Patton electronics 1180/35 Bedienungsanleitung

USER

MANUAL

MODEL 1180/35

Single Fiber V.35

Short Range Modem

SALES OFFICE

(301) 975-1000

TECHNICAL SUPPORT

(301) 975-1007

http://www.patton.com

Part# 07M1180/35-B

Doc# 017071UB

Revised 4/20/98

An ISO-9001

Certified Company

1.0 WARRANTY INFORMATION

Patton Electronics warrants all Model 1180/35 components to be

free from defects, and will—at our option—repair or replace the product

should it fail within one year from the first date of shipment.

This warranty is limited to defects in workmanship or materials, and

does not cover customer damage, abuse, or unauthorized modification.

If this product fails or does not perform as warranted, your sole

recourse shall be repair or replacement as described above. Under no

condition shall Patton Electronics be liable for any damages incurred

by the use of this product. These damages include, but are not limited

to, the following: lost profits, lost savings, and incidental or

consequential damages arising from the use of or inability to use this

product. Patton Electronics specifically disclaims all other warranties,

expressed or implied, and the installation or use of this product shall be

deemed an acceptance of these terms by the user.

1.1 RADIO AND TV INTERFERENCE

The Model 1180/35 generates and uses 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 and

television reception. This unit 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 from such interference in a

commercial installation. However, there is no guarantee that

interference will not occur in a particular installation. If this unit does

cause interference to radio or television reception, which can be

determined by turning the power off, the user is encouraged to try to

correct the interference by one or more of the following measures:

moving the computing equipment away from the receiver, re-orienting

the receiving antenna, and/or plugging the receiving equipment into a

different AC outlet (such that the computing equipment and receiver are

on different branches).

1.2 CE NOTICE

The CE symbol on your Patton Electronics equipment indicates

that it is in compliance with the Electromagnetic Compatibility (EMC)

directive and the Low Voltage Directive (LVD) of the Union European

(EU). A Certificate of Compliance is available by contacting Technical

Services.

1.3 SERVICE

All warranty and nonwarranty repairs must be returned freight

prepaid and insured to Patton Electronics. All returns must have a

Return Materials Authorization number on the outside of the shipping

container. This number may be obtained from Patton Electronics

Technical Services at:

telephone: (301) 975-1007

email: [email protected]

web address: http://www.patton.com

NOTE: Packages received without an RMA number will not be

accepted.

Patton Electronics' technical staff is also available to answer any

questions that might arise concerning the installation or use of your

Patton Model 1180/35. Technical Service hours: 8AM to 5PM EST,

Monday through Friday.

3.0 CONFIGURATION

The Model 1180/35 uses an eight switch package that allow s

configuration to a wide range of synchronous applications. Because all

eight switches are externally accessible (see Figures 1 and 2, below),

there is no need to open the Model 1180/35's case for configuration.

3.1 DETAILED SWITCH SETTINGS

The Model 1180/35’s configuration switches set data rate

(distance), sync clock source, and DTE control of the RDL and LAL test

modes. The table on the following page summarizes the default switch

settings for the Model 1180/35. Following this table is a detailed

description of each switch function.

2.0 GENERAL INFORMATION

Thank you for your purchase of this Patton Electronics product.

This product has been thoroughly inspected by Patton's qualified

technicians. If any questions or problems arise during installation or

use of this product, please do not hesitate to contact Patton Electronics

Technical Support at (301) 975-1007.

2.1 FEATURES

• Communicates full duplex over a single multimode fiber

• Synchronous data rates to 256 Kbps

• Hardware and software flow control support

• Internal, external or received recover clock

• Distances to 1.5 miles (over 64 Kbps)

• Distances to 3 miles (64 Kbps and under)

• ST or SMA fiber connectors

• V.35 DTE interface with female M/34

• Local and remote loopback diagnostics

• Tri-State front panel LED indicators

• Made in USA

2.2 DESCRIPTION

The Model 1180/35 Single Fiber V.35 Short Range Modem

accomplishes full duplex, point-to-point V.35 communication over a

single multimode fiber. Supporting synchronous data rates up to 256

Kbps, the Model 1180/35 automatically adapts to hardware or software

flow control, and can be set for internal, external or received recover

clocking.

