Hitachi 505 User manual

:
--
-
j-
-a:
--5
-l
-l
-l
-l
-1
-l
rJ
4't HITACHI ANALOG
COM?UTER
CO}ilIENIS
I - INTN,ODUCTION
II - THE
HITACHI 505 COMPIIIEH,
GENERAL
DESCRITTION
OF HIIACH]
?age
4
SECTION
SECTION
1.
2ö
t/
t/+
2T
21_
21,
u
/ö
217
)"7
3/+
lQ
l+2
l*7
OIER,AT
ING CONSIDERAT
IONS
a. ?relininary Operating Considerations
b. ?re-Patch Panel Insertion and Removal
c. Amplifier Balance
d. Changing Computational Components
MONII'ORTNG
AND
COIfIROL
a. Output Selector SL-25A """""'
b. Overload Indicator OL-25I
c. Digital Voltmeter DV-25L
d. Multi-Range Voltmeter (in the Contror Panel) "
e. Reference Potentiometer (in the Control
Panel)
f. Mode
Control (in ttre Control ?anel)
^ T nrnlrq
6.
h. Slave Switches
i. Readout Devices
(in the Control ?ane1) ........
j. Function
Switches '"""'''
k. ?ower
Switches (:n tne Qontrol Panel) """"
POTENTIOMETERS ""'' """.."""
o?EFATTONAI
AI4PT,TFTER'
........... "'"..""'
a. General
Considerations .."""..'
b. 505 Operational Araplifier DA-151 "" "

6. QUA.RfER.SQUAFB
MULTIPLIER
EM-151 56
a. MultiPlication 58
b. Division 62
7 . F'IJNCTION
CENERATORS
^ v2 pixed Function Generator FG-151r-A ........"
4. ^ r r^vq
ol+
ol
ol
67
na
öJ-
QC
AO
b. Log X Fixed Function
n Tni onnomctrie Fixed
r r rSvrrvrrrv er +v
d. Variable Function Ge
e. Variable F\rnction Ge
f: Varlable h:.nction Ge
Generator FG-155A
Functi-on Generator FG-153A
nerator FG-15I
nerat,or TG-j-52
nerator FG-L57 .aaaa.
8. OOMPAnATORS
cP-151, CP-I52
9. rlEE DToDES
FD-151 .. .
" '
10. TRANSIER
DELAY
ELE|'ENT
TD-151 " " " " '
11, AIJIOMATIC
OTERATOR
AO-151
T2. MODE
CONTROL
PANEL
MC-f51
LL. REFtrTIII\IE
OTERATION a02
...aaaat'""tttt"'
SECTTON
IlI - MA]NTENANCE' SB?ARATED
''HIIACHT ANA],OG
COMPUTER
TROGRAM
MANUA-L'I
Will EXPIA1N
thE PTOgTAMM1Ng
technique for HIIACHI 5A5
Computer.
The Manual is common
in programmi-ng
for all kinds of HIIACHI Analog
Conputer.
a.aaaa
11
€_
-

Fi.nr'm
Itrri,rber
all
afa
2 2-1
2.2-2
2.2-3
2.2-/+
2.2-5
1.1-O
aary
2.3-t
/ 1-/
2.3-3
2.3-/o
aJ'')
aJa
2.5-/+
ILLUSTR.ATIONS
Title
Typical JOJ, Front Vlew
Pre-Patch Panel, Modular Layout
Amplifier with Six-Connector Bottle-?lug Providing
Feedback
DVMFront View
Pre-Patch Panel Insertion
Amplifier Balance Control Locatj-on
Computer Component
Module Assignment Areas
Removal of Conputing Module
Patching Block Replacement
HITACHI
505 Control Area
Readout Panel OC-151
Patching Block and DVMTA4
to
SEL
Patching
Qimnl ifiaä (nhamxtis Of Reference Potentiometer
Conneeting Ar€a, Rear the Comprting Console
Potentiometer Patching Unit PT-151 and ?otentiometer
Panel fr-Z5t
Potentiometer Schematic Showing
ein = 100 volts
Potentioneter Loading
6O4 Pntantinmotp- f'.i--rr.i*e crm-rified SchematiC
)vJ L v
Potenti-ometer Schematic ea'rd
Conputer Diagram Synbols
Operational tunplifier, Simplified Block Diagrarn
Operational Arnplifier, Simplified Schematic and
Patching Block Layout
SummerAmplifier Patching
Integrator Patching ard Simplified Block Diagrant
r_l_l_

