I have a 7A26 (in a 7704A) whose channel 1 will calibrate nicely using the front adjustment versus 25 MHz signal set at 0 dBm; 640 mV P-P. Channel 2 shows about 800 mV P-P but the adjustment is at minimum. Same for the internal gain adjustment for channel 2 which is at minimum.
Thanks in advance.
--
William, k6whp
"A friend told me to cheer up, things could be worse.
So I cheered up and, sure enough, things got worse!"