External Voltage Warning; Discharge Current Warning; The Menuing System; Test Menu - PEWA Megger DLRO-10 Guia Del Usuario

GENERAL OPERATION - DLRO 10X
the current circuit is not made or "CP OPEN CIRCUIT" if both circuits are
inadequate. Check the contacts, since a measurement cannot be made if
any of these messages is visible on the display.

External Voltage Warning

If external voltage is applied to the terminals a message "EXT VOLTS" will
flash on the display. This is a warning that the item under test is live and
might be dangerous. A test cannot be performed in this condition.
The "EXT VOLTS" message will flash if more than 50 V. is applied
between either voltage terminal and a current terminal. If the voltage
appears between just the voltage terminals or just the current terminals
the message will appear at 100 V peak or 5 V peak respectively.
Please note - The message will only appear if a voltage appears BETWEEN
terminals. The message will not appear if all terminals are at the same
high voltage. The message will not operate if the instrument is turned off.

Discharge Current Warning

A message CURRENT FLOW will appear if a current greater than 1 mA is
still flowing after a test is completed. This suggests that an inductive load
has been tested and is still discharging. Do not disconnect the current
loop while the discharge warning is showing.

The Menuing System

Use the Left and Right arrows of the cursor control to highlight the menu
required. Press the Down cursor control to see the options available on
that menu. Select the required option using the cursor control and press
Enter to set that option. Depending on the menu item selected the display
will either present further options or will return to the main menu screen.

Test Menu

This sub-menu selects the test mode. Only one mode can be active at a
time and the active mode is displayed below the heading TEST. (See Test
Modes later in this manual for details of each mode.)

Options Menu

The Options menu has five options that are not related to each other, as
shown below.

Retrieve

allows the recall of stored results to the display or a PC.

Display

recalls each test, in sequence, to the instrument display
starting with the latest stored result.
controls to step later or earlier respectively through the stored results.
Alternatively, if you know the index number of the test you wish to
display, type the number on the keypad and press Enter.
An asterisk (*) next to the word "MEMO" means that there are notes
attached to this result. Press the right cursor control to view the notes.
Download
Use the cursor
control Up
and Down
7