Black Box MicroNTU G.703 AC Series Bedienungsanleitung

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: [email protected]

AUGUST 1998

MT240A-R2 EHN092-V35M

MT240A-48V-R2 EHN092-V35F

EHN092-530M EHN092-X21M

EHN092-530F EHN092-X21F

MicroNTU G.703 (AC)

MicroNTU G.703 (VDC)

MicroNTU G.703

Power

Network

Master

Clock

Test Mode

Loop

Loopback

Normal

MICRONTU G.703 (AC OR VDC)

FEDERAL COMMUNICATIONS COMMISSION

AND

CANADIAN DEPARTMENT OF COMMUNICATIONS

RADIO FREQUENCY INTERFERENCE STATEMENTS

This equipment generates, uses, and can radiate radio frequency energy and if not

installed and used properly, that is, in strict accordance with the manufacturer’s

instructions, may cause interference to radio communication. It has been tested

and found to comply with the limits for a Class A computing device in accordance

with the specifications in Subpart J of Part 15 of FCC rules, which are designed to

provide reasonable protection against such interference when the equipment 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 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 digital apparatus does not exceed the Class A limits for radio noise emission from digital

apparatus set out in the Radio Interference Regulation of the Canadian Department of

Communications.

Le présent appareil numérique n’émet pas de bruits radioélectriques dépassant les limites

applicables aux appareils numériques de la classe A prescrites dans le Règlement sur le

brouillage radioélectrique publié par le ministère des Communications du Canada.

This unit is certified.

The CE symbol on your MicroNTU G.703 indicates that it is in compliance with

the Electromagnetic Compatibility (EMC) directive and the Low Voltage Directive

(LVD) of the Union European (EU).

MICRONTU G.703 (AC OR VDC)

NORMAS OFICIALES MEXICANAS (NOM)

ELECTRICAL SAFETY STATEMENT

INSTRUCCIONES DE SEGURIDAD

1. Todas las instrucciones de seguridad y operación deberán ser leídas antes de

que el aparato eléctrico sea operado.

2. Las instrucciones de seguridad y operación deberán ser guardadas para

referencia futura.

3. Todas las advertencias en el aparato eléctrico y en sus instrucciones de

operación deben ser respetadas.

4. Todas las instrucciones de operación y uso deben ser seguidas.

5. El aparato eléctrico no deberá ser usado cerca del agua—por ejemplo, cerca

de la tina de baño, lavabo, 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 otro servicio deberá ser

referido a personal de servicio calificado.

9. El aparato eléctrico debe ser situado de tal manera que su posición no

interfiera su uso. La colocación del aparato eléctrico sobre una cama, sofá,

alfombra o superficie similar puede bloquea la ventilación, no se debe colocar

en libreros o gabinetes que impidan el flujo de aire por los orificios de

ventilación.

10. El equipo eléctrico deber ser situado fuera del alcance de fuentes de calor

como radiadores, registros de calor, estufas u otros aparatos (incluyendo

amplificadores) que producen calor.

11. El aparato eléctrico deberá ser connectado a una fuente de poder sólo del

tipo descrito en el instructivo de operación, o como se indique en el aparato.

MICRONTU G.703 (AC OR VDC)

12. Precaución debe ser tomada de tal manera que la tierra fisica y la polarización

del equipo no sea eliminada.

13. Los cables de la fuente de poder deben ser guiados de tal manera que no

sean pisados ni pellizcados por objetos colocados sobre o contra ellos,

poniendo particular atención a los 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 que objectos liquidos no sean

derramados sobre la cubierta u orificios de ventilación.

18. Servicio por personal calificado deberá ser provisto cuando:

A: El cable de poder o el contacto ha sido dañado; u

B: Objectos han caído o líquido ha sido derramado dentro del aparato; o

C: El aparato ha sido expuesto a la lluvia; o

D: El aparato parece no operar normalmente o muestra un cambio en su

desempeño; o

E: El aparato ha sido tirado o su cubierta ha sido dañada.

MICRONTU G.703 (AC OR VDC)

Contents

1. Specifications..............................................................................................................5

2. Introduction ...............................................................................................................6

3. Configuration.............................................................................................................7

3.1 External DIP-Switch Settings..............................................................................7

3.2 Internal Jumper Settings ..................................................................................11

4. Installation................................................................................................................16

4.1 Connection to the G.703 Network ..................................................................16

4.1.1 Twisted-Pair (120-Ohm) Connection....................................................16

4.1.2 Dual Coax BNC (75-Ohm) Connection ...............................................17

4.2 Connection to the Terminal Device................................................................17

4.3 Connection to the Power Source.....................................................................17

5. Operation .................................................................................................................18

5.1 Power-Up ...........................................................................................................18

5.2 LEDs...................................................................................................................18

5.3 Loopback Test (LAL).......................................................................................19

Appendix A. Pin Configurations................................................................................21

Appendix B. Factory Parts and Accessories ...............................................................22

B.1 Basic Standalone Units.....................................................................................22

B.2 Terminal (DTE) Interface Cables ...................................................................22

Appendix C. Safety Warnings and Requirements.....................................................23

MICRONTU G.703 (AC OR VDC)

1. Specifications

Network Interface G.703

Network Rate 2.048 Mbps

Network Connectors Two BNC (75-ohm) and one modular RJ-45

connector (120-ohm)

