Three Stage Installation
The procedures for setting up a three stage installation are essentially the same as for a two stage installation. With a three stage setup, as many as 512 computers can be controlled in a complete installation. A table showing the relation between the number of computers and the number of KH88 units needed to control them is provided on p. 43.
Note: 1. See Notes 1 and 2 at the beginning of the Two Stage Installation section.
2.KH88 units cannot be cascaded beyond the third level. To set up a three stage installation, do the following:
1.Make sure that power to all the devices you will be connecting up, including all preexisting devices on the installation, have been turned off.
2.Use a KVM cable set (described in the Cables section, p. 4), to connect any available CPU Port on the Second Stage unit to the Console Port connectors of the Third Stage unit.
3.Use KVM cable sets (described in the Cables section, p. 4), to connect any available CPU port on the Third Stage unit to the Keyboard, Video, and Mouse ports of the computers you are installing, as shown in the diagram on page 12.
4.Plug the power cord that came with this package into the KH88’s Power Socket, and then into an AC power source.
5.Repeat these steps for any other Third Stage units you wish to connect.
6.Power on the Third Stage unit(s); next, power on the Second Stage units; finally, power on the First Stage unit.
7.Turn on the power to all the computers.
Note: The Power On sequence requires that all Third Stage units be powered on first. After they are all on, the Second Stage units must be powered on next. After all the Second Stage units are on, the First Stage unit must be powered on. Only after all the KH88s have been powered on following this sequence, can the computers be powered on.
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