Model 651-026-063 offers 63 dB dynamic range in 1 dB steps over a frequency range of DC to1000 MHz. Attenuation accuracy is ±0.4 dB or 2% of programmed, maximum VSWR is 1.30:1 and maximum insertion loss is 2.5 dB. The switching speed is 10 milliseconds and TTL control is via a 10-pin connector with a latch. Other impedance and connector options are also available. Please contact us with your unique requirement for the appropriate model number.