NCR 5953 manual Keylock, Key Click, Error Tone

5-8 Chapter 5: 5953 USB DynaKey Migration

Keylock

Both Wedge and USB DynaKeys include a 4 position keylock. In the Wedge DynaKey it is an every-unit-item (EUI), whereas in the USB DynaKey, the keylock can be optional if required, as a SCER. The Wedge DynaKey implements the keylock as a PS/2 wedge device. The USB DynaKey implements the keylock as a separate HID device. Because USB is designed for plug-and-play (PnP), the presence or absence of the keylock is easily detected by the host software.

In both DynaKeys, placing the key in the L (locked) position disables the keyboard. In the Wedge DynaKey, the MSR and the external scanner port are disabled. In the USB DynaKey, the MSR and the external USB ports are disabled.

Key Click

Both Wedge and USB DynaKeys provide a small speaker that can be used to make a key click sound. The exact sound made for key clicks is programmable in both devices, and the sounds available are comparable.

Error Tone

Both Wedge and USB DynaKeys incorporate the ability for host software to evoke an error tone using the key click speaker. The capabilities are comparable.

MSR

Both Wedge and USB DynaKeys provide an optional 3-track MSR in either ISO or JIS head configurations. The Wedge DynaKey cannot detect if the MSR is present, and even if it could, has no way to indicate that information to the host computer.