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CHAPTER 2: Introduction

• Sync SHM-NPR MP/RJ-11 (ME734A-M)

• Sync SHM-NPR MP/RJ-11 (ME734A-F)

• Sync SHM-NPR MP/RJ-11 (ME734A-MSP)

• Sync SHM-NPR MP/RJ-11 (ME734A-FSP)

• Sync SHM-NPR MP/RJ-45 (ME735A-M)

• Sync SHM-NPR MP/RJ-45 (ME735A-F)

• Sync SHM-NPR MP/RJ-45 with Surge Protection

(ME735A-MSP)

• Sync SHM-NPR MP/RJ-45 with Surge Protection

(ME735A-FSP)

Features

• New design uses a custom VLSI chip and

surface-mount technology.

• Internal, external, or receive loopback clocks

(switch-selected).

• Speeds up to 19.2 kbps.

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Содержание ME729A-FSP

Страница 1: ...R MP CUSTOMER SUPPORT INFORMATION Order toll free in 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 Lawrence PA 15055 1018 Web site www blackbox com E mail info blackbox com ...

Страница 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 measures may be necessary to correct the interference Changes or modifications not expressly approved by the party responsible for compliance could void the user s authority to operate the equipment This ...

Страница 3: ...vabo sótano mojado o cerca de una alberca etc 6 El aparato eléctrico debe ser usado únicamente con carritos o pedestales que sean recomendados por el fabricante 7 El aparato eléctrico debe ser montado a la pared o al techo sólo como sea recomendado por el fabricante 8 Servicio El usuario no debe intentar dar servicio al equipo eléctrico más allá a lo descrito en las instrucciones de operación Todo...

Страница 4: ...contactos y receptáculos donde salen del aparato 14 El equipo eléctrico debe ser limpiado únicamente de acuerdo a las recomendaciones del fabricante 15 En caso de existir una antena externa deberá ser localizada lejos de las lineas de energia 16 El cable de corriente deberá ser desconectado del cuando el equipo no sea usado por un largo periodo de tiempo 17 Cuidado debe ser tomado de tal manera qu...

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

Страница 6: ...1 Connection to the Twisted Pair Interface 15 4 1 1 Twisted Pair Connection Using RJ 11 or RJ 45 16 4 1 2 Twisted Pair Connection Using Terminal Blocks 18 4 2 Connection to the RS 232 Interface 26 4 2 1 Connection to a DTE Device 26 4 2 2 Connection to a DCE Device 26 4 3 Operating the Sync SHM NPR MP 28 Appendix RS 232 Pin Configurations 29 ...

Страница 7: ... 0 mi 8 0 km 1200 11 0 mi 17 7 km 8 5 mi 13 7 km 6 0 mi 9 7 km Surge Protection 600W power dissipation at 1 ms and response time less than 1 picosecond Control Signals RTS CTS delay of 7 or 53 ms Carrier continuous or controlled by RTS DCD turns On after recognizing the receive signal Clocking Internal external or loopback derived from the receive signal Operation 4 wire unconditioned twisted pair...

Страница 8: ...ired uses ultra low power 6 volts required from EIA data and control signals Pins 2 4 9 and 20 in DCE mode the Sync SHM NPR MP does not operate in DTE mode Size 2 7 H x 2 1 W x 0 7 D 6 9 x 5 3 x 1 8 cm Weight 0 1 lb 0 05 kg NOTE The Sync SHM NPR MP must be used in pairs The Sync SHM NPR MP is compatible with the Mini Driver 4W S Series ME750A ME754A ME756A ...

Страница 9: ...our miles 6 4 km at 19 2 kbps over two 22 AWG twisted pair wires conservatively rated The SHM NPR operates at full or half duplex and uses three clocking methods internal external and received loopback It s also transformer isolated for ground loop protection You can select RTS CTS delay of 7 or 53 ms and carrier status of constantly on or RTS controlled Ten models are available Sync SHM NPR MP DB...

