Exemplo de uso
```rust use rust_usbtmc::instrument::Instrument;
const VID: u16 = 0x0699; // Vendor const PID: u16 = 0x0368; // Product
fn main() { let mut instr = Instrument::new(VID, PID);
// Command Osciloscope
instr.write("SELECT:CH1 1").unwrap();
println!("Ask: {}", instr.ask("*IDN?").unwrap());
} ```