/ n-l
z.o-)
z.o-2
4ry1
2.7-2
2.7-3
adl
2.7-5
z. /-o
<'. l-ö
2.7-9
1.l-LU
a.l-!4
2.7-U
2.7-1_5
2.8-L
2.10-1
T-+^-e-!^, n--- j l.i
er rha S,mnl i fi ed SchemrtiC
Irtu=SIauut ru.rlJ!rLfsf 4Lq ulrryrJJ!(
\rhht tl .te.] \ taer tlt.gram
r rut ulPrre
c^,,-*:- ^ ^i -^,,.1+ (innl i ni a^ snr.anatic
uYuarrrlS u, r!'rPrr
Mrr]tinlien Simnli].ia| R-lnnk llj2srnm r-i Dr*nhin''
1'1(! UIplfVt . Jlllplrr vLaA! a'l 411tr L , uu- tlIIE;
R-l nnlr T lrrnrrl.
M'rlt.inl icati on P^+^!.i-^ --Ä c'ih-] ified schenatic
lrurury*ru r auvrrrlr5 arrq ulrrPf-
ni--.r^j ^.^ D-+^r^j-., znd simn'l i -ied schemrtic
yf v!-furt r 4uurr!116
X2 FGrSimplified Schematic Block Diagran
X2 FG,
Patchlng arrd Simplified Schernatic
Log X FG Patching and Simplified Schematic
Trigonometric FG. Simplified Schematic and patching
IJVUÄ UAJVAU
sinX Patching and Simplified Schenatic
cosX Patching and Simplified Schematic
Pri nn i n'l o nf IIF|I
VFG
FG-151, Si-nplified Block Diagram and ?atching
H lnnr I a17^r1t
VFG FG-151, Separate VFG Patching
VFG FG-151, Combined VFG Patching
Location of VFGIs and VFG setting
Sample Output Curve
Principle of VFG TV-l-57
VFC FG-157, Sin,plified Bl-ock Diagram and Patching
H I ^nr | ä1r^11t
Timer Operation
Comparator Simplified Schematic and Patching Block Layout
Fr.ee
Diodes Schematic and ?atching Block T,ayout
Transfer Delay Elenent, Simplified Schematic and patching
Block Layout
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
l_v

L-,
I
q
!
l-t
It
h
hr
n
f-1,
f-{
f-r
f'-r
t'-t
n
f-l
fT
T
2.l-u-^z
2.f1-1
2.IL-2
2.I2-I
1.L)-L
1. LJ-1
!1an9fer Delay Element, Typical patching and
Simplified Schematic
Äutomatic Operator, Simplified Schematic and
Block Layout
Automatic Operator, Block Diagrarn
for Typical
Connection and patching nlocklayout
Mode
Control panel-
patching Block Layout
Timer Panel , TM-25I
Timer Operation
Patching

SECTION ]
IIüIRODUCTION
Many scientific problems studied today i-n various fields involve
the solution of parbial or ordinary differential equations. It is
the exception, rather than the ru1e, that the pr"oblerns adrnit' exact'
analybic solutions. The modern analog computero zuch as the Hltachi
505, provides a convenient nethod for obtaining numerical solutions
to zuch problems as well as enabling the scientist to study the effect
of changes ln the physical system.
The nethod of problem solution in an ,nalog computer is quite
sJmple. The conputer i-s used to ltbuildrr an electronic analogy which
obeys the same set of differential equations as the physical problem
to be studied. Once this nodel has been constructed, er;:eri-rnents may
1,.
\.^i'._1;.,...
! i
be performed on this nodel in lieu of experi.ments on the physical
system. Investigations which might be difficult to carry out on the
actual system becone quite feasible with this technique. For exa^np1e,
a ptrysician may wi-sh to study the effeet on blood presfllre in a cer-
tain portion of the brain in the event that a patient loses an ann.
It is irnlikely that this experiment would be perfonned by any mearls
other than simu].ationl
Since the analog computer rmodelsrr the problem' each problen
variable corresponds to, or is analogous,to, " computer voltage: A"
1..1.. f . ' ' '...,
these voltages are readily available for measurement, instrumenti-on
is enployed to measur€the problen variables as in an actual system.
Solutions may be continuously displayed on a readout oscilloscopet
perma^nently plotted on a strip chart or x-y plotter, or ni;merically
-1-

