tek 453 no sweep

[m3vuv]

ive been using this today to try to figure out the controls on my heath 4802 dso,ive been using the cal output from the 453 as a signal source,the 1v cal output seems ok at 998mv and a 51% duty cycle on my fluke 83v meter and on the heath dso,but the .5v cal signal reads 320mv on my fluke and on the heath dso,i know the fluke wont be super acurate as its a 1kc signal,but its plainly low,anyone know how to adjust the .5v cal output,ive hunted thru the manual but cant find it for love nor money!,cheers Paul m3vuv.

[bd139]

Thought it was 1V and 0.1V cal output on them?

[barry14]

The  calibration output on a Tektronix 453 is switch selectable to be either a 1.0 or 0.1 V P-P 1 kHz square wave with the base at 0 volts. Thus an true RMS voltmeter should read 0.5 V and 0.05 V, respectively. The 0.1 V output is derived from the 1.0 V output via a simple resistor divider. If the 1.0 V output is correct and the 0.1 V output is not, then check those resistors and the switch.

[m3vuv]

sorry all was having a blonde moment,should of gone to specsavers,your right,its .1v and all seems good,cheers m3vuv.