Heathkit GCA 1000 1 Manual

Page 1

Instructions
for the

Heatho

RS-2320 OUTPUT ACCESSORY
Model GCA-1000-1

Table of Contents
Introduction ............................... 1 Theory Of Operation ...................... 11
Parts List ................................. 2 Circuit Description ........................ 14
Siep-By-Step Assembly ..................... 3
INTRODUCTION

The RS-232C Output Accessory. Model GCA-lOOO-l,
is used to send the time and date. as established
by the 601000 Most Accuxate Clock, to a computer
using the standard RS-232C serial format.

Copyrighl © 1983 HEATH COMPANY
Primed In the United Siaiss of America BENTON HARBOR, MICHIGAN 49022 597.3132_o5

Page 2

Pa9e2

Heathkit

PARTS LIST

Remove the parts from the carton and check each
part against the following list. The key numbers cor-
respond to the numbers on the Parts Pictorial" [Il-
lustration Booklet. Page 1). Return any part that is
in an individual envelope back into the envelope
after you have identified it until that part is called
for in a step. Do not throw away any packing mate-
rial until you account for all the parts.

KEY HEATH QTY. DESCRIPTION CIRCUIT
& Part No. Comp. No.
RESIST ORS

NOTE: All resistors are 1/4-watt, 5%.

Reierdirectiymthoenelosedreslstor/dlodesheetandtollow
IheMUdIuIsatthetopotthatsheettocheokywrresistors
anddiodee.

A1 s-1a1-12 2 1800(brn-gry-brn) 3401. Race
A1 8471-12 1 470 n (yeI-viol-brn) am

A1 5102-12 1 1000 n (hm-blond) R402

A1 5472-12 1 4700 n (yeHIoI-red) mos

A1 ewe-12 1 10 m (hm-bloom) mos

A1 6223-12 1 22 I10 (MM-org) R404

A1 W12 2 as m (org-arm) R407. mos
A1 6404-12 1 100 m (bur-bli-yei) R409
CAPACITORS

BI 21-199 1 1 uF ceramic C426

31 21 -1 40 1 W1 uF ceramic 042!

32 25-838 1 3 3 of tantalum electrolytic C404

83 25-800 1 10 pF Myth: 0405

BS 25-885 I 100 of eiearotytic C401

34 27-71 1 1 F Mylar owe

54 27-181 1 01 uF Mylar c402
DIODES

CI 56-16 1 1N5231 zener 2401

C1 5&56 1 1N4149 D401

TRANSISTORS - INTEGRATED CIRCUIT

NOTE: The translstor and Integrated circuit may be marked
tor Identification In any one of the Iollowing tour ways:

To order a replacement part, always include the
PART NUMBER. Use the Parts Order Form fur-
nished with this kit. If a Parts Order Form is not
available, refer to Replacement Parts" inside the
rear cover of this Manual.

KEY HEATH
No. PartNo.

QTY. DESCRIPTION CIRCUIT

m

1. Part number.

2. Type number. (On the integrated circuit. use only those
numbers and letters In BOLD print. Disregard any
other numbers or letters.)

3. Part number and type number.

4. Part number with a type number other than the one
shown.

CAUTION: The IC is protected against damage caused by
static electricity. Do NOT remove the IC from its team pad
until you are instructed to do so in a step.

D1 417-801 2 MPSA20 transistor 0401. 0402
D2 444-2934 1 3870 programmed U401
microprocessor
MISCELLANEOUS
E1 45-608 1 39 pH coil L402
E1 45-609 1 2.2 .111 mil L401
:2 eo-ase 1 Dip switch 5401
E8 252-2 2 4-40 nut
E4 54-0 2 #4 Iodtweeher
E5 255757 2 4-40 X 3/18 hum
347-55 12' Mrs ribbon ediie
E6 390-2488 1 Function Iebel'
346-1 3" Fberaieeving
. 346-35 3' Heat-ohm shoving
E7 1 Blue and white label
Ea «2-134 2 Wire oonneota
E9 432-068 4 Spring oonneaor
(one extra)
£10 432-1032 1 PIS-2320 connector
E11 432-1033 4 Gold pin (one extra)
E12 432-1129 I 41am plug
513 432-1151 1 m m
E14 434-253 1 Huh IC socket
E15 438-55 1 PoIarlzlng plum
597-3263 1 Resistor/Diode sheet
1 Instrualon Mutual (see from
M0 '0' Pin number)
Solder

'Located Inside the Manual. Set it aside until it is called Ior later.