If you really want to measure the attenuation accuracy of the device, normalize the the scope response to 0 dB to compensate for the insertion loss of the cables and the device.
I recently purchased a set of in line SMA attenuators for about $40. Wish i would have seen this first for $6 i would have tried it. Oh well on the plus side my attenuators are flat across the useable range of my SA and pretty dead on. I think yours was 1.5dB off at the worst. I known thats not much just trying to make myself feel better. Thx for sharing
Thank you for the measured curve of the attenuator. Half-dB Steps with 6 bit up to 31,5 is what they have, maybe is is just left out for easier operation with the incremental switches .
I haven't seen these little boards before. Thanks for the preview. As for the bent connector, I've had stuff from overseas get bent like that due to poor packaging. File a damage claim and get a replacement.
Hi there, many thanks for nice review. I'm looking for programmable attenuator but for range covering the both WiFi bands: 2.4GHz and 5GHz. Do you know any / can you recommend any?
hi ..i am a novice..i bought the vna and the tinySA.. i recently purchased a similar digital attenuator a DC-6G which i asdume is similar to the one you are testing..anyways i was told to purchase this to attenuate my Feeltech FY6800 signal generators output for generating a S9 signal to ssb a cb radios input...i csnt find any specs on what INPUT tolerance is on these digital attenuators? Please help me. cheers...ps could you test these with the TinySA? Andrew s
I used that chinese attenuator, trying to reduce 10mw of an RF Pre-Amp output, for a 15 watt 87MHZ-108MHZ FM Transmitter Project , , i set it at -3db hoping to half the output, but it did not work, i got the full 10mw producing 20 watt , , , even at -10db, i still have the full 10mw, at -15 db i get 20 watt for 3 seconds then nothing, the needle drops to zero, , , when i get 20watt, i turn ithe power off after a few seconds to stop frying the MOS FET RD15HVF1 RF power Transistor, , , bloody useless chinese attenuator, , , i'm opting for a simple analogue Variable Attenuator 0-20dB that is used for 471-847mhz UHF TV frequencys, , , the specs say the Frequency Range is 5 - 1000Mhz, , , so i'm hoping it will work !!