Страница 10: ...1 ME734A FSP Sync SHM NPR MP RJ 45 ME735A M Sync SHM NPR MP RJ 45 ME735A F Sync SHM NPR MP RJ 45 with Surge Protection ME735A MSP Sync SHM NPR MP RJ 45 with Surge Protection ME735A FSP Features New design uses a custom VLSI chip and surface mount technology Internal external or receive loopback clocks switch selected Speeds up to 19 2 kbps ...

Страница 11: ...tions for easy daisychain installation Full or half duplex operation Transformer DC isolated Ideal for multipoint configurations Built in high speed surge protection with power handling capacity of 600W per wire at 1 ms Compatible with the Mini Driver 4W S Series ME750A through ME754A and ME756A ...

Страница 12: ...and explains all possible switch configurations 3 1 Switch Locations For your convenience all configuration switches are located on a SIP single in line package mounted on the PC board Figure 3 1 shows the location of the SIP on the board For instructions on opening the SHM NPR case see Section 4 1 2 Figure 3 1 Switch Locations Control Switches Surge Suppressors 1030S only Terminal Block Patton VL...

Страница 13: ...esented in Table 3 1 If you have additional questions about configuration contact technical support Table 3 1 Switch summary table Position Function Factory default Switch 1 Not used Off Not used Switch 2 Carrier enable On Constant Carrier Switch 3 Transmit clock Off Internal Switch 4 Transmit clock On clock Switch 5 RTS CTS delay On 7 ms delay Switch 6 Data rate On Switch 7 Data rate Off 9 600 bp...

Страница 14: ...is controlled by RTS Switch 2 Setting On Constant carrier Default Off Controlled by RTS SWITCHES 3 AND 4 TRANSMIT CLOCK Use switches 3 and 4 together to specify the clocking method The SHM NPR can provide an internal clock pin 15 receive an external clock from pin 24 or loop back a receive clock Switch 3 Switch 4 Setting On On External clock On Off External clock Off On Internal clock Default Off ...

Страница 15: ...e of environment either a 7 or 53 ms delay can be selected Switch 5 Setting On 7 ms Default Off 53 ms SWITCHES 6 7 AND 8 DATA RATE Switches 6 through 8 are set in combination to allow the SHM NPR to support data rates from 1 2 to 19 2 kbps Switch 6 Switch 7 Switch 8 Setting On On On 1 2 kbps On On Off 2 4 kbps On Off On 4 8 kbps Off On On 7 2 kbps On Off Off 9 6 kbps Off On Off 14 4 kbps Off Off O...

Страница 16: ...evices at distances to 11 miles 17 7 km and data rates to 19 2 kbps There are two essential requirements for installing the Sync SHM NPR 1 These units work in pairs Therefore you must have one Sync SHM NPR at each end of a two twisted pair interface 2 To function properly the Sync SHM NPR needs two twisted pairs of metallic wire These pairs must be unconditioned dry metallic wire between 19 and 26...

Страница 17: ... 45 The RJ 11 and RJ 45 jacks on the SHM NPR s twisted pair interface are pre wired for a standard telco wiring environment The signal pin relationships are shown in Figure 4 1 RJ 11 Signal RJ 45 Signal 1 GND1 1 N C 2 RCV2 2 GND1 3 XMT 3 RCV2 4 XMT 4 XMT 5 RCV 5 XMT 6 GND1 6 RCV 7 GND1 8 N C 1 Connection to ground is optional 2 The Sync SHM NPR is not polarity sensitive Figure 4 1 RJ 11 and RJ 45 ...

Страница 18: ...lar method when you use an RJ 45 connector or a combination of both RJ 11 and RJ 45 SIGNAL PIN COLOR2 COLORPIN SIGNAL GND1 1 Blue White 6 GND RCV3 2 Yellow Red 4 XMT XMT 3 Green Black 5 RCV XMT 4 Red Yellow 2 RCV RCV 5 Black Green 3 XMT GND 6 White Blue 1 GND 1 Connection to ground is optional 2 Standard color codes yours maybe different 3 The Sync SHM NPR is not sensitive to polarity Figure 4 2 C...

