The Cypress OTT-2100-2 Cable Test Tool tests existing access control cable for use with new OSDP readers. This tool is a pair of devices that simulates OSDP communication over the cable and determines the packet loss. The test simulates OSDP communication at each baud rate. Three status LEDs display results of the test per baud rate, selected with DIP switches. There are two test modes, 600-Test (short) and 6000-Test (long), for quick tests or more in-depth tests.