1705a spectrum monitor – Tektronix 1705A User Manual
Page 194
LOW-PASS
FILTER
3 dB PAD
10.7 MHz
NV-RAM
DAC
X--AXIS
+11.8 V
+18V
SUPPLY
10 kHz
RESOLUTION
FILTER
GAIN
CONTROL
--11.8 V
SPAN
LOW
VOLTAGE
POWER
SUPPLY
TUNER
SWITCHING
VCO
L--BAND
TUNER
RO-BLANK
300 kHZ
RESOLUTION
FILTER
130.5 MHz
BUFFER
TRIPLER
2
nd
IF
20 dB
Y--AXIS
3 dB
COMBINER
HELICAL
BAND-PASS
FILTER
360 MHz
HELICAL
BAND-PASS
FILTER
130 MHz
LOCAL
OSCILLATOR
119.8 MHz
RAMP
GENERATOR
MARKER
GENERATOR
Z--AXIS
AMPLIFIER
4X
MULT
V
H
FOCUS
INTENS
HIGH
VOLTAGE
POWER
SUPPLY
CONTROL LINE
SIGNAL LINE
KEY
SCHEMATIC DIAGRAM
NUMBER
n
1705A Spectrum Monitor
FRONT PANEL KNOB
7
+40 VDC
+15 VDC
+5 VDC
--15 VDC
Z--AXIS
CONTROL
CENTER
FREQUENCY
SWEEP
SPEED
SHAPERS
+18V
(REAR PANEL)
VIDEO
RESOLUTION
INPUT
SPAN/DIV
FRONT PANEL
130.5 MHz
MICRO
PROCESSOR
70 MHz
INPUT
IF AMP
8 dB
ADC
EPROM
LOG
DETECTOR
NOTCH
FILTER
130.5 MHz
IF AMP
8 dB
70 MHz TUNER
L-BAND
INPUT
/RO-EN
FULL
VIDEO
FILTER
1
8
580 MHz
NOTCH
MIXER
4
4
490 MHz IF
/L-BAND
/V FILTER
/10 kHz
8
8
1
1
1
6
1
3
3
3
3
3
3
3
4
5
5
5
1
2
2
2
2
2
2
2
2
4
5
5
2
2
8
4
4
4
5
5