The Model 1180/35 features extended data rate circuitry that allows

for single fiber distances up to 1.5 miles at data rates above 64 kbps, or

3 miles at data rates below 64 kbps. Both local and remote loopback

tests can be activated from the front panel, or from the V.35 interface.

The Model 1180/35 front panel incorporates LED indicators for TD, RD,

RTS, CD and power.

Optical fiber may be connected to the Model 1180/35 using an ST or

SMA type interface. The V.35 DTE interface on the Model 1180/35 is a

female M/34 connector.

3 4

OFF

Figure 2. Close-up of 1180/35 DIP Wwitch Package Showing OFF/ON Positions

FRONT

REAR

Figure 1. Switch Locations Underneath Model 1180/35

S1-5 and S1-6: Clock Source

Switches S1-1 and S1-2 are set in combination to determine the

source of the transmit clock for the Model 1180/35.

S1-5 S1-6 Setting

Off Off Received Recover Clock

On Off Internal Clock

Off On External Clock

On On Internal Clock

S1-7: DTE Control of RDL

The setting for switch S1-7 determines whether the V.35 DTE can

activate the RDL test by raising pin L. If DTE Control of RDL is

enabled, control from the front panel is disabled if there is no DTE

connected.

NOTE: If DTE control is not avialable, set Switch S1-7 to off.

S1-7 Setting

On DTE control of RDL enabled

Off DTE control of RDL disabled

S1-8: DTE Control of LAL

The setting for switch S1-8 determines whether the V.35 DTE can

activate the LAL test by raising pin N. If DTE Control of LAL is enabled,

control from the front panel is disabled if there is no DTE connected.

NOTE: If DTE control is not available, set Switch S1-8 to off.

S1-8 Setting

On DTE control of LAL enabled

Off DTE control of LAL disabled

Switches S1-1 though S1-4: Data Rate (Distance)

Switches S1-1 through S1-4 are set in combination to determine

two configuration parameters: synchronous data rate and maximum

distance. Maximum distance is determined by the space between data

packets in the communication stream between two Model 1180/35s.

The "2X" setting doubles the space between data packets, when

compared with the normal "1X" setting, and therefore doubles the

maximum distance. A setting of "2X" facilitates communication

distances up to 3 miles, and is available at certain data rates up to 64

kbps. A setting of "1X" supports communication at the normal distance

of 1.5 miles.

S1-1 S1-2 S1-3 S1-4 Data Rate (Distance)

On On On Off 2.4 (1X)

Off On On On 9.6 (2X)

On Off On Off 14.4 (1X)

On Off On On 19.2 (2X)

Off Off On Off 28.8 (1X)

Off Off On On 38.4 (2X)

On On Off On 48.0 (2X)

Off On Off Off 56.0 (1X)

Off Off Off On 64.0 (2X)

Off On On Off 72.0 (1X)

Off Off Off Off 128.0 (1X)

On On Off Off 144.0 (1X)

Off On Off On 192.0 (1X)

On On On On 256.0 (1X)

S1 SUMMARY TABLE

Position Function Factory Default

S1-1 Data Rate (Distance) Off

S1-2 Data Rate (Distance) Off

S1-3 Data Rate (Distance) Off

S1-4 Data Rate (Distance) On

S1-5 Clock Source On

S1-6 Clock Source On

S1-7 DTE Control of RDL Off Disabled

S1-8 DTE Control of LAL Off Disabled

}

Internal

}

64 kbps (2x)

5.0 OPERATION

Once you have configured each Model 1180/35 properly and

connected the fiber and V.35 cables, you are ready to operate the units.

This section describes reading the LED status monitors, power-up, and

using the built-in loopback test modes.

5.1 LED STATUS MONITORS

The Model 1180/35 features six front panel status LEDs that

indicate the condition of the modem and communication link. Figure 6

(below) shows the front panel location of each LED.

• The green "Power" LED glows if power is applied to the modem.

• The green "Test Modes" LED indicates that the modem is in a test

mode (local analog or remote digital).

• The "TD" and "RD" indicators blink red and green with data activity.

