HP 8569b mixer amplifier.
Hi guys, can the above spectrum analyzer be used where the amplifier shown as "needed" in mixer setup diagrams be dispensed with where using mixers for the machine. Also is Optiion E02 a built in on all machines, and if it is not does the IF in and out being present on the front of the maxhine indicate E02 is present. Thanx in advance. Anyone know where I can get a machine to reach 325 ghz without a preamp at a budget of $2500. let me know and stop laughing I know it will be a miracle. Thats why I would maybe settle for a machine like above, its limit is 115 ghz but its better than nothing. Doing tests to 325 ghz and above with newly invented module complete bandwidth output 35db gain 0-325+ghz.
John
Hi guys, can the above spectrum analyzer be used where the amplifier shown as "needed" in mixer setup diagrams be dispensed with where using mixers for the machine. Also is Optiion E02 a built in on all machines, and if it is not does the IF in and out being present on the front of the maxhine indicate E02 is present. Thanx in advance. Anyone know where I can get a machine to reach 325 ghz without a preamp at a budget of $2500. let me know and stop laughing I know it will be a miracle. Thats why I would maybe settle for a machine like above, its limit is 115 ghz but its better than nothing. Doing tests to 325 ghz and above with newly invented module complete bandwidth output 35db gain 0-325+ghz.
John
The 8569B spectrum analyzer came standard with IF Input and 1st LO Output ports to support the 11971K/A/Q/U/V-Series Harmonic Mixers. These mixers covered frequencies up to 71 GHz with the 8569B.
Opt E02 was designed to allow use of the older, 11517-Series external mixers, which only covered up to 40 GHz. I have very little information on Opt E02, but I believe it replaced the SMA IF Input connector on the front panel with a BNC connector that had both 1st LO and IF signals diplexed onto it. Option E02 is not in all 8569Bs.
The amplifier I believe you are referring to is the 11975A LO Amplifier. The 1st LO Output of the 8569B is only warranted to have an output >+8 dBm and is not level-controlled, but the 11971-Series mixers are specified for LO Input power levels between +14 dBm to +18 dBm. The 11971 frequency response specifications are improved if the LO can be maintained between +14.5 dBm and +16 dBm. The 11975A can provide a leveled LO signal over this tighter range.
I do not know if an 8569B that has Opt E02 can still also drive the 11971-Series mixers. I recommend you avoid Opt E02 if you want to cover up to 115 GHz. Look instead for an 8569B that has SMA connectors for both the 1st LO Output (on the left underneath the CRT) and the IF Input (to the right of the Type N input connector). If the 8569B has Opt E02, it should be listed in the options on the serial tag on the rear panel.
In regards to finding a spectrum analyzer for $2500 that will cover up to 325 GHz (with the appropriate external mixers), that is going to be very hard to find. However, you might find some older analyzers on the used market that are capable of this. Here are the model numbers of some old HP spectrum analyzers to consider:
HP 8560A – 100 Hz to 2.9 GHz (external mixing not supported if Opt 002, Tracking Generator, is installed)
HP 8561A – 9 kHz to 6.5 GHz
HP 8561B – 100 Hz to 6.5 GHz
HP 8562A – 9 kHz to 22/26.5 GHz
HP 8562B – 9 kHz to 22 GHz (un-preselected >2.9 GHz)
HP 8563A – 100 Hz to 22/26.5 GHz
Please understand that all of the above models have been discontinued and are out of support. The above models can be used with the 11970-Series of external mixers and mixers from other companies, such as Oleson Microwave Labs. The 11970-Series mixers cover up to 110 GHz.
Regards -
Relevant Products:#8569B,11971K,11975A,8560A,8561A,8561B,8562A,8562B,8563A#