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DLRO10 and DLRO10X
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3.3 Noise Lamp
Noise in excess of 100 mV 50/60 Hz will light the ‘Noise’ lamp and measurement
accuracy cannot be relied upon.
3.4 ‘C’ and ‘P’ Indicators
The ‘C’ lamp illuminates to indicate contact failure in the ‘C1-C2’ loop. The ‘P’ lamp
illuminates when there is a break in the P1-P2 loop.
3.5 ‘V’ and ‘I’ Warning Indicators
If external voltage is applied to the terminals the ‘V’ lamp will flash. This is a warning
that the item under test is live and might be dangerous. A test cannot be performed
in this condition.
The ‘V’ lamp will light 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 lamp will light at 100 V peak or 5 V peak respectively.
Please note - The ‘V’ lamp will only indicate if a voltage appears between
terminals. The lamp will not operate if all terminals are at the same high
voltage. The lamp will not operate if the instrument is turned off.
The ‘I’ lamp will light 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 until the ‘I’ lamp has gone out.
4. General Operation - DLRO10X
1
2
3
4
5
7
6
Item
Description
Item
Description
1
Back key
5
On/Off
2
Back light control
6
RS232 port
3
Test button
7
Cursor control
4
Key pad
4.1 DLRO10X Top Panel
All the controls needed to set up and operate DLRO10X are located on the top panel
of the instrument.
To the left of the large colour display are the controls for moving around the display,
controlling the menu and adjusting the display contrast and backlight.
To the right of the display is the large Test button, Power On/Off button and an
alphanumeric keypad for entering notes relating to a test which will be stored with
the test results for later reference.
To turn your DLRO10X on, press the On/Off button for approximately 1 second. Press
again to turn the instrument off. If the instrument is not used for 5 minutes it will be
turned off automatically.
