Black Box ServSwitch SW721AE-R2, Руководство пользователя

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“R2” SERVSWITCH
If most or all of the CPUs you’ll be connecting to your ServSwitch system use a
keyboard mode other than 2, you might want to change the defaults of their switch
ports at installation time. This is because when power outages occur, the switch
ports will return to their default keyboard mode when the power comes back on.
4.3.8 S
ET
K
EYBOARD
T
YPEMATIC
Most keyboards have an internal seven-bit “typematic” setting which governs the
way the keyboard responds when you hold a key down to force it to repeat. The five
“low” bits of this setting represent the rate at which the key repeats; the two “high”
bits represent the
delay after you begin holding down the key before it begins to
repeat. Sometimes a keyboard’s typematic setting isn’t suitable for a given operator
or for a given application. To change the shared keyboard’s typematic setting, issue
the Set Keyboard Typematic command: Press and release the left Control Key, type
[A] followed by the desired “typematic value,” and press [ENTER]. The “typematic
value” is the decimal equivalent of the binary seven-bit typematic setting: While the
typematic setting = delay bits + rate bits, the typematic value = decimal delay value +
decimal rate value (see Table 4-3 below and Table 4-4 on the next page). For
example, to set the shared keyboard to register a key 16 times per second after the
key has been held down for half a second (typematic value = 7 + 32 = 39), enter
[CTRL] [A] [3] [9] [ENTER].
Table 4-3. Typematic delay.
Decimal Value Binary Bit Values Delay Before Key Repeats
0 00[ xxxxx ] 1 ⁄
4
second (250 ms)
32 01[ xxxxx ] 1 ⁄
2
second (500 ms)
64 10[ xxxxx ] 3 ⁄
4
second (750 ms)
96 11[ xxxxx ] 1 second (1000 ms)