.|
evaluated by means
of a voftmeter or digital voltmeter'
The detailed steps necessary for problem solution will be dis-
cussed in detail in a later section' Briefly' one
must first con-
strrrctamathematicalmodelforthesystemtobestudied.oftensuch
a model is not avail-able. rn this case, there are anal0g computer
:.-
techniques available for generating a model fron äeta'taken from the
physicalsystem.Thenexbstepi-nvolvestheconstructionofacomputer
nblock diagram" (an array of summing
alnps, integrators' etc') r^rhich
obeys the same
differential equations as the systern
model' This dia-
gramisthenusedtoconnectcomputingelementsutilizingthepatchboard.
Sincethepatchboardmayberemovedfromthecomputerandanotherpatch.
board inserbed, it is not necessary to use computer time otherSthan for
actual comPutation.
Theproblemisnowreadyforcomputersolution..Aftermorrnting
the proper patchboard, the potentiorneters (u?otso) are set to corre-
spond to the physical problem constants ' The computer solution is now
obtained by pressing the rtcoMPUTElt
button. ?roblem variabfes may then
be observed and recorded as desired. Additional runs may
be rnade
with
differentphysicalconstants,problernvariables,initialconditions'
^+^
Thisnarrualdescribesthecomputeroperationandprograrrrmingin
detail.Itshouldbeemphasisedthataknor^lledgeofelectricalengi-
rieeringisnot'necessarytosuccessfullyoperateananalogcomputer'
Theblockdiagranapproachusedinthismanualiscommoni.nnanyfields..
Themanualdescrlbesthegeneralcomprrteroperatingcontrolsfirst.
Thisisfollowedbyamodulebyrnoduledescriptionofeacht'blackboxn,
-2-

I
I
r
r-l
t-.
I
i
l-
t
I
ll
including its input-output characteristics and photographs of actual
n.fnh]rnrrÄ annno^tinnq R:ein nroor:mmino i c ownl:ined in the nro-
y4vvttrt\JaLu uullltEu . uaJru *rrrlu
graJn
manual at an introductory level. The detailed example given in
bhis section may be used as a model for the userr s particul-ar problem
co*. rrn 'in *,ha mrnrrr'l +'i+'1 a^ tlAhn-l-inr*.innqll ovn] rinq tho enani:l
DVU 4P flMlE lll4llUaJt UaUJsq ö},PfrU4UrvllD , g^y!@frrp urlu pysvla!
features of the Hitachi 505 for more adva.ncedtechniques. It incfudes
function generation, transfer fr-mction simulation, md partial- dif-
ferential equation solution. Helpful suggestions for the use of the
automatic operation unit in optirnization problems and the Timer and
Logic Operations board in iterative methods is also included.
-3-

ri'110': ;T
j..j : '. : 5 -C:i T'.-rr"
1. GEIiEIilI DESCRITT]ÜIi
OT
HITAJ;{I !05
The Hitacb"i 5C5
1s a meclii-un
size rlesk-top generai purpose
analog computer having a wide variety of applications' This computer
maybeinstalledinanyofficeorlaboratorywithoutspecialconsidera-
tions as to power or temperature control' The power consumption is
quitelo.lu,easilyhandledbynorrnalofficewiring.Sincethiscomputer
supplies its or^m
internal operatlng en'rironment by means of an oven'
itdoesnotdependonanaccurat'eexternaltempera+'urecontrol'The
heatdeliveredtotheroombyther-rnititselfisaboutthes.ryneas
that delivered by a rnediutn
size laboratory oscilloscope '
The Hitac hL 5A5
is nodular in concept with solid stat'e components
used throughout)f. The modular arrangement of the computer permits
specialmachineconfigurationsdependingont.heuserlsrequirements.
The componen-[
arraJlgement
allows sirnplified wiring. color coding of
the modules aids in rapid identification of elements and simplifies
wiring checks.
The conpu-cer is housed in two cabinets ' the computer main frame
andthecontrolconsole.Theseunitsmaybeeasilyseparatedfor
transportation.Themaincomputerconsolecontainsthepatchboard
r^riththeassociatedcomputingcomponentsmountedinanovendirecti-y
behind the patchboard. Beneath the patch panel is a panel contai-ning
the anplifier overload inoicators, the readout addressing system' and
thecoefficientpotentiometerswiththeirassociatedindicatorlamps,
it ulith t,he excePtion
voltage rectifier
of the oscilloscoPe tube and a high
in if.
I
r
t
r
r
t
t
t
t
t
I
I
I
I