Iso-Tech IDM 203 RMS Instruction Manual page 14

11. Delay hold button — This button also switches the hold function on, but with a 10 second delay in this case.
12. Manual range button — The manual range button is used to enable the manual range setting facility and to change ranges.
If the button is pressed once, the Auto annunciator on the display goes out. By pressing the button repeatedly, the meter
can then be set to the desired range. To revert to autoranging, hold the button pressed for two seconds.
13. Backlighting — The yellow button switches the backlighting on or off as desired.
14. Store button — In the store mode, "MEM" appears on the display and the last measurement made is stored. The value
stored is not deleted when the meter switches itself off automatically, but it is when the rotary switch is turned to "Off".
(This function is only available on the model 205 meter.)
15. Recall button — This button can be used to recall a stored measurement to the display. That this has been done is
indicated by appearing on the display and "MEM" flashing. The automatic power off is disenabled. To cancel the display
of the stored value and exit Recall, press the Hold button. (This function is only available on the model 205 meter.)
Fig.2 shows the controls and connections on the back of the unit.
16. Mains on/off switch — In the "I" position the mains supply is on and in the "0" position it is off.
17. Mains socket — Connector into which the power cable is plugged.
18. Mains fuse — This fuse provides protection against faults in the unit and overloads. (80mA/250V, quick-acting, 5 x 20mm.)
19. Mains voltage selector switch — This switch is used to switch the power supply unit in the meter to the appropriate mains
voltage.
Important : Before you use the meter, make sure that the mains voltage selector switch is set to the correct voltage supplied
from the mains supply.
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