Red indicates a low V.35 logic level, green indicates a high V.35

logic level. Note: V.35 devices idle in a low state, so the LED will

glow red if the connections are correct and the V.35 device is in an

idle state.

• The "RTS" and "CD" indicators are also tri-state and will glow red for

a "low" signal or green for a "high" signal. RTS lights for an

incoming signal on V.35 pin C. CD lights for an incoming signal on

the line side, and the resulting output signal on V.35 pin F.

4.0 INSTALLATION

The Model 1180/35 is easy to install. After configuring the DIP

switches, simply connect the single fiber cable, hook up the V.35

interface, and plug the power supply adapter into the 1180/35. Figure 4

(below) shows the location of the interface connections on the Model

1180/35 rear panel.

4.1 SINGLE FIBER CONNECTION

These short range modems are designed to work in pairs. You will

need one at each end of single multi-mode fiber cable. Depending

upon the data rate setting you select, your cable may be a maximum of

1.5 or 3 miles long. The fiber cable connects to each Model 1180/35

using either an ST or an SMA connector. Figure 5 (below) shows a

close-up of both connector types.

4.2 V.35 CONNECTION

The Model 1180/35 is configured as a DCE. Therefore it “wants” to

DTE hardware such as a PC, host or terminal, using a straight through

V.35 cable. Connecting the Model 1180/35 to DCE hardware such as a

modem, multiplexer, or printer, requires a null modem V.35 cable.

Contact Patton Technical Support at (301) 975-1007 for more

information about constructing the appropriate null modem cable for

your application.

Figure 6. Front view of Model 1180/35

Figure 4. Rear Panel of Model 1180/35 Showing Interface Connections

Figure 5. Close-up of ST and SMA Connections

alignment pin

faces down

5.2 POWER-UP / SYNCHRONIZATION

Apply AC power to the Model 1180/35 by plugging the separate AC

power adapter first into the rear panel outlet of the Model 1180/35 and

then into an acceptable AC power outlet. There is no power switch on

the Model 1180/35: When the "power" LED is glowing steady, the

Model 1180/35 is powered up. Note: be sure the front panel toggle

switch on both Model 1180/35s is set to NORMAL.

After both the local and remote 1180/35s are powered up, a

synchronization process must occur between the two modems before a

link can be established. Depending upon a number of factors, this

synchronization process can take as long as 60 seconds. Any time one

of the Model 1180/35s loses power (in a lightning storm, for example),

the local and remote units must re-synchronize before they can resume

data transmission. Note: If your application cannot tolerate a 60

second synchronization phase, turning the front panel "Test Modes"

switch to REMOTE and then back to NORMAL will synchronize the

units within 250 mS.

When both Model 1180/35s are powered up and passing data

normally, the following LED conditions will exist:

• PWR = green

• TD & RD = flashing red and green

• RTS & DCD = green

• TEST = off

5.3 LOOPBACK TEST MODES

The Model 1180/35 offers two loopback test modes to evaluate the

condition of the modems and the communication link. These tests are

activated from the front panel.

5.3.1 LOCAL LOOPBACK

The local loopback test checks the operation of the local Model

1180/35, and is performed separately on each unit. Any data sent to

the local Model 1180/35 in this test mode will be echoed back to the

user device. For example, characters typed on the keyboard of a

terminal will appear on the terminal screen.

(continued)

To perform a local loopback test, follow these steps:

A. Activate local loopback by moving the front panel toggle switch

DOWN to "Local". Once local loopback is activated, the Model

1180/35 transmit output is connected to its own receiver. The "test"

LED should glow. (Note: Even though the local Model 1180/35

cannot communicate with the remote Model 1180/35 in this mode,

the synchronized connection between the two modems remains

intact).

B. Verify that the data terminal equipment is operating properly and

can be used for a test. If a fault is indicated, call a technician or

replace the unit.

C. Perform a BERT (bit error rate) test on each unit. If the BERT test

equipment indicates no faults and the data terminal indicates a

fault, follow the manufacturer's checkout procedures for the data

terminal. Also check the V.35 interface cable between the terminal

and the Model 1180/35.

5.3.2 REMOTE LOOPBACK

The remote loopback test checks the performance of the local and

remote Model 1180/35s, and the communication link between them

(see figure 7, on the following page). Any characters sent to the remote

1180/35 in this test mode will be returned back to the originating device.

