[time-nuts] Spectracom 8140 distribution amplifier and the Taps- some application info

2011-07-27 Thread walter shawlee 2
There have been many questions posted here about the units, here are a few answers I have collected: 1. the 8140 can drive up to 25 total downstream 8410T taps on the combined outputs. The mopdels are frequency specific, and are not easily changed, 10Mhz is the most common. The front selector

Re: [time-nuts] Spectracom 8140 distribution amplifier and the Taps- some application info

2011-07-27 Thread Bruce Griffiths
walter shawlee 2 wrote: There have been many questions posted here about the units, here are a few answers I have collected: 1. the 8140 can drive up to 25 total downstream 8410T taps on the combined outputs. The mopdels are frequency specific, and are not easily changed, 10Mhz is the most

Re: [time-nuts] Spectracom 8140 distribution amplifier and the Taps- some application info

2011-07-27 Thread Bob Camp
distribution amplifier and the Taps- some application info There have been many questions posted here about the units, here are a few answers I have collected: 1. the 8140 can drive up to 25 total downstream 8410T taps on the combined outputs. The mopdels are frequency specific, and are not easily changed

Re: [time-nuts] Spectracom 8140 distribution amplifier and the Taps- some application info

2011-07-27 Thread John Ackermann N8UR
I'm not sure if there's been other data posted, but a few years ago I did phase noise measurements of the 8140T as well as HP 5087A and TADD-1. That info is at http://www.febo.com/pages/amplifier_phase_noise/ I got my hands on a tub full of 8140Ts but don't have the 8140 driver. However,

Re: [time-nuts] Spectracom 8140 distribution amplifier and the Taps- some application info

2011-07-27 Thread Bob Camp
Hi Based on your data the floor of the taps are a bit lower than I thought. I have only looked at a full system end to end. I was looking at AVAR so the numbers would not compare directly. Very few people have lab standards that run -120 dbc/Hz at a 1 Hz offset. Even fewer instruments have a