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Introduction
1−18 CM 4000 Installation and Operating Manual
— Each CP 2002B/D Control Panel counts as four devices; therefore, a maximum of 16 can be connected to a
CM 4000 (two per serial port).
Fixed Load Factors
The following load factors are fixed and are not subject to the multiplier described below under “Calculating Loading”:
— If a CM 4000’s Crosspoint Bus is in use, it counts as twenty devices on that CM 4000.
— Each instance of a “remote” (non−Crosspoint Bus) switcher protocol counts as eight devices (maximum
one protocol per port).
— Each instance of the ASCII protocol counts as eight devices (maximum one protocol per port).
— Each instance of ESswitch counts as follows:
S If the switch rate is less than fifty switches per second sustained past five seconds, that instance counts
as eight devices (maximum one protocol per port). A switch is defined as a take from one input to one
output on one level.
S If the switch rate is more than fifty switches per second sustained past five seconds, that instance
counts as 32 devices (maximum one protocol per port). A switch is defined as a take from one input to
one output on one level.
— Each instance of serial machine control (Sony machine) counts as eight devices (maximum one protocol per
port).
Note 1: When high switch rates occur, automatic router status on ASCII and ESswitch ports will not be able to
keep up due to baud rate limitations. Therefore it is suggested that the ASCII protocol use the ZR status commands
instead of ZW, and the ESswitch protocol use READ STOD instead of UDAT STOD.
Note 2: When high sustained switch rates occur and status of identical outputs or levels are being displayed on
router control panels that can display multiple outputs or levels, or on GUI panels, status being displayed may be
delayed.
Calculating Loading
— A maximum of sixteen devices may be assigned to an addressable controller port.
— Only one Sony−protocol device can be connected per port. Only one ASCII protocol device or ESswitch de-
vice can be connected per port.
— In order to calculate loading and quantity of processors required, the following steps should be followed:
1. Sum all base and fixed loading factors in the system.
2. If the system wide sum of all base and fixed loading factors is less than 160, this system is considered a “light-
ly” loaded system and a base multiplier of 1.0 should be used in later calculations.