Hardware 3-11
IEEE 488 Configuration
WARNING
WARNINGWARNING
WARNING
Never remove or install an interface card while ChartScan/1400 is connected to the AC
power line! Internal voltage potentials exist which could cause bodily injury or death!
WARNING
WARNINGWARNING
WARNING
Never disconnect the AC power line from ChartScan/1400 while its analog lines are
connected to an external device! Common mode voltage potentials exceeding 60 VDC or
30 Vrms may exist which could cause bodily injury or death!
CAUTION
CAUTIONCAUTION
CAUTION
Use approved ESD precautions, including static-free work area and grounded wrist strap,
when handling circuit boards and electronic components. Failure to do so could cause
equipment damage due to electrostatic discharge.
In order to use the IEEE 488 bus address, you must first turn off the ChartScan unit and install the optional IEEE 488
Interface Card. Also note that on ChartScan’s rear panel DIP switch, the COMM SELECT micro-switch (switch 1)
must be in the down (“0” position) to select the interface card option. The IEEE 488 Bus Address settings are then
made using the DIP switch on ChartScan’s rear panel.
Note: When using ChartView with IEEE 488 applications, you must make use of an
IOtech Driver 488/W31, /W95, W98, or /WNT when made available. In addition, the device
must be configured in the Driver 488 and be named WAVE.
The bus address can be set from 0 through 30 and is read only at po wer on or reset. The address is selected by
simple binary weighting. The switch labeled IEEE Address “1” (micro-switch number 8) is the least significant bit;
16 (micro-switch 4) is the most significant bit. The following figure shows an example IEEE 488 bus address setting
of 7.
Note: If address 31 is selected, the address defaults to 30 because the IEEE 488 standard has reserved the IEEE
Address 31.
Note: The DIP switch is only read when power is first applied to ChartScan, and for that reason must be set before
applying power to the unit.