To get the typical -124dB @1kHz @0dBV you should set the output signal to -20dBFS, the output attenuator at 20dBV and the input at 10dBV.
Use a low sample rate (44.1 or 48 kHz) and use one channel only.
There is no way to shut off one analyzer channel completely. Just unplug the input cable and leave the inputs open. Or short the unused input to pin 1 of the XLR.
Use a low sample rate (44.1 or 48 kHz) and use one channel only.
There is no way to shut off one analyzer channel completely. Just unplug the input cable and leave the inputs open. Or short the unused input to pin 1 of the XLR.
OK, time to address a couple of the issues that have been raised over the last couple of months.
Instability with certain source impedances (inductive).
I have looked at the cause and possible solutions. After a lot of simulations and measurements I ended up with a solution that is simple to implement and doesn’t have any significant impact on the performance.
The solution involves adding a series combination of a 22 pF capacitor and a 1.5 kohm resistor from each input line to ground. So 4 of these are needed. They can be added internally on the PCB or they can be added in the XLR connector of the input cable.
Shields.
As mentioned here I have designed a shield for the input amplifiers of the RTX6001.
The shields are back from manufacturing and they are ready for shipping.
We have put together an upgrade kit, consisting of 5 x 22pF/200V NP0 capacitors, 5 x 1.5kohm resistors, 2 x wires and 2 x shields. Why 5 x capacitors and resistors when only 4 are needed? To have one spare in case something goes wrong
I expect that the upgrade kits will be sent to all customers this week. And they are free of charge.
RTX does not offer to mount the upgrade kits in this case.
Please see the attached documents for information on how to install the shields and mount the components.
Jens
Instability with certain source impedances (inductive).
I have looked at the cause and possible solutions. After a lot of simulations and measurements I ended up with a solution that is simple to implement and doesn’t have any significant impact on the performance.
The solution involves adding a series combination of a 22 pF capacitor and a 1.5 kohm resistor from each input line to ground. So 4 of these are needed. They can be added internally on the PCB or they can be added in the XLR connector of the input cable.
Shields.
As mentioned here I have designed a shield for the input amplifiers of the RTX6001.
The shields are back from manufacturing and they are ready for shipping.
We have put together an upgrade kit, consisting of 5 x 22pF/200V NP0 capacitors, 5 x 1.5kohm resistors, 2 x wires and 2 x shields. Why 5 x capacitors and resistors when only 4 are needed? To have one spare in case something goes wrong
I expect that the upgrade kits will be sent to all customers this week. And they are free of charge.
RTX does not offer to mount the upgrade kits in this case.
Please see the attached documents for information on how to install the shields and mount the components.
Jens
We have put together an upgrade kit, consisting of 5 x 22pF/200V NP0 capacitors, 5 x 1.5kohm resistors, 2 x wires and 2 x shields. Why 5 x capacitors and resistors when only 4 are needed? To have one spare in case something goes wrong
I expect that the upgrade kits will be sent to all customers this week. And they are free of charge.
Wow!
I have no experience with SMD soldering. Is there a good and simple tutorial for this kind of stuff?