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15

CHAPTER 4: Configuration

4.2.1 H

ARDWARE

S

WITCHES

It is possible to override the Soft Switches and force the unit to use the Hardware
Switches. To do this, powerup the unit once with the Line Rate (SW1-1, 1-2, 1-3)
set to OFF, OFF, OFF. Then set the Hardware Switches as you require and
powerup the unit again.

Figure 2. The MicroCSU/DSU Front Card, bottom view, showing the

location of the DIP switches.

The sixteen DIP switches can be configured as either On or Off. Figure 3 shows the
orientation of the DIP switches with respect to ON/OFF positions.

SW2

SW1

Front

Interface
Driver
Board

MSD LSD

Address Rotary

Switches

«
...
16
17
18
19
20
...
»

Содержание MicroRACK RM208

Страница 1: ...1000 Park Drive Lawrence PA 15055 1018 724 746 5500 Fax 724 746 0746 Copyright 1999 Black Box Corporation All rights reserved...

Страница 2: ...7 days a week Call 724 746 5500 or fax 724 746 0746 Mail order Black Box Corporation 1000 Park Drive Lawrence PA 15055 1018 Web site www blackbox com E mail info blackbox com APRIL 1999 MT160A PS462A...

Страница 3: ......

Страница 4: ...gistered trademark of AT T MCI is a registered trademark of MCI Telecommunications Corporation Sprint is a registered trademark of U S Sprint Communications Ltd Any trademarks used in this manual are...

Страница 5: ...pment is 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 whate...

Страница 6: ...ato el ctrico debe ser montado a la pared o al techo s lo como sea recomendado por el fabricante 8 Servicio El usuario no debe intentar dar servicio al equipo el ctrico m s all a lo descrito en las in...

Страница 7: ...de existir una antena externa deber ser localizada lejos de las lineas de energia 16 El cable de corriente deber ser desconectado del cuando el equipo no sea usado por un largo periodo de tiempo 17 C...

Страница 8: ...s 21 4 3 Rear Card Configuration 29 4 3 1 MicroCSU DSU DB25 Rear Strap Settings 31 4 3 2 MicroCSU DSU V35 Rear Strap Settings 32 5 Installation 34 6 DDS Testing 38 6 1 Local Analog Loopback Testing 38...

Страница 9: ...V W X Y AA MT161C 25 1 9 11 12 14 18 20 21 24 25 Control Port Configuration and diagnostics Transmission Line 4 wire Applications DDS point to point or multipoint campus area point to point Indicators...

Страница 10: ...Source Internal Input Voltage 120 VAC Input Current Amps 200 mA Input Connector Type IEC 950 Connector Style On the CSU DSU rear cards Operating Temperature 32 to 114 F 0 to 45 C Storage Temperature 4...

Страница 11: ...Indicators Power DC input Size 3 5 H x 1 5 W x 7 D 8 9 x 3 8 x 17 8 cm Weight 1 lb 0 5 kg Power Supplies PS462A and PS463A FRONT POWER SUPPLY CARD Power Supply PS462A 24 VDC PS463A 12 VDC Input Voltag...

Страница 12: ...REAR POWER SUPPLY CARD Connection Cage clamp terminal block with DC In DC In Frame Ground Alarm Alarm C DC Out DC Out Wire 26 14 solid or stranded cable Alarm Opens when power is attached and closes...

Страница 13: ...will need one front card MT160A one rear card MT161C 25 or MT161C V35 one power supply PS460A PS461A PS462A or PS463A and one MicroRack RM202 RM204 RM208 or RM216 The MicroCSU DSU Cards are designed...

Страница 14: ...Power Supply PS463A MicroRack 12 VDC Power Supply RM202 MicroRack 2 RM204 MicroRack 4 RM208 MicroRack 8 RM216 MicroRack 16 2 2 Features Operates over dedicated digital lines Supports rates of 56 and...

Страница 15: ...ur terminal equipment and your application 3 2 Campus Area Short Haul Configuration The unit can also be used for campus area point to point short haul applications on private twisted pair wires Set t...

Страница 16: ...tting the DIP switches and using the control port 4 1 Front Panel LEDs There are ten front panel status LEDs that indicate the condition of the CSU DSU and the communication link Figure 1 shows the lo...

Страница 17: ...rom the remote MicroCSU DSU If NS is lit check for an unplugged cable broken wire or an incorrect Line Rate selection OS indicates Out of Service This means the MicroCSU DSU has received an Out of Ser...

Страница 18: ...2 1 3 set to OFF OFF OFF Then set the Hardware Switches as you require and powerup the unit again Figure 2 The MicroCSU DSU Front Card bottom view showing the location of the DIP switches The sixteen...

Страница 19: ...specify Line Rate Circuit Assurance Force RTS Character Length Data Format and DSR System Status Table 1 on the next page summarizes the SW1 switch settings including the factory defaults Following th...

Страница 20: ...nication circuit is established If Circuit Assurance is used enable it on only one end of the communication link SW1 4 Circuit Assurance Description On Enabled CTS will go low and the transmitter will...

Страница 21: ...or more 1 7 1 1 or more 1 7 None 2 On 11 bit 1 8 1 1 or more 1 9 None 1 or more Data Format The data format selection controls whether an async to sync conversion is performed SW1 7 Data Format On As...

Страница 22: ...SW2 5 Mode Off Network Switch SW2 6 Off Clock Switch SW2 7 Anti Streaming Timer On Disabled Switch SW2 8 CTS Display Off Normal Table 2 Summary of switch settings and factory defaults Rate Converter...

