APPNOTE: Recommended baud rates for different Loggers

Article ID: 030711sab
Last Reviewed: April 04, 2008

The information in this article applies to:

  • Pronto for Windows all releases.

Target Audience.

This Article is aimed at:

  • All Pronto Users.

Summary.

The recommended rate should give the most reliable communication betweena Logger and a computer. In some cases a slower rate will give morereliable results, particularly in electrically noisy environments.

Which type of Logger do you have ?

  • Standard first generation Ranger Logger (without enhanced serial communications firmware).
    Ranger II with firmware 4.56 or earlier.
    Meter Socket Logger (1530 series)
    Scout (10xx series)
    Qualitrol
    Power Logger (1230 series) with firmware 4.56 or earlier

  • Enhanced first generation Ranger Logger (with enhanced serial communications firmware).
    Ranger II with firmware 4.57 or later.
    Ranger III
    Ranger 4 series
    Harmonics Power Logger (1250 & 1280 series)
    Harmonics Analyzer (HA5000 series)
    Power Logger (1230 series) with firmware 4.57 or later

  • Second generation Logger.
    PM6000 Power Master
    PM3000 Power Master
    PM2000 Meter Socket Logger
    PM1000 Single Phase Logger

  • USB connected Logger.
    Ranger PM7000

How is your Logger connected to the computer ?

If using a serial cable, serial to USB converter or serial to Ethernetconverter.

  • Standard first generation Ranger Loggers use a rate of 9600.
  • Enhanced first generation Ranger Loggers use a rate of 38400 or 9600.
  • For second generation Loggers use a rate of 115200 or 57600 (see note below on 230400).

If using a modem.

  • Standard first generation Ranger Loggers use a rate of 9600.
  • Enhanced first generation Ranger Loggers use a rate of 19200 or 9600.
  • For second generation Loggers use a rate of 115200 or 57600.

For USB connected Loggers.

  • For the PM7000 select a rate of 921600.

Notes for first generation Loggers.

If you are not sure that a first generation Logger has enhanced serialcommunications firmware, select 38400 baud anyway. Pronto still talksto the Logger at 9600 and during download the rate is increased to38400 but only if the Logger supports it.

You may select 19200 baud with a first generation Logger but experiencehas shown this rate is often unreliable.

You cannot use 38400 baud for a first generation Logger when using amodem.

Notes for second generation Loggers.

Some serial ports particularly those on laptops do not correctly support115200 baud.

Rates of 115200 and higher are prone to data errors particularly inelectrically noisy environments or with cables longer than a fewmeters.

Standard serial ports do not support 230400 baud. You may select this ratewhen using a USB to serial converter, serial to Ethernet converter oran after-market serial plug in card that supports it.

It has been noticed that some serial to USB converters allow selectionof 230400 baud but the output drivers distort the data waveform andprevent reliable communication.