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Hi All I'm Looking for a HP service manual for the 8562A but not the one that seems commonly available (08562-90062 for serial number prefix 2913A) my serial number is 2923A, I'm looking at the log

Hey everyone, Is there any information out there on the power supply used in these units? Mine appears to have died (I can't measure any output), and I can't find the schematic in the CLIP files. The

Hi, While trying to fix my HP8662A I'm trying to work out if?it is missing an output attenuator relay drive cable - or not. There appear to be at least two attenuator configurations in these

With the offset is set to -2.00 Vdc, the output of U502 reads -13.240. 1) anode of CR501 = -7.891 Vdc 2) emitter of Q501 = -1.0263 Vdc 3) cathode of CR502 = -9.446 Vdc 4) emitter of Q502 = 1.0324 Vdc

------ When offset is set to one of the settings that produce -13.2V at the output of U502, what voltages do you measure at 1) anode of CR501 2) emitter of Q501 3) cathode of CR502 4) emitte

So I did some more reading and I was wondering what comes after the DAC output control from A2. As mentioned before, I measured the output of the DAC and listed the voltages in my first post. They

Has anyone measured the additional phase noise from this clock multiplier module, or others? Thanks, Ron -

Not sure if this has been mentioned, and it is entirely academic, but the attenuation of the cable could degrade accuracy if the cables have significant enough loss. However with your cable (RG213),

Thanks to all who replied. I used to design fiber optic systems, among my other system design tasks, and am aware of the fact the receiver cannot sometimes track the source because of long delays in

According to the CLIP the A4 assembly is the Log Amp and Cal assembly. J3,J4,J5,J7 and J8 are 50 Ohm SMB connectors according to the parts list. I have not identified the EXACT designation of the RED

A few comments on SMB connectors : SMB is a push on RF connector that is a cousin of the SMC connector both are identical except of the SMC being screw on. SMB was designed as a miniature RF connector

What is the signal involved? HP often used SMB for DC bias or things like RF detector outputs when they just wanted a well screened cable. If that is the case here then a slightly squidged cable is

I did check the supplies. Sorry I forgot to mention that. If I remember correctly the +15 V supply was off, and it wasn't off by much. It was in the millivolts range if I recall. I was able to get

I'll also give the warming up trick a try as well and I'll check the continuity as well. Thanks. David.

George, I will confirm if there is a connector on the other end and the exact length this coming weekend. Thank you. David.

Hi David Having looked at the photograph I would first try slightly warming the cable and then using my thumb and a finger try to roll the damage out of the coax. SMB connectors are not normally used

Hi David This is an SMB connector.? The cable is almost certainly 50 Ohms impedance as is the SMB connector. The red is just for identification, does it have connectors on both ends? What is the

Thank you for your replies so far. Please find attached a photo of the connectors and the damaged coax cable (Red). If I was to buy cable it is important to buy the correct type so that it's the

Hi David I suspect that you are asking for a cable using SMB connector/s. Sugest that you photograph it and post the photograph. I have some SMB made up cables G Edmonds

There is no such thing as a push on SMA , the connector you are referring to is more than likely a SMB connector which are common in HP equipment to connect IF and low frequency signal lines, crimp