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LEVEL
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,- ----,
INPUT
WIDE BAND 1------1.a
SIGNAL
...._ _ _,. THRESHOLD 1---M TRANSLATOR
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O .R.
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r.----------- -- - -- ----- ----------,
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AMPLIFIER
CONDITIONER
DETECTOR
&
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CONTROL GATE j
(J) COUNTERI
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'-------J
.. _____ _,
.. _____ _. '---..----'
SECTION
J
I
L ___________________ --- -
---- ----'11 ___---- _...,___,
(1) INPUT CIRCUIT
COUNTING
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CONTROL
,------------M
1---.-10VERRANG
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(5)
AUTO-RANGING
r------:-,
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DEMULTIPLEXER
.Jul
RESET
COUNTER CHAIN
DETECTOR
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U
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r:-- -,-----,-----
1
a
1
TIME BASE GENERATOR
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-
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.,
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- - - __
_J
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,
.--
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CONTROL PULSE.GENERATOR
lfl
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,
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&
ITRANSFER
r
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MEMORY
BINARY COUNTER
11
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MULTIPLEXER DRIVER
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.
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,,
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CONTROL CIRCUIT
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( 2) TIME BASE & - - - - - - - - ::_I
CONTROL
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f MULTIPLEXER
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(6) POWER SUPPLY
r-------,
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-----,
r----:-,
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t
DECIMAL
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,_ ___ , ___ '...J
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I.
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POWER
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SUPPLY
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:
SW�TCH
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___ -_-_-_,
UNDERRANGE.
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DETECTOR
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L_I ______ J
,
·
1· -
POINT
1
DRIVERS
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(4)
DISPLAY ,'
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-----
---
.---
1 ,_._ ..... __
----1
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I
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CONTROL
SWITCH
L ___ ---
Fig. 1 S. System block diagram.
DISPLAY
?-SEGMENT
DECODER/
DRIVER
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__ I