4-12 TOS5051A/5050A
[16] SHIFT key
1. Press the POWER switch while holding down the SHIFT key.
The test conditions are initialized.
2. Press the CUTOFF CURRENT key while holding down the SHIFT key.
The upper or lower cutoff current is increased at a rate ten times the rate when
the key is pressed alone.
3. Press the CUTOFF CURRENT key while holding down the SHIFT key.
The upper or lower cutoff current is decreased at a rate ten times the rate when
the key is pressed alone.
4. Press the UP/LOW key while holding down the SHIFT key.
The lower pass/fail judgment function is turned ON or OFF.
5. Press the TIMER key while holding down the SHIFT key.
The test period is increased at a rate ten times the rate when the key is pressed
alone.
6. Press the TIMER key while holding down the SHIFT key.
The test period is decreased at a rate ten times the rate when the key is pressed
alone.
7. Press the ON/OFF key while holding down the SHIFT key.
The keylock function is turned ON or OFF.
[17] BUZZER control
The BUZZER control is used to adjust the loudness of the buzzer that annunciates
the results of pass/fail judgments. FAIL annunciations are louder than PASS annun-
ciations. By default, this control is set to the maximum loudness.
[18] Vacuum fluorescent display
The vacuum fluorescent display indicates test conditions, test results, and other
items. For details, see section 4.2, “Display Items” on Page 4-13.
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