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Model 5245L
Table of
Contents
TABIE OF
CONTENTS
Section
I
GENERAL INFORMATION
1-1.
Introduction
1-6.
Instrument Identification
1-9:
Installation
and
Operation
ru
PERFORMANCE
CHECK
ry
REPLACEABLE
PARTS
4-1.
Introduction
4-4.
Ordering Information
.
V
OPTIONS
AND
MANUAL
CHANGES
5
-
1.
Options
5-3.
Option
02
+1248
BCD
Code
5-5.
Option 03 -1248 BCD
Code
5
-9.
Specials
5-13.
Manual
Changes
PRINCIPLES OF
OPERATION
. .
.2-I
2-1. Introduction
.
.2-l
2-3.
The
Diode.
.
.2-L
z-lL. TheTransistor
.....2-2
2-25.
Basic Operation of Decimal Counter
or
Decade
Divider
. .2-4
2-36.
Basic Counter
. . .2-9
2-44.
Time
Sequence
.2-10
2-4g.
OveralldounterOperation
.....2-tl
2-5L.
.z-tl
2-54.
'
.2-13
2-56.
.
.
.2-13
2-58.
.2-L3
2-60.
2-L4
2-62.
PowerSupply: Rectifier Assembly4.6; Regulator AssemblyA? .2-14
2-70.
. .
.z-ts
2-73.
Measurement
Units Assembly
A9
2-15
2-76.
Low Frequency Decimal Counter Assembly
A10-A14
. . .2-15
2-78.
5
.
2-L5
2-80.
50
MHz
Decimal Counter Assembly
A.1?
.
. . .z-Ls
2-84.
50
MHz
Readout
Assembly A18
.
.2-18
2-88.
Input
Amplifier
Assembly
A19-A20
. .
.2-L8
2-91.
Function Control Assembly
A21
.z-tg
2-95.
Gate
Control Assembly
A22
. .
.2-20
2-99.
Sampling
Control Assembly
A23
.2-21
2-105.
Oscillator and
Oven
A24, A25,
A26
. .
.2-22
z-LlL.
Multiplier
Assembly
A27
.2-22
2-113.
5
MHz
Decade
Divider Assembly
A2B.
.2-22
2-tt5.
Low-Frequency
Decade
Divider
Assembly
A29-A34
2-22
2-Lt7.
Time-Base Control Assembly
A35
. . .2-23
Page
. .
.1-1
. .
.1-1
. .
.1-1
. .
.1-1
.3-1
.4-t
.4-1
.4-l
.
5-1
5-1
5-
14.
5
-16.
6-18.
6-
19.
6
-21.
6-23.
Current
Instruments
OIder Instruments
.
5-1
.
5-1
.5-1
.6-1
.5-1
.6-1
.6-1
.6-1
.
6-1
.6-1
.6-2
.6-2
.6-2
.6-2
.6-2
.
6-3
.
6-3
.
6-3
.
6-3
.6-3
.6-3
.7-1
VI
ADJUSTMENT AND TROUBLESHOOTING.
. .
.
6-1.
Introduction
6-3.
Mai.ntenance
6-?.
Test Equipment.
.
.
6-9.
Assembly
Connection
Identification
6-11.
Instrument Cover Removal
6-13.
Assembly Location
6-15.
Printed
Circuit
Component
Replacement
6-17.
Adjustments
.
Regulator Assembly A?
. . . .
.
Input
Amplifier
A19
Ration Input
Amplifier
A20
Function
Control
y',2l.
.
6-24.
Troubleshooting
6-25.
Troubleshooting Aids
6-32.
Troubleshooting Procedure
CIRCUIT
DIAGRAMS
02349-1
IIl
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