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TDS
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REMOTE UNIT PXI

TDS PXI Remote Units

The TDS PXI Remote Unit is a PXI module that acts as the optical power supply for our TDS probes in the power-over-fiber forward link. In the radiofrequency (RF) over fiber reverse link, the TDS Remote Unit converts the optical probe signal to an electrical RF signal equivalent to the electric or magnetic fields sensed at the tip of the TDS probe.

SPEAG offers single-channel remote units (1RU1TDS PXI) for use with single-channel TDS probes. For future applications with multi-channel TDS probes, our remote units are available with an upgrade option (3RU1TDS PXI) that allows support of up to three probe channels.


1RU1TDS PXI

Remote unit for single-axis probes

Fiber Optic
Channel
Configuration

1 Sensor power-over-fiber channel (forward link)
1 Sensor RF-over-fiber channel (reverse link)
1 Probe ID power-over-fiber (forward link)
1 Probe ID communication channel (reverse link)

Photonic
Power
1 LASER power source (sensor power, 808 nm <50 mW)
1 LASER power source (probe ID power, 808 nm <4 mW)
Opto-Electrical
Converter

Single channel
RF bandwidth: 10 MHz – 6 GHz
RF dynamic range: >130 dB
RF P1dB (RF out): >10 dBm
RF S11 (RF out): <−10 dB

Optical wavelength: 850 nm

RF Connectivity 1 3.5 mm connector
Fiber-Optic Connector

SPEAG MU8 with integrated shutter, compatible with SPEAG TDS probes

Fiber-Optic Connector Mating Cycles
500 – 1000 (fiber-optic connector can be serviced by SPEAG, increasing total mating cycles to >25,000)
HW Trigger
Connections

1 Trigger in (front)
1 Trigger out (front)
1 Trigger in (PXI backplane)
1 Trigger out (PXI backplane)
1 24 V LASER interlock (front, optional)
Trigger connectors: SMB (front)

Power Supply PXI Backplane
Power
Consumption
<5 W
LASER Safety IEC60825-1 2007 Class 1
US FDA CDRH registration
Remote Control SCPI over PXI 
HW Trigger
 Accessories ClickCleaner (fiber-optic connector cleaner)
   
Multi-Channel Upgrade (Option)

3RU1TDS PXI

The multi-channel remote unit employs a fiber-optic switch in the reverse link to multiplex up to three fiber-optic reverse link channels to a single RF output by time division separation.

Fiber Optic
Channel
Configuration
3 Sensor power-over-fiber channels (forward link)
3 Sensor RF-over-fiber channels (reverse link)
1 Probe ID power-over-fiber (forward link)
1 Probe ID communication channel (reverse link)