4-6. TRANSITION RELAY PANEL
This task covers:
Tool kit SC4940-97-CL-E12
Drycleaning solvent (Item 34, Appendix B)
10 to 6000 Hz signal generator
Variable dc voltage supply
75 ohm, 100W load resistor
150 ohm, 5 W resistor
10 to 6000 Hz frequency counter
Transition relay panel removed
1. Test the transition relay panel as follows:
a. Connect jumpers between TB1-M and TB1-P and TB1-N and TB1-R.
b. Connect 75-ohm resistor between TB1-A and TB1-H.
c. Connect 150-ohm resistor between TB1-L and TB1-K.
d. Connect positive lead of variable dc voltage supply to TB1-A. Connect negative lead to TB1-K. Set output of
voltage supply to 37.5 V dc.
e. Connect signal generator leads to TB1-P and TB1-R. Use an oscilloscope and a frequency counter and set the
signal generator frequency to 10 Hz and amplitude to 20 V P-P.
f. Connect multimeter between TB1-H and TB1-K.