Jmi-telescopes MAX Computer User Manual download pdf (Page 14)

Page 14

Appendix B — NS/DS Catalog Abbreviations

AB Abell

AN Antalova

B Barnard

BA Basel

BD Baade

BI Biur

BK Berkley

BL Blanco

BO Bochum

CE Cederblad

CR Colinder

CZ Czernik

DD Dolidze-Dzimselejsvili

DO Dolidze

FR Frolov

GU Gum

H Harvard

HA Haffner

HB Hubble

HU Humason

KI King

LY Lynza

MA Markarian

ME Melotte

MF Maffei

MK Minkowski

MR Merrill

NE New

PA Palomar

PI Pismis

RO Roslund

RU Ruprecht

SH2 Sharpless

SP Stephenson

ST Stock

TO Tombaugh

TR Trumpler

TZ Terzian

U Upsala

VB Van Den Burgh

Appendix C — RS-232 Cable Assembly

The NGC-MAX computer unit has an RS-232 serial port which may be used to provide encoder position information to a

personal computer (PC). This can be used with the sample BASIC program provided in Appendix D, or with a commercial

software program which supports the NGC-MAX protocol (such as Software Bisque's T

HESKY™).

A special cable is required between the NGC-MAX and your PC. You may use the information here to assemble your own

cable, or you may purchase one from JMI. While a 12 foot (3.6m) cable is standard, a custom length may be special

ordered.

The connector at the NGC-MAX side of the cable is an RJ11 or RJ12 phone-type plug using the center four contacts.

Reference the following diagram when inserting the wires from a flat 4-conductor cable:

YEL

GRN

RED

BLK

Wire insertion end of RJ11 or RJ12 male connector

The connector at the PC can be one of three varieties, depending upon your PC. Check the size of the PC's serial, or COM

port connector which you plan to use with the NGC-MAX. On IBM-compatible systems, it should be a 9 or 25 pin male

connector with two rows of pins. On Macintosh systems, it will be a round 8 pin female connector.

Once you have determined the proper connector, use the appropriate pinout below to complete the cable.

9-socket D-subminiature (female) 25-socket D-subminiature (female) 8-pin mini-DIN (male)

2 YEL TX 2 GRN RX 3 GRN RX

3 GRN RX 3 YEL TX 4 RED GRN

5 RED GND 7 RED GND 5 YEL TX

8 RED GND

Solder side of connectors

1 2 3 4 5

6 7 8 9

1 2 3 4 5 6 7 8 9 10 11 12 13

14 15 16 17 18 29 20 21 22 23 24 25

1 2

3 4 5

6 7 8

1 2 ... 9 10 11 12 13 14 15 16

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