[Amps] Vacuum Relay

[Bill Turner]

ORIGINAL MESSAGE: 
On Thu, 13 Dec 2012 14:15:57 -0500, W9AC wrote:

>The dual trace function isn't required to determine if hot-switching occurs, 
>but is required to measure system timing.  For station monitoring here, the 
>scope's Channel A is set to trigger on the keyer's output while Channel B 
>samples RF. 

REPLY: 
A dual trace scope is NOT required for this measurement. A single
trace scope which has an external trigger input (most do) will do the
job just fine. 

In the above scenario Paul is using channel A to do the triggering,
but triggering can also be done by the external trigger input. 

73, Bill W6WRT
ex-Tektronix Production Supervisor and Calibration Technician,
Portable Scopes Division 1977-1986