Characterisation, Measurement & Analysis
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PRBB Breakout Connector Board

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  • PRBB Breakout Connector Board

SRS PRBB Breakout Connector Interface Board for PRS10

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Availability: Awaiting stock
Please allow up to two weeks for delivery

Excl. VAT: £161.00 Incl. VAT: £193.20
Product Code: 14966
Manufacturer: Stanford Research Systems
PRBB Breakout Connector Interface Board for PRS10

This board is not part of the standard product and is available from the factory at and additional charge. It is intended to facilitate customer evaluation of the product by adapting the standard product’s interface connector to connector types which are more readily available in the laboratory (such as BNCs and DB9 for RS-232).

This board connects to the outside of the unit. Three BNCs are used to source 10MHz and the 1PPS outputs, and to receive the 1PPS input. A DB9(female) allows direct connection to a computer (usually via COM2:). A 2.1mm power connector allows the unit to be connected to a standard +24V/2.5A power supply (centre conductor must be positive).

The 10MHz output should be terminated into a 50Ω load. The output will be about 0.5Vrms (about 1.41Vpp).

The RS-232 interface uses CMOS logic levels (0V and +5V) which will work with standard RS-232 line drivers and receivers. The +12V of the standard RS-232 line driver will not harm the logic input, and the +5V RS-232 output from the rubidium standard will work with virtually all computers, provided the cable is less than 25 feet long. The RS-232 control lines, CD, DSR and CTS are all pulled high via 10kΩ resistors. An XON/XOFF protocol is used to pause communications as needed. The LOCK/1PPS function may be configured via RS-232. The factory default is a low level to indicate lock, with a 10ìs pulse to +5V at 1PPS, with the leading edge being defined as the 1PPS timing reference. This BNC output is a CMOS logic output via a 1kΩ resistor. LEDs are used to indicate +24V power (electronics and heaters), lock status, and RS-232 data received and RS-232 data transmitted.

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