Terminal Interface EIA RS-530 (RS-422), X.21, V.35 on UD-26

using cables EHN092

Terminal Rate 2.048 Mbps (all models); 1.024 Mbps, 512 Kbps,

256 Kbps (standalone only)

Terminal Connector UD-26F

Diagnostics Loopback Test

Indicators LEDs for power, network, master clock, and

loopback test

Clocking G.703: Internal, external, network (receive

loop); DTE interface: Internal only

Power MT240A-R2: 115/230 VAC (switch-selectable),

50/60 Hz; MT240A-48V-R2: 48 VDC

Receiver Sensitivity -10 dB (0 dB = 2.4V)

Operating Temperature 32° to 140°F (0° to 60°C)

Humidity 5 to 95%, noncondensing

Altitude Up to 15,000 feet (4570 m)

Size 1.6"H x 7.3"W x 6.6"D (4.1 x 18.6 x 16.8 cm)

Weight 2 lb. (0.9 kg)

MICRONTU G.703 (AC OR VDC)

2. Introduction

The MicroNTU G.703 performs the tasks of three separate devices:

1. As a modem, the MicroNTU G.703 receives unstructured, synchronous

2.048-Mbps data from a G.703 network and sends it out of its DTE port

(configured as DCE).

2. As an interface converter, the MicroNTU G.703 accepts 120-ohm twisted-pair or

75-ohm dual coax connections (both types of interfaces provided). Then it

converts the signals to EIA-530 (RS-422), V.35, or X.21 format (switchable) on a

UD-26 connector.

3. As a rate adapter, the MicroNTU G.703 lets a lower-bandwidth device—

256 Kbps, 512 Kbps, or 1.024 Mbps—connect to a 2.048-Mbps G.703 link.

The MicroNTU G.703 supports internal, external, or network (receive loop)

clocking on its G.703 interface. Loopback test is built-in, and front-panel LEDs

monitor power, network, master clock, and test loop. Several power-supply options

are available:

MT240A-R2 115/230 VAC (switch-selectable)

MT240A-48V-R2 48 VDC

MT245ARackmount Card

MT246ARackmount Card

RM202, 204, 208, 216 Racks for cards 115/230 VAC (switch-selectable)

MICRONTU G.703 (AC OR VDC)

3. Configuration

The MicroNTU G.703 is equipped with three sets of eight DIP switches (externally

accessible), as well as seven jumpers (internal). These DIP switches and jumpers

allow configuration of clocking, data rate, test and terminal-interface options. The

MicroNTU G.703 (AC) is also equipped with an internal switch that allows

selection of 115- or 230-VAC power inputs. (This switch is not present in the

MT240A-48V-R2.)

3.1 External DIP-Switch Settings

The MicroNTU G.703’s DIP switches are located on the underside of the unit (see

Figure 3-1). Figure 3-2 shows the orientation of the switch set. The switches are

grouped into two eight-switch sets, and are externally accessible from the

underside of the MicroNTU G.703. All possible settings for the MicroNTU G.703’s

DIP switches are presented in the summary table and descriptions on the following

pages. If you have any questions about configuration, call for technical support.

Figure 3-1. DIP-switch locations.

Switch Set S2

Switch Set S1

OFF

Figure 3-2. Closeup of configuration switches.

Table 3-1. Summary of DIP-switch default settings for set S1

S1 Summary Table

Position Function Factory Default

S1-1 X.21/EIA-530 Off EIA-530 or V.35*

On X.21*

S1-2 Not Used Off

S1-3 Not Used Off

S1-4 Rate Adaptation Off 2.048 Mbps

S1-5 Rate Adaptation Off

S1-6 Data Inversion Off Not Inverted

S1-7 Clock Master/Slave On Master

S1-8 Test Enable Off Front Panel

*Used with S2-1 and S2-2. See the table on page 10.

SWITCH SET S1

The configuration switches on S1 set clocking, rate adaptation, loopback enable,

data invert, and interface (see also Switch S2). The default settings are summarized

in Table 3-1.

S1-1: Terminal Interface (works in conjunction with Switch S2)

Set Switch S1-1 (as well as S2-1 and S2-2) to determine whether the signals passed

between the MicroNTU G.703 and the terminal device will follow the EIA-530

(RS-422), CCITT X.21, or CCITT V.35 standard. If S2-1 and S2-2 are set for

“EIA-530/X.21,” then the setting for S1-1 determines which of those two interfaces

is selected. Note: If S2-1 and S2-2 are set for “V.35,” switch S1-1 must be set to

“Off.” Regardless of the pinout standard chosen, the physical connector is a

female UD-26.

12345678

OFF

MICRONTU G.703 (AC OR VDC)

S1-1 Setting

Off EIA-530 (RS-422) interface

On X.21 interface

S1-2 and S1-3: Not Used

S1-2 and S1-3 are not used.

S1-4 and S1-5: Rate Adaptation

Set Switches S1-4 and S1-5 together to allow the MicroNTU G.703 to adapt to

terminal devices that run at data rates less than 2.048 Mbps. (The network rate

remains 2.048 Mbps regardless of the terminal-rate adaptation setting.) The setting

you select must match the data rate of your terminal device.

S1-4 S1-5 Setting

Off Off 2.048 Mbps

On Off 1.024 Mbps

Off On 512 Kbps

On On 256 Kbps

S1-6: Data Inversion

Set Switch S1-6 to determine whether or not the data stream from the local DTE is

inverted within the MicroNTU G.703 before being passed to the G.703 network.

Inverting the data stream may be necessary when the MicroNTU G.703 is being

used with an embedded G.703 device that inverts the data on the remote end.

Normally, data inversion is not necessary.

S1-6 Setting

On Data inverted

Off Data not inverted

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