Trek 156A - Programming the STOP voltage

Programming Operation (cont.)
Programming the STOP voltage
1. After the START voltage has been programmed, press and hold down the
TEST/RESET switch. The letter “E”, representing “END” (STOP) voltage, appears
in the PLATE VOLTAGE display.
2. Release the TEST/RESET switch. The DECAY TIME display will indicate the
present STOP voltage.
3. Place the MODE switch in the positive (+) DECAY position to increase the STOP
voltage. The STOP voltage will automatically increase in 1 volt increments.
Place the MODE switch in the negative (-) DECAY position to decrease the STOP
voltage. The STOP voltage will automatically decrease in 1 volt increments. Select
the voltage parameter desired for testing. When the desired START voltage is
obtained, place the MODE switch in the FLOAT position
Note: The STOP voltage cannot be set above the programmed START voltage
or below 0 V.
4. Press and hold down the TEST/RESET switch. The letter “P”, representing
‘PROGRAM’, appears in the PLATE VOLTAGE display.
Release the TEST/RESET switch. The 156A stores the new settings for START and
STOP voltages and resets itself to begin testing for the newly chosen parameters.
The 156A will display the ‘revision level’ of the command program and then will
flash the new START voltage in the PLATE VOLTAGE display and the new STOP
voltage in the DECAY TIME display. The unit will then go into the normal
operating mode as set by the MODE switch.
III - 6
Operation