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Chapter 7. Reference

c. To de-select auto run press [NONE].

7.2.19 HELP

The HELP key provides help on each key. The help message generally gives associated

functions and ways of changing the use of each key. To get help on any of the keys on the

keypad:

a. Press HELP, then press the required key for information. Some help screens show a

flashing [MORE] over the F4 key, press F4 for further information.

b. Press CLEAR/QUIT to exit the help system.

7.2.20  or  (Nudge Keys)

Change the current aim up or down by a small increment. This facility can be used to align a

pointer of an instrument to a precise indicated value and compare this indicated value with

the measured value. This facility may be used for pressure switch testing as follows:

a. Aim for a pressure just below the expected operating point.

b. When the pressure is achieved, repeatedly press  until the switch operates.

c. Record the pressure reading shown on the display.

d. Repeat this procedure using the  until the switch returns to its original condition,

refer to Section 4.8, “Airspeed Switch Test,” on page 36 for an example. Holding the

nudge function automatically repeats the function.

e. Record the pressure reading shown on the display.

Note: (1) Holding down one of the  keys automatically repeats the function.

Note: (2) The nudge value can be used for large increments e.g., 100 kts or 5,000 ft to

“step through” cardinal points on a test.

7.2.21 Number 0 to 9

Use these keys for numeric entry. All data entry is based on over-writing the existing value,

when the first numeric key is pressed, the existing number is replaced by the key pressed.

a. Press ENTER to complete numeric entry. Press CLEAR/QUIT if a mistake is made

during numeric entry. At any time, the existing number may be recovered by pressing

CLEAR/QUIT.

7.2.22 -000

This key performs two functions during numeric entry.

1. If it is the first numeric key pressed, it produces a minus sign for the entry of negative

numbers.

INFORMATION Make sure the nudge increment is set to a suitable value

before using the nudge facility to change the aim value. See Section 7.3.25,

“SETUP,  or  (Nudge Keys),” on page 90 to change the value of

increment for the nudge facility.

GE Druck ADTS 405 R Mk2 User Manual

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