4.7
Changing Power Supply Setting from
115V to 230V or 230V to 115V
Power Supply
Voltage Selector
(Black Body, Red Switch)
115 V Setting Position
230 V Setting Position
The instrument's power supply setting can be changed from 115 to 230V
by following the procedure below:
1. Turn the power OFF and unplug instrument from all inputs and
power.
2. Unscrew all four bottom screws.
3. Remove instrument from case.
4. Locate switch next to transformer (see drawing).
5. Set red switch 115V or 230V as appropriate.
Switch setting indicates the selected supply voltage.
6. Replace the fuse (see power inlet) with appropriate current rating.
115V = 1 A, 230V = 0.5A
7. Carefully reinstall instrument into the case and fasten bottom screws.
8. Remove old voltage label. Affix input voltage label (115V or 230V)
under the AC power inlet.
18
Digital Transformer Ratiometer DTR
Power Input
Fuse
Input Voltage Label
(to match power supply
voltage switch setting)
On/Off Switch
Battery Pack
Model 8500
®