# 7 Timers and Filters

Overview

This chapter lists the Timers and Filters used in the EXS API for the CSP.

The CSP expects timers in API messages to be configured in 10-millisecond units, Most Significant Byte (MSB) first and Least Significant Byte (LSB) second.

To determine a timer of 10 seconds, you must convert the time to millisecond units (s = seconds, ms = milliseconds):

10 s = 10,000 ms = 1,000 10-ms units

1,000 = 3E8 in hexadecimal, which is expressed as 0x03, 0xE8.

You can determine timers using the conversion chart in the following section.

In this section:

Timer Conversion Table

T1 Filters

E1 Timers

Most Significant Bit
Least Significant Bit