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'I%hle nf Contents
Model 204C/U
--o-
I.
GENERAI.
INFORMATION,
l-l
1.3. Specificatiorrs Rntl General Information.
l-l
I -I 3. Acccs&ics
Available .............
1-I 5. lnsw~mcnt and Manual Identification
I .I 7. Change Sheets. .................
1.19.
Options Available ..............
1"5. Description
1.1
1-2
I-2
1-2
l-2
Section
Page
II,
INSTALLATION
.....................
2-I
2-1,
Introduction
....................
2.1
2-3.
Inspection ......................
2-I
2-S.
Yowcr Requirements
...............
2-I
2.7.
Grwndinp
Requirements
............
2-l
2.9.
lmtaliatio"
....................
2-l
2-I 1.
I<wk/Bench
Installation
...........
2-l
2.13.
Repackaging fur Shipment ..........
2-l
III.
OPERATING
INSTRUCTIONS.
3-l.
Inl~roduction
3.3.
Instrumcrll
Description.
3-5.
Turn On Proccdurc
3-7.
Operating Considerations
3-x.
Floating ourpur
3.10
Synchronization.
3.13.
Low Distortion.
3.15.
Mu&l 204D Output
3.18. linll~cry Operation
Page
3-l
3.1
3-I
3-l
3-l
3-l
3-l
3-l
3.4
3.4
3.19.
Rcchargcable Battery Operolion
3.4
3.25.
Rccharecabic Nickel-Cadmium
I3alwxics
34
TABLEOFCCINTENTS
PlOP
Page
1-I.
Intioduction.
l-l
Section V (Cont'd)
s-9.
Attenuator
Accuracy
(Model 204D only)
S-10.
Output Control Check
(Models 204C and HZ0 only).
5-I 1,
Output C!ontrul Cheek
(M&l
204D unl~)
5.12.
Mance Check
5.13.
Sync Output Check.
5.14.
Sync Input Cheek,
5.15.
Prcqucncy Range Cheek.
S-1 6.
Hum and Noise Check
S-17. Checks of Gelleral Operaling
Characteristics
5.18.
Output Voltage and
Impedance Checks.
5.19,
Sync Impcdancc Cheek
5.20. Cuvcr Rrmuvsl
5.25.
Adjustment and Calihrarian
Procedure
5.26.
Introduction
5.29,
Power Supply.
5.3I.
Bias Adjurtmcnt
5.33.
AGC arid Fi'equency Adjustment.
5.34.
High Frequency Adjustment.
5-35,
Distortion
Adjustment,
S-36. Fsctoiy SCIwtcd Cumpuncnls
S-38, Truublcshwliny
Proccdurcs
5.39.
F,",l,. I'HIICI Yruccdurc
541,
Detailed Cirwil
Twuhlcshooling
545. Battery Replacement,
5"4
5.4
5-5
5.5
s-5
S-5
S-6
S-6
5-l
5-7
S-l
5-l
5.8
5.8
5-R
s-u
5-8
5.8
s-u
s-o
S-8
s-9
5-v
5-i)
3.32.
Cycle-fife
of Nickel.Cadmium
Hatt,crics
3-5
3J8.
Mercury Uattcry Operation.
3-5
Sccliun
I".
CIKCUIT DESCRIPTION
section
"I.
REPLACEABLE
PARTS
h-l,
Intruduction.
6.4.
Ordering Information
6-h.
Nun-Listed Parts
Page
4.1
4-1.
Inhodoction.
4-l
Bridge and Amplifier.
4-I
Peak Cumparatorand
AGC.
4-I
4-2
4,2
4-3
Section
4-4,
Block Diwarn
Descrintion
4-l
I
4-I 3.
600 Ohm At~tcm~~tur.
4.16. Dctailcd Cixuit
Description
4-24. I'w,cr Supply.
VII,
CIRCUIT DIAGRAMS.
7-2.
Introduction
7-3.
Schematic Diagrams.
7.5.
Cornponcnt, Location Diagrams
Seelion
VIII. BACKDATING.
,,
.
.
.,
Page
I-1
7-l
l-1
l-1
Page
8-l
D-l.
I"~,w.l"Cl,O".
X-l
8.4.
Chance No, I for 204C Serial No. 808-O 1245
MAINTENANCt.
..
..........
5-1,
Introductiozl.
......
......
5.4.
Perfurmance Checks. .......
5.6.
Uiel Accuracy Check. .........
..
5.7.
Flatness Check,
............
S.8.
Distortiw
Cheek
...........
il
5-l
5.1
5-l
5-I
S-3
and-low:
2O4C-I-120 Serial No. 808.00845
and IDWCl
U-1
8-5.
Change No. 2 for 204C Serial No. 9 I K-02 I20
and lower; 204C-1120 Serial No. Y 1%OlY70
and lower:
2041)
Serial No. 910.OOIYS
and low,
8.1
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