1. DESCRIPTION
Starting with MicroPulse firmware version 2.9.0, users can configure clean-out pulses to be transmitted directly from the MicroPulse tool—eliminating the need to rely on or configure a separate pulser driver for this function.
When enabled, MicroPulse will automatically transmit four clean-out pulses using the next shorter pulse width than the configured active mode pulse width. This serves two purposes:
- • Clean-out Functionality: Helps remove any potential obstruction in the pulser or lower-end assembly.
- • Performance Preview: Demonstrates the signal shape and quality achievable with faster pulse widths.
Example:
If the active mode pulse width is set to 0.600 seconds, the clean-out pulses will be transmitted at 0.500 seconds. This gives users a preview of system performance at faster telemetry speeds.
The clean-out pulses are sent ahead of the configured transmit delay, followed by a Post Clean-Out Pulse Quiet Period (default: 10 seconds) to ensure that the Sync Pulse Train and standard telemetry are transmitted at the correct time without interference.
Figure 1: Clean-out Pulse Example
2. CONFIGURATION
There is only configuration setting associated with the clean out pulses feature:
- • Clean Out Pulses Enable / Disable: This setting allows the user to enable / disable clean-out pulses feature.
3. Purpose Of Clean Out Pulses
The purpose of enabling clean-out pulses is to help clear potential obstructions in the pulser, lower end, or muleshoe sleeve. Generating four preliminary pulses before the sync pulses allows for effective cleaning of the lower end, ensuring optimal transmission of the sync pulses.
4. NOTES
The time-period calculation to perform cleanout pulses is evaluated in the following cases:
- • Boot
- • Mode Changes
- • Pulse Width Changes
- • Clean-out Pulses Enable / Disable
- • Transmit Delay Time
Currently, the supported pulse widths used for Clean-out pulses are: {100, 150, 250, 375, 500, 600, 800, 1000, 1200, 1500, 2000} milliseconds.
Also, if the active mode’s pulse width is set to the smallest value allowed then the firmware would choose the same pulse width for the clean-out pulses.
Authors:
Abe Erdos Saravanan Pandiyan
Electrical Engineer Firmware Developer
REQUEST PDF