Страница 19: ...he instructions on the following pages will tell you how to open the case connect the bare wires to the terminal blocks and fasten the strain relief collar in place so that the wires won t pull loose 1 Open the unit by gently inserting a screwdriver between the DB25 connector and the lip of the plastic case see Figure 4 3 You don t have to worry about breaking the plastic but be careful not the be...

Страница 20: ...19 CHAPTER 4 Installation Figure 4 3 Opening the Sync SHM NPR Once the unit has been opened you will be able to see the terminal blocks located at the rear of the PC board ...

Страница 21: ...wires about 0 25 Figure 4 5 Stripping the Insulation on Each of the Two Twisted Pair Wires 4 Connect one pair of wires to the two XMT transmit poles on the terminal block The Sync SHM NPR is not polarity sensitive so either wire may connect to either pole 5 Connect the other pair of wires to the two RCV receive poles on the terminal block The Sync SHM NPR is not polarity sensitive so either wire m...

Страница 22: ... RCV One pair XMT RCV G To Shield Optional G RCV XMT One pair RCV XMT Figure 4 6 Two Pair Crossover Cable Configuration 6 If there is a shield around the telephone cable it may be connected to G on the terminal block To avoid ground loops we recommend connecting the shield at the computer end only A ground wire is not necessary for proper operation of the Sync SHM NPR ...

Страница 23: ...22 SYNC SHM NPR MP 7 When you finish connecting the wires to the terminal block the assembly should resemble Figure 4 7 Figure 4 7 Terminal Block with Wires Connected RCV G XMT ...

Страница 24: ...ef assembly on either side of the telephone wire and press together very lightly Slide the assembly so that it is about two inches 5 cm from the terminal posts and press together firmly Figure 4 8 Pressing Together the Two Halves of the Strain Relief Assembly RCV G XMT ...

Страница 25: ...Insert the strain relief assembly with the wire going through it into the slot in the bottom half of the modem case and set it into the recess in the case Figure 4 9 Inserting the Strain Relief Assembly into the Modem Case ...

Страница 26: ...case together yet Figure 4 10 Placing the Top Half of the Case Over the Strain Relief Assembly 11 Insert one captive screw through a saddle washer and then insert the entire piece through the hole in the DB25 end of the case Snap that side of the case closed Repeat the process for the other side This completes the cable installation ...

Страница 27: ...SHM NPR is interface powered a direct connection to the RS 232 DTE port is preferred If you must use a cable to connect the Sync SHM NPR to the DTE port make sure it is a straight through cable of the shortest possible length we recommend 6 feet 1 8 m or less 4 2 2 CONNECTION TO A DCE DEVICE Since the Sync SHM NPR is wired as a DCE you cannot connect it directly to another DCE such as a modem mult...

Страница 28: ...to Sync SHM NPR MP1 DCE Device DB25 Pin No DB25 Pin No 1 1 2 2 3 3 4 8 8 4 6 20 20 6 17 24 24 17 7 7 1 When connecting to another DCE device the Sync SHM NPR MP should be configured for external clock see Section 3 2 Figure 4 11 Null Modem Cable Wiring ...

Страница 29: ...stalled it should operate transparently as if it were a standard cable connection Operating power is derived from the RS 232 data and control signals there is no ON OFF switch All data signals from the RS 232 interface are passed straight through All control signals from the RS 232 interface are looped back ...

Страница 30: ... Data Set Ready 7 SG Signal Ground 8 DCD Data Carrier Detect To Mini Driver From Mini Driver To Mini Driver From Mini Driver From Mini Driver From Mini Driver To Mini Driver Receiver Timing 17 Transmitter Timing 15 DIRECTION STANDARD DCE SETTING DIRECTION To Mini Driver To Mini Driver To Sync SHM NPR To Sync SHM NPR To Sync SHM NPR To Sync SHM NPR To Sync SHM NPR From Sync SHM NPR From Sync SHM NP...

Страница 31: ...1000 Park Drive Lawrence PA 15055 1018 724 746 5500 Fax 724 746 0746 Copyright 2000 Black Box Corporation All rights reserved ...

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