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HD2102 - 8 - V2.3

KEYBOARD AND MENU DESCRIPTION

Foreword

The instrument keyboard is composed of single-function keys, like the SERIAL key in the

HD2102.1 model, and double-function keys such as the ON-OFF/Auto-OFF key.

In the double-keys, the function in the upper part is the “main function”, while the one in the bottom

part is the “secondary function”. When the instrument is in standard measurement mode, the main

function is active. In the menu or in conjunction with the FUNC key, the secondary function is

enabled.

The pressing of a key is accompanied by a short confirmation beep: a longer beep sounds if the

wrong key is pressed.

Each key specific function is described in detail below.

ON-OFF/Auto-OFF key

The instrument is turned on and off using the ON/OFF key. The turning on enables all display

segments for a few seconds, starts an auto-test including the detection of the probe connected to the

input, and sets the instrument ready for normal measurement.

MIN

min

>>>

If during turning on no probes are connected, the message PROB ERR is displayed.

When the probe is inserted into a functioning instrument, it is not detected. As the probe's

data are captured upon turning the instrument on, it is necessary to turn the instrument off

and on again.

Replace the probes when the instrument is off.

If a combined probe LP 471 P-A or LP 471 A-UVeff is connected to the instrument, at switching on,

the instrument displays alternatively the measures of the two sensors. Pressing any key (excluded

ON/OFF key), automatic commutation is turned off. To reactivate it, press HOLD and REL keys

together.

Automatic turning off

The instrument has an AutoPowerOff function that automatically turns the instrument off after about

8 minutes if no key is pressed during the intervening time. The AutoPowerOff function can be

disabled by holding the HOLD key pressed down during the entire turning on phase: the battery

symbol will blink to remind the user that the instrument can only be turned off by pressing the

<ON/OFF> key.

Delta OHM HD2102.1 User Manual

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