Old thread but that not withstanding here is some info that might be useful on how to hook up an external scope to the R2001D to use as a screen substitute. I found this information on the Batlbs forum some time ago, but have not personally verified it. I only made a small correction bellow.
http://batboard.batlabs.com/viewtopic.php?f=1&p=203332&t=42545Here is how I have connected an ocilloscope to the R2001.
The 'scope is used as a replacement for the CRT.
The scope must have X,Y,and Z inputs.
X=Vertical
Y= EXT Horizontal input.
Z= Blanking input, which is often found on the back panel of the scope.
The video will be inverted (negative) unless you construct a simple video inverter.
Connections to the R2001:
All connections are to test points on the A-2 board which is next to the CRT. The test points are in order as noted.
Also note that the LV supply will not operate with out the HV supply connected..
R2001A,B,C.
Vert: TP4
Horz TP1
Z (video) TP8
TP1 is toward rear of the chassis.
R2001D:
Vert: TP1
Horz: TP6
Z (video) TP 1 --> my correction: should say TP7
TP1 is toward the front of the chassis.
Set the scope for ext horz, set vert, and horz gains for the desired scan.
Adjust scope intencity, and 2001 intencity for adequate display.
The only R2001 front panel control which will be inop is the Focus.