
->>
-»
J 1-3
^
IF-DISPLAY SECTION
I J15 ^
C J VIDEO TO A3A9 TRACK AND HOLD
J15
W
W35
W33
W34
W25
PENLIFT (FROM A3A1)
RECORDER .
OUTPUTS -< VIDEO
V
SWEEP
21.4 MHz IF OUTPUT
W30
<-5dBm>
r
DISPLAY
OUTPUTS
<
V.
BLANK
[A4A8 ATTENUATOR BANDWIDTH FILTER ]
[A4A6A2 DOWN CONVERTER ~~|
[A4A7 3MHZ H
BANDWIDTH i
FILTER i
AUX SWEEP 0 TO 10 VOLTS
SWEEP INPUT 0 TO 10 VOLTS
RECORDER VIDEO OUTPUT 0 TO IV
RECORDER SWEEP OUTPUT 0 TO 10V
21 .4MHz IF OUTPUT
[A4A6A1" UP CONVERTER"
!-£>
1
<+4dBm>
RES BW >1KHz
I
RES BW <1KHz J
21.4MHz
..J l_
IF OUTPUT TO FREQUENCY COUNTER
A
18,4MHz 1 POLE
[A4A5 STEP GAIN | [A4A4 BW F I LTER~|
LC POLES (2) I
[A4A3 LOG AMP F I LTE~R] |~?A4A2 LOG AMP-DETECTOR
-
1
<+5dBm>
0 TO 50 dB
A =10dB -15,9 TO OdB
A =0.1dB
J^> ww«
18.4MHz
J L
K"Y>-W- FREQ ZERO
/V/ (FROM A1A1)
<-3dBm>
A
A
LOG/L I N
(5 STAGES)
!<+10dBm>l
■>—■A
STEP
GAIN
CONTROL
AUX X (FROM A1A4 OR A1A2) (SEE NOTE 2)
AUX V (FROM A1A5 OR A1A2) (SEE NOTE 2)
AUX Z (FROM A3A2)
AUX BLANK (FROM A3A2)
[A4A9 IF CONTROL '/9
LINE IN >
EXTERNAL I ,
TRIGGER > (85
INPUT I
W26
^
LINE MODULE
TRANSFORMER
[A1A9 BUS "1
TRANSITION 1
1 1
-0
■ . XTAL PLOES (3) ■
/
L__
30 MHz
LOG/LIN
(4 STAGES)
DETECTOR
LG10
50 WIRE * ' ' V>l
INSTRUMENT t i
BUS TO A15 I I
CONTROLLER I *
J2 50 WIRE INSTRUMENT BUS
I
I
I
J L
|~A4A1 VIDEO PROCESSOR
<1V>I
m
1
LOG A IN
J L
AUX SWEEP
T~1
3
X
SWEEP INPUT
LOG OFFSET
VIDEO BW.LOG EXPAND,RECORDER CALIBRATION
J
(SEE NOTE 2)
[A1A6 +/-15V REG~' L
H.V. POWER SUPPLY
A1A7 +100V,
+5.2VREG
A1A8 RECTIFIER
n i
NE TRIGGER
+100V/+120V (SEE NOTE 2)
+ 15V
+5.2V
-15V
HV OSCILLATOR
-7*-
50 WIRE INSTRUMENT BUS
SWEEP
TO A3A8
A-D CONVERTER
LINE TRIGGER
TO A3A1 TRIGGER
HV OSCILLATOR
TO A1A3
HIGH VOLTAGE
REGULATOR
50 WIRE
/////£*ZA INSTRUMENT BUS
EXTERNAL TRIGGER
'TO A3A1 TRIGGER
NOTES:
1. UNLESS OTHERWISE INDICATED, POWER LEVELS
ARE MEASURED UNDER THE FOLLOWING CONDITIONS
USING AN ACTIVE PROBE AND THE SPECTRUM
ANALYZER.
INSTRUMENT PRESET
CENTER FREQUENCY CAL OUT FREQ.
FREQUENCY SPAN 0 Hz
ATTENUATION 0 dB
RESOLUTION BANDWIDTH 3KHz
2. IF-DISPLAY SECTIONS WITH SERIAL NUMBER
PREFIXES 3004A AND ABOVE HAVE THE FOLLOWING
CHANGES.
—THE A1A2 Z-AXIS APLIFIER, THE A1A4 X
DEFLECTION AMPLIFIER, AND THE A1A5 Y
DEFLECTION AMPLIFIER WERE INCORPORATED
INTO THE A1A2 XYZ DRIVER AMPLIFIER.
—THE A1A6 +/-
15V
REGULATOR WAS CHANGED AND
HAS BEEN RENAMED THE A1A6 HIGH VOLTAGE
POWER SUPPLY.
—THE A1A7 +100V, +5.2V REGULATOR +100V
OUTPUT HAS BEEN CHANGED TO THE +120V.
—THE A1A11 HIGH VOLTAGE MULTIPLIER HAS
BEEN INCORPORATED ONTO THE A1A3A1 HIGH
VOLTAGE MODULE.
F-DISPLAY OVERALL, BLOCK DIAGRAM (1 OF 2)