Black Box ACU5010A manual How the Extender Uses the Keyboard LEDs, Password-lockout LED pattern

SERVSWITCH™ WIZARD EXTENDER

5.3 How the Extender Uses the Keyboard LEDs

The ServSwitch Wizard Extender also uses the LEDs on the attached keyboards to indicate various conditions. It will light the Num Lock, Caps Lock, and Scroll Lock LEDs in several different ways:

•Configuration-mode indication—rolling sequence. As shown in Figure 5-1, the receiver flashes the Num Lock, Caps Lock, and Scroll Lock LEDs on the attached keyboard in sequence to show that it’s in configuration mode (see Section 4.2.2). Num Lock will light first while Caps Lock and Scroll Lock are dark. Then Caps Lock only will be lit, then Scroll Lock only, and then Num Lock again. The cycle repeats itself continuously until you exit configuration mode, after which the LEDs will be placed back in the states they were in before you went into configuration mode.

The speed of the cycle indicates how much video compensation the Extender is applying (which is one of the things you can set in configuration mode, if you choose to do so): A slow flash rate indicates low compensation suitable for shorter cable distances, while a fast flash rate indicates high compensation suitable for longer distances. For examples of actual rates and distances, see step 1 in Section 4.2.2.A.

Figure 5-1. The configuration-mode LED pattern.

•Password-lockout indication—lightbar flashing. As shown in Figure 5-2, while the Extender is locked and waiting for the user to enter a password (see Sections 4.4 and 5.1), it alternately lights the Num Lock/Scroll Lock LED pair and the Caps Lock LED on the primary keyboard. This pattern of flashing alternate LEDs is similar to that of the lights in the lightbar of a police car. Once you type in the correct password and press [Enter], these LEDs will stop flashing and return to their previous states.

Figure 5-2. The password-lockout LED pattern.

38