On Mon, Feb 8, 2021 at 08:17 AM, Paul McClay wrote:
Is "L vs H" correct for the 5B10N switch mod? That seems odd when the function I assume, Left vertical amp vs _not_ Horizontal sweep.Yes off course it should be L vs R
Are "Description", "Bandwidth" & "Calibration" same-level headings? Or Description & Calibration with Bandwidth under Description? Or otherwise?I'm not sure understand the question correctly .... but here is what is said about Calibration:
5A19 MOD 709V CALIBRATION
Calibrate the same as standard with the following additions regarding offset.
Check OFFSET for ±15 volts in all Volts/Div positions.
1. Ground amplifier inputs and set display in center screen with
OFFSET in OFF position, and Volts/Div in .5 Volt/Div position.
2.Turn OFFSET to ON position and position trace 1 cm above center
screen. Plus .5 volts OFFSET.
3. Change Volts/Div to .2 position. Trace should now be 2-1/2 cm
above center screen. If trace shifts toward center screen instead,
offset strap on board is in wrong position. Strap should be in
5B10 MOD 709V CALIBRATION
Calibrate this instrument the same as standard except as follows:
1. Variable TIME/DIV is deleted - no checks required.
2. Fully ccw position of TIME/DIV switch used to be EXT INPUT .5 VOLTS
PER DIV. This feature is deleted and is now marked L vs R (left vertical versus
right vertical). In this position check to see that -30 volts is present at
contact A-12 of interface connector. Voltage should not appear at A-12 in any
other position of timing switch.