For example, characters typed on the keyboard of the local terminal will

appear on the local terminal screen after having been passed to the

remote Model 1180/35 and looped back. To perform a remote loopback

test, follow these steps:

A. Activate remote loopback by moving the front panel toggle switch

UP to "Remote". The "test" LED should glow.

B. Perform a BERT (bit error rate) test on the system.

C. If the BERT test equipment indicates a fault, and the local

loopback test was successful for both Model 1180/35s, there may

be a problem with the fiber communication line connecting the

modems. You should test the fiber line for proper connections and

continuity.

9 10

APPENDIX A

TROUBLESHOOTING

SYMPTOM PROBLEM SOLUTION

5.4 POWER-DOWN

Turn off the Model 1180/35 by simply unplugging the AC power

adapter from the wall. There is no power switch on the Model 1180/35.

LEDs do not light

when AC power

transformer is

plugged into wall

Carrier Detect (CD)

LED is low

Carrier Detect (CD)

LED is high, but

1180/35s are not

communicating

1. Loose power

connection

2. Outlet is defective

3. AC power cord is

defective

4. AC transformer is

not plugged into the

Model 1180/35

1. If CD is low,

possible

synchronization loss

2. Test Mode switch is

in the wrong position

3. DIP switches are set

improperly

4. Fiber link is

connected improperly

5. V.35 connections

are faulty or cables are

pinned wrong

1. Make sure the AC

connection is flush

2. Try a different outlet

3. Remove the cord

from the outlet and

check for continuity

4. Have another cup of

coffee!

1. Check for ongoing

power loss or break in

fiber if CD does not go

high within 60

seconds

2. Be sure the Test

Mode switch is set to

NORMAL on both

Model 1180/35s

3. Check all DIP switch

settings, esp. Reset

and Data Rate,

against those in

Section 3; make sure

both 1180/35s are set

the same way

4. Check the ST or

SMA connection on the

back of both 1180/35s

5. Check V.35 cable

continuity and pinning

11 12

Figure 7. Local and Remote Loopback Test Modes

APPENDIX B

PATTON MODEL 1180/35 SPECIFICATIONS

Transmission Format: Synchronous

Range: 1.5 miles at all data rates, 3 miles at

specified data rates

Data rates: 2.4, 9.6, 14.4, 19.2, 28.8, 48, 38.4, 56,

64,128, 144, 192 and 256 Kbps

Interface: ITU/CCITT V.35 (M/34 female)

Transmit Mode: Single 62.5 or 50 µ core, multi-mode fiber

cable

Clocking: Internal, external or received recovered

Handshaking: Software (X-ON/X-OFF) or hardware

(RTS/CTS), both modes available at all

times

Application: Point-to-point

Typical Link Budget: 8 dB with a 50 µ cable; 12 dB with a

62.5 µ cable

Responsivity Minimum: 0.12 A/w

LED Indicators: TD, RD, RTS, CTS, power, test

Diagnostics: Local and remote loopback

Fiber Connector: ST or SMA

DTE Connector: M/34 female

Dimensions: 4.127"w x 1.52"h x 5.0"l

Power Supply: Wall-mount, 7.5VDC

SYMPTOM PROBLEM SOLUTION

Data passes, but

hardware flow

control doesn't

work

1180/35s work in

async. mode, but

not sync. mode

1. Incorrect DIP switch

setting

1. Incorrect DIP switch

setting

1. Switch 7 must be in

the ON condition for

hardware flow control

signals to pass

between 1180/35s;

both units must be set

the same way

1. Switch 8 (internal/

external clock) must

be set the same way

for both 1180/35s

APPENDIX C

INTERFACE PIN ASSIGNMENT

MODEL 1180/35 - FEMALE M/34 CONNECTOR (V.35)

Pin # Signal

A Frame Ground

B SGND (Signal Ground)

C RTS

D CTS

E DSR

F CD

H DTR

L LL (Local Loop)

M TM (Test Mode)

N RL (Remote Loop)

P TD

R RD

S TD/

T RD/

U XTC

V RC

W XTC/

X RC/

Y TC

AA TC/

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