TTI LTX-5510 Скачать руководство пользователя страница 7

Operating Considerations

The LTX-551X system may be used to transmit signals from a source that is distant or at a different 

ground potential with respect to measuring devices such as an oscilloscope. The input signal must 

be in the range of  0 - ± 1 V or 0 - ± 5 V depending on the range selected. Digital signals may be 

transmitted as well. TTL, CMOS or LVTTL level signals are acceptable. The output signals are LVTTL 

( 0-3.3 V).

For high speed signals transmitted via any significant amount (electrical length comparable to rise/fall 

times) of coaxial cable, a 50 ohm termination may be switched in to preclude distortion and reflections 

from a mismatched transmission line. 

The power supply for the unit must be at roughly the same potential of the signal common mode 

voltage. For example, using the unit at a 10 000 V potential while it is utilizing the wall mount power 

supply at conventional line potential will result in a 

 hazardous situation and certain damage to the 

equipment

An isolation transformer with sufficient isolation voltage rating must be used to power the 

wall mount supply.

The length of fiber optic cable that may be used with the LTX5510 is typically 300 M for 62.5/125um 

fiber or 500 M for 50/125um fiber and for the LTX5515 the typical distance is 150M for 62.1/125um 

fiber and 300 M for 50/125um fiber. Fiber bandwidth and not loss is typically the limiting factor for 

range with multimode units. The single mode version is limited by loss. Typical ranges of 10 km may 

be achieved with this model using single mode fiber. 

When setting up the LTX-551X system, 

note that the transmitter must be turned on last!

 

This 

allows the receiver to detect the synchronizing framing characters. Meaningless signals will otherwise 

be generated. Should sync be lost by disconnecting the optical fiber, simply turn the transmitter off 

and on.

The red LED labeled O.L. indicates that the input signal exceeds the maximum input voltage for the 

range in use. 

The green LED on the receiver indicates that the receiver is operating with an adequate optical input 

signal. If the indicator goes out, the transmitter has lost power or the connecting fiber is disconnected 

or broken.

The controls and their functions are indicated on the following pages. 

The output signal from the receiver has a 10 V peak to peak output into an open circuit. The 

maximum output into a fifty ohm load is 4 V peak to peak. 

      DIGITAL INPUT/OUTPUT 

CONNECTIONS

Digital Ground

Chan. 5 

Chan. 2

Chan. 3

Chan. 4

5

3

4

2

1

4

Содержание LTX-5510

Страница 1: ...Operating Instructions Terahertz Technologies Inc 169 Clear Road Oriskany NY 13424 315 736 3642 FAX 315 736 4078 E mail sales terahertztechnologies com 6 2011 LTX 5510 and LTX5515 Fiber Optic Link...

Страница 2: ...controls as follows POWER Off 4 Connect the power supply plugs to the connector on the back of each unit 5 Plug the power supplies into a wall socket 6 Connect a signal source to the transmitter Inpu...

Страница 3: ...Contents Introduction 1 Unpacking and Inspection 1 Power Considerations 1 Description Features 2 Theory of Operation 3 Operating Considerations 4 Specifications 5 Service Warranty Information 6...

Страница 4: ...signals may range from 5 to 5 volts The output signal will have a one to one correspondance i e a gain of 1 When the front panel selector switch is set to 1V F S the gain is 5 ie a 1 volt input signal...

Страница 5: ...rload Indicator Input Impedance Selector Input Range Select Digital Input Connector Analog Input Connector 2 Power Switch Optical Signal Indicator good when lit Digital Input Connector Analog Output 5...

Страница 6: ...the LTX 551XR receiver The LTX 551XR receives the optical bitstream and converts it to a digital signal It then decodes and de multiplexes this data Twelve bits are presented to a fast D A converter...

Страница 7: ...the LTX5510 is typically 300 M for 62 5 125um fiber or 500 M for 50 125um fiber and for the LTX5515 the typical distance is 150M for 62 1 125um fiber and 300 M for 50 125um fiber Fiber bandwidth and n...

Страница 8: ...850 nm 20 nm LTX 55XX 1310 1310 nm 20 nm Optical Transmission Rate 1 0 Gb S 2 0 Gb S Loss Budget 15 dB max Optical Return Loss 15 dB Laser Safety Classification Class I safety per FDA CDRH and IEC 82...

Страница 9: ...TTI I E THERE IS NO WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE TTI HEREBY DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY OTHER THAN THE WARRANTY IN THE FIRST SENTENCE TO THE FULLEST EXTENT PERMITTED BY...

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