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6

SHM-NPR PLUS

Connectors —

DTE side: Side-mounted DB25 male 

(ME739A-M-R2) or female (ME739A-F-R2);

Line side: Internal 3-screw terminal block 

(for one ground wire and two data 
wires) with cable-strain relief

Temperature Tolerance —

32 to 122°F (0 to 50°C)

Humidity Tolerance —

Up to 95% noncondensing

Enclosure —

High-impact plastic

Power —

+6 VDC, 25 milliwatts from Pin 2, 4, or 20 of 

the RS-232 interface

Size —

0.9"H x 2.1"W x 4.3"L (2.2 x 5.3 x 11 cm) 

Weight —

0.2 lb. (0.1 kg)

Approximate Transmission Range

WIRE GAUGE

RG62 COAX

19

22

24

M

FEET

M

FEET

M

FEET

M

FEET

500

1650

1000

3300

600

2000

400

1300

Summary of Contents for ME739A-F-R2

Page 1: ...the U S Call 877 877 BBOX outside U S call 724 746 5500 FREE technical support 24 hours a day 7 days a week Call 724 746 5500 or fax 724 746 0746 Mailing address Black Box Corporation 1000 Park Drive...

Page 2: ...operated in a commercial environment Operation of this equipment in a residential area is likely to cause interference in which case the user at his own expense will be required to take whatever measu...

Page 3: ...abo s tano mojado o cerca de una alberca etc 6 El aparato el ctrico debe ser usado nicamente con carritos o pedestales que sean recomendados por el fabricante 7 El aparato el ctrico debe ser montado a...

Page 4: ...contactos y recept culos donde salen del aparato 14 El equipo el ctrico debe ser limpiado nicamente de acuerdo a las recomendaciones del fabricante 15 En caso de existir una antena externa deber ser l...

Page 5: ...4 SHM NPR PLUS TRADEMARKS USED IN THIS MANUAL Any trademarks mentioned in this manual are acknowledged to be the property of the trademark owners...

Page 6: ...rt on next page Transmission Line 2 wire unconditioned telco type line or single coaxial cable Transmission Level 0 dBm Transmission Controls DCD always on DTR can control carrier DSR turns on immedia...

Page 7: ...ain relief Temperature Tolerance 32 to 122 F 0 to 50 C Humidity Tolerance Up to 95 noncondensing Enclosure High impact plastic Power 6 VDC 25 milliwatts from Pin 2 4 or 20 of the RS 232 interface Size...

Page 8: ...igure 2 1 below shows a typical application You can strap the SHM NPR Plus s transmit carrier to be constantly on or to follow be controlled by the DTR signal In controlled operation the local SHM NPR...

Page 9: ...operates without a power supply transformer To operate properly it must at least be connected to a DTE s Transmit Data TD Pin 2 Receive Data RD Pin 3 and Signal Ground SGND Pin 7 lines In compliance...

Page 10: ...ck The SHM NPR Plus isn t polarity sensitive It doesn t matter which of the LINE terminals you attach shield to and which one you attach the center wire to Don t attach anything to the SHM NPR Plus s...

Page 11: ...per to suit your application ON for carrier constantly on CNTR for carrier controlled by RTS 4 Press the two halves of the cover back together 5 Plug the SHM NPR Plus directly into the DTE s RS 232 se...

Page 12: ...ent and accurate assistance if you have a complete description including the nature and duration of the problem when the problem occurs the components vehicle devices etc involved in the problem any p...

Page 13: ...1000 Park Drive Lawrence PA 15055 1018 724 746 5500 Fax 724 746 0746 Copyright 1997 Black Box Corporation All rights reserved...

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