Страница 23: ...de Transmit Clock derived internally Anti Stream Timer The anti stream timer protects multidrop networks from a drop that is continuously transmitting If the terminal keeps RTS raised for more than 30...

Страница 24: ...he serial RS 232C port of a VT100 terminal or similar RS 232 DTE with terminal emulation to the EIA 561 control port on the control card 2 Power on the terminal and set its RS 232C port as follows 960...

Страница 25: ...e Switch Control In order to use software switches for configuration you must disable the hardware switch settings To do this use the following procedure NOTE If this procedure is omitted your softwar...

Страница 26: ...op 7 Rate Adapter DTE Rate E Local Line Loop Figure 6 Software Switch Menu For each screen described next selecting a numbered option and pressing RETURN stores that option setting and returns you to...

Страница 27: ...able Circuit Assurance on both ends of the circuit When Circuit Assurance is disabled the transmitter and CTS operate without regard to the receiver state CIRCUIT ASSURANCE MENU Esc to exit 1 Enable C...

Страница 28: ...nous data format For a synchronous DTE select the synchronous data format DATA FORMAT MENU Esc to exit 1 Asynchronous Data Format 2 Synchronous Data Format DEFAULT Figure 11 Data Format Menu NOTE The...

Страница 29: ...ate Converter DTE Rate Choosing option 7 in the Software Switch Menu takes you to the Rate Adapter DTE Rate Menu The Card rate converter adapts a 56 Kbps or 64 Kbps line rate to slower DTE data rates...

Страница 30: ...u The local and remote loopbacks on the Card can be controlled from the DTE interface by raising or lowering the LL and RL signals To allow the DTE to control these loopbacks in this manner enable thi...

Страница 31: ...for tail circuit applications in which the RS 232 or V 35 ports of two Cards are interconnected Switched 56 When using a Card with Switched 56 service select item 4 Anti Streaming Timer Choosing optio...

Страница 32: ...mal RTS CTS Delay DEFAULT 2 Extended RTS CTS Delay 4xNormal Figure 17 RTS CTS Delay Menu 4 3 Rear Card Configuration The MicroCSU DSU Front Card has two interface card options the MicroCSU DSU DB25 Re...

Страница 33: ...is configured by setting straps located on the PC board To configure the rear cards you must set the configuration straps Figure 19 shows the orientation of these straps Each strap can either be on p...

Страница 34: ...ed pair lines Figure 20 DB25 RJ 48S strap locations Table 3 provides an overview of interface strap functions for the rear interface cards Following this overview is a detailed description of each str...

Страница 35: ...cted SGND FRGND JB4 In the connected position this strap links DB25 pin 7 Signal Ground and frame ground In the open position pin 1 is lifted from frame ground JB4 Position 1 2 SGND Pin 7 and FRGND Co...

Страница 36: ...33 CHAPTER 4 Configuration SGND FRGND JB4 In the connected position this strap links Signal Ground and Frame Ground JB4 Position 1 2 SGND and FRGND Connected Position 2 3 SGND and FRGND Not Connected...

Страница 37: ...n power supply Measuring only 3 5 inches high the MicroRack is designed to occupy only 2U in a 19 inch rack Sturdy front handles allow the MicroRack 16 to be extracted and transported conveniently Fig...

Страница 38: ...ssis It should meet the rear card when it s almost all the way into the chassis 3 Push the front card gently into the multipin connector on the rear card 4 Secure the front card using the thumbscrews...

Страница 39: ...ower supply card is protected against accidental reversal of polarity If the DC Input LED does not light check the polarity of the input wiring 5 Connect the Alarm contacts as needed by your applicati...

Страница 40: ...tage Note The actual values on the switch may be 110 220 or 115 230 2 Verify that the existing fuse is the correct value 400 mA for the 120 volt 200 mA for the 240 volt 3 Connect the power supply cord...

Страница 41: ...ll appear on the terminal screen To perform an Analog Loopback test follow these steps 1 Activate Analog Loopback This may be done in one of two ways by moving the front panel toggle switch to Analog...

Страница 42: ...on the local terminal screen after having been passed to the remote MicroCSU DSU and looped back To perform an RDL test follow these steps 1 Activate RDL This may be done in two ways by moving the fr...

Страница 43: ...the receiving CSU DSU s red Error LED will blink sporadically NOTE For this test to function the 511 switch on both MicroCSU DSU modems must be on 2 If the test indicates no errors are present move t...

Страница 44: ...pair back to the central office on the TX pair While the CSU Loop is activated by the central office the TM light is illuminated 6 4 2 DSU LOOP The DSU Loop is activated when the central office sends...

Страница 45: ...performance from your MicroCSU DSU keep the following guidelines in mind Always use twisted pair wire this is not an option Use twisted pair wire with a capacitance of 20 pf ft or less Avoid twisted p...

Страница 46: ...S Interface is an RJ 48S modular jack Pin Signal 1 TX 2 TX 3 No connection 4 No connection 5 No connection 6 No connection 7 RX 8 RX B 2 M 34 Connector Terminal Interface Pin Signal B SGND Signal Grou...

Страница 47: ...RC Y TC AA TC B 3 DB25 Connector Terminal Interface Pins are assigned according to RS 232E and EIA 530 standards Pin Signal 1 Frame Ground 2 TD 3 RD 4 RTS 5 CTS 6 DSR 7 SGND Signal Ground 8 CD 9 RC 11...

Страница 48: ...e During Test Loops Appendix C Transmitter Clock Source During Test Loops Clock Analog Originating Receiving Mode Normal Loop Remote Loop Remote Loop Internal INT INT INT RC External EXT INT EXT EXT N...

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