Sealevel’s SeaI/O modules are a good choice for this application. For example, using a SeaI/O-430 module with 32 isolated inputs, we can connect the dry…
How does the SeaMAC Configuration Utility help me develop a new application that uses the SeaMAC for Windows API?
The SeaMAC Configuration Utility lets you easily configure a Sealevel synchronous serial port to the communication options you select. By using the utility to change…
What is “Flyback Voltage” and what should I do about it?
A “Flyback Voltage Spike” occurs when the supply current to an inductive load such as a solenoid is interrupted. Any switching circuit for highly…
What type of relay should I use to control a 24 VDC solenoid?
The Form C relays contained in many Sealevel digital I/O products are the best choice for switching highly inductive loads like solenoids. Other relays, including…
What is Slew Rate Limiting and when should I use it?
Slew rate is a measurement of how fast the signal voltage changes over a specified period of time. At high data rates, you need a…
Can Sealevel relay racks be externally powered?
Yes, all Sealevel relay racks allow an external power source to be connected to the V+ and Ground terminals. However, you need to take steps…
Do I need to add pull-up or pull-down resistors to my Sealevel inputs?
No. Sealevel optically isolated and dry contact inputs are current-mode inputs, which do not require external pull-up (or pull-down) resistors to be added for…
Can I guarantee that my Sealevel Digital I/O TTL adapter outputs always power on at zero volts?
Yes, many of our TTL products can be modified to always power on with an off-state of zero volts (TTL “low”). All of our standard…
What is the ‘Gen Mod’ that Sealevel recommended?
‘Gen Mod’ is an abbreviation of ‘Generic Modification’ and it ensures that the COM port assignments on a USB serial adapter are always the…