START
s
I
CONNECT A 50 MHz -20 dBm
INPUT TO BAND 1. CHECK
A109TP5. IS IT A TTL LOW?
IS GATE LIGHT FLASHING?
IMPEDANCE CONVERTER OR
SIGNAL SELECT ON A109 BAD.
I
1
YES
1
CHECK THE ANODE OF Al06CR4.
IS IT A .5V,
50
MHz
SQUARE WAVE?
I
I
YES N
0
I
I
I
SIGNAL SELECTOR ON A106 BAD
1
CHECK Al06TPl. IS IT A 50 MHz
PULSE, ABOUT
3
ns
WIDE?
I
I
YES N
0
A106 SIGNAL CONDITIONING
CIRCUIT BAD.
CHECK
A106TP7. IS IT A 5 MHz,
I
TTL
LEVEL CLOCK?
CHECK
A107U22 PIN 2. IS IT
A
100 KHz TTL LEVEL CLOCK?
REF OSC
SELECTORIDIVIDER ON
1
A107BAD.
~
PRESS: TEST, 0.4
AS THE SAMPLE RATE POT IS
VARIED DOES THE CYCLE RATE
I
OF THE DISPLAY VARY?
I
SAMPLE RATE CIRCUITRY ON
All1 BAD.
I
I
FIRST DCU OR ITS ASSOCIATED
CIRCUITRY BAD.
GATE GENERATOR ON A107 BAD
YES
COUNT CHAIN CIRCUITRY ON
A106 BAD.
NO
Figure
614.
Band
1
Scans by ArtekMedia © 2007
To Next Page
Loading...