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National Instruments 781035-01 PXI RF Amplifier

The part number 781035-01 from National Instruments is the identifying part number for the PXI-5691 PXI RF Amplifier. This RF module has a frequency range of 50 MHz to 8.0 GHz. The module has 2 channels 1 fixed and 1 programmable. Channel Zero has a level calibration range of ±0.9 dB and can support a maximum absolute input power of +30 dBm, typical (7.1 Vrms, 10 Vpk at 50 Ω) without damaging the module. The maximum absolute output power the module can produce with damage is +20 dBm. The module has an input voltage range of ±10 Volts with a maximum output power of +25 dBm. 

Channel One which is the main path has a Gain range of +31.5 dB and a Gain step size of +0.5 dB. The level setting time of this RF module is +4 µs maximum on channel One with a level calibration accuracy of ±0.9 dB.  The channel relay switching time of the 781035-01 is pretty fast with a switching time of 5 ms. The Gain upper bound at 10 Mhz is 0.40 dB while the lower bound is -0.60 dB. At 8 GHz the upper bound is -0.60 dB while the lower bound is set to -3.40 dB. 

This 781035-01 requires 2.9 watts of power at 12 volts with a current draw of 99 mA. The front panel has 4 SMA female connectors for CH0 input, CH0 output, CH1 input, and CH1 output with an impedance of 50 Ω and AC coupling. The module has dimensions of 21.6 cm × 2.0 cm × 13.0 cm (8.5 in. × 0.8 in. × 5.1 in.) and weighs 263 g (9.2 oz). 

The maximum altitude this RF module can be mounted is 2,000 meters (800 bar) (at 25 °C ambient temperature). It should be operated in an environment with a temperature between 0 °C to 55 °C and a relative humidity range of 10% to 90%, noncondensing. It has an operation shock rating of 30 g peak, half-sine, and 11 ms pulse. The 781035-01 is designed according to IEC 61010-1, EN 61010-1 safety standards.