From bb2b3ed893e7700736780aacf262405269467459 Mon Sep 17 00:00:00 2001 From: Peter Date: Sun, 6 Aug 2023 22:28:21 +0800 Subject: [PATCH] build issues --- ...0A-spectrum-analyzer-as-a-frequency-generator.md | 6 +++--- .../IMG20230801205713.jpg | Bin .../IMG20230801222053.jpg | Bin .../IMG20230801223458.jpg | Bin 4 files changed, 3 insertions(+), 3 deletions(-) rename assets/img/{2023-08-06-HP-8560A-spectrum-analyzer-as-a-frequency-generator => 2023-08-06-HP-8560A-spectrum}/IMG20230801205713.jpg (100%) rename assets/img/{2023-08-06-HP-8560A-spectrum-analyzer-as-a-frequency-generator => 2023-08-06-HP-8560A-spectrum}/IMG20230801222053.jpg (100%) rename assets/img/{2023-08-06-HP-8560A-spectrum-analyzer-as-a-frequency-generator => 2023-08-06-HP-8560A-spectrum}/IMG20230801223458.jpg (100%) diff --git a/_posts/2023-08-06-HP-8560A-spectrum-analyzer-as-a-frequency-generator.md b/_posts/2023-08-06-HP-8560A-spectrum-analyzer-as-a-frequency-generator.md index 2c14486..f8b0d90 100644 --- a/_posts/2023-08-06-HP-8560A-spectrum-analyzer-as-a-frequency-generator.md +++ b/_posts/2023-08-06-HP-8560A-spectrum-analyzer-as-a-frequency-generator.md @@ -10,7 +10,7 @@ I just bought a Hitachi VC-6025 oscilloscope from my Singapore trip for 85 SGD. I was inspired by [this blog post](http://www.toughdev.com/content/2021/05/vintage-oscilloscopes-to-the-test-hitachi-vc-6025-gw-instek-gos-6103-and-kenwood-cs-5275/) and decided to test the frequency response of the oscilloscope. I didn't have any sort of frequency generator though, so I used a HP 8560A spectrum analyzer to generate the frequency. -![25 MHz signal from spectrum analyzer](/assets/img/2023-08-06-HP-8560A-spectrum-analyzer-as-a-frequency-generator/IMG20230801223458.jpg) +![25 MHz signal from spectrum analyzer](/assets/img/2023-08-06-HP-8560A-spectrum/IMG20230801223458.jpg) Not shown in the picture, there is a N type to SMA, SMA to BNC cable which connects to the scope (yes, this is very suboptimal but I don't have many cables laying around - I still need to buy probes). The cable is connected to the tracking generator output of the SA. @@ -18,9 +18,9 @@ As you can see on the screen, I'm operating the SA in zero-span mode. This also By changing the center frequency I can select the output frequency of the TG. As shown in the image, the oscilloscope is triggering on the 25 MHz signal nicely. -![200 MHz](/assets/img/2023-08-06-HP-8560A-spectrum-analyzer-as-a-frequency-generator/IMG20230801222053.jpg) +![200 MHz](/assets/img/2023-08-06-HP-8560A-spectrum/IMG20230801222053.jpg) At 200 MHz, the signal is heavily attenuated (as expected - the bandwidth of the Hitachi VC-6025 is 50 MHz in analog mode) and it is heavily unfocused, however it still triggers. Above 200 MHz it is so unfocused, it becomes unrecognizable. Bonus image: why CRTs are just great to look at -![CRTs](/assets/img/2023-08-06-HP-8560A-spectrum-analyzer-as-a-frequency-generator/IMG20230801205713.jpg) +![CRTs](/assets/img/2023-08-06-HP-8560A-spectrum/IMG20230801205713.jpg) diff --git a/assets/img/2023-08-06-HP-8560A-spectrum-analyzer-as-a-frequency-generator/IMG20230801205713.jpg b/assets/img/2023-08-06-HP-8560A-spectrum/IMG20230801205713.jpg similarity index 100% rename from assets/img/2023-08-06-HP-8560A-spectrum-analyzer-as-a-frequency-generator/IMG20230801205713.jpg rename to assets/img/2023-08-06-HP-8560A-spectrum/IMG20230801205713.jpg diff --git a/assets/img/2023-08-06-HP-8560A-spectrum-analyzer-as-a-frequency-generator/IMG20230801222053.jpg b/assets/img/2023-08-06-HP-8560A-spectrum/IMG20230801222053.jpg similarity index 100% rename from assets/img/2023-08-06-HP-8560A-spectrum-analyzer-as-a-frequency-generator/IMG20230801222053.jpg rename to assets/img/2023-08-06-HP-8560A-spectrum/IMG20230801222053.jpg diff --git a/assets/img/2023-08-06-HP-8560A-spectrum-analyzer-as-a-frequency-generator/IMG20230801223458.jpg b/assets/img/2023-08-06-HP-8560A-spectrum/IMG20230801223458.jpg similarity index 100% rename from assets/img/2023-08-06-HP-8560A-spectrum-analyzer-as-a-frequency-generator/IMG20230801223458.jpg rename to assets/img/2023-08-06-HP-8560A-spectrum/IMG20230801223458.jpg