www.vscom.de
January 24, 2018

VScom Products Serial Speed Calculator

This Calculator checks if a particular serial speed is possible on many VScom serial ports. Even if the maximum bitrate a serial port can realize is very high, this does not ensure all lesser rates are physically possible.

Enter the target bitrate for the application in the input field, and click on the button for "Calculate It". For each group of VScom products the result is given as
  a) the best achievable bitrate, and
  b) an 'OK' or 'BAD' result. In the second case the deviation is given in percent.
Up to 3% deviation are consided good for asynchronous data transmission.
Details show internal results, and the formulas used for calculation.

On many systems the calculation will already happen while typing.

      Details
(1) Baltos iR 5221, iR 3220 and iR 2110
(2) NetCom Plus 111 Mini and 113 Mini
(1) NetCom Plus 111, 113 and 123 WLAN
(1) NetCom Plus 211, 213
(3) NetCom Plus 411, 413, 411 POE and 413 POE
(3) NetCom Plus 811, 813, 811 POE, 813 POE, 811 DIO
(2) USB-Com Plus and USB-Com Plus ISO
(2) USB-2Com Plus and USB-2Com Plus ISO
(3) USB-4Com Plus and USB-4Com Plus ISO
(3) USB-8Com Plus and USB-8Com Plus ISO
(2) USB-Com ECO and USB-Com ECO ISO
(2) USB-2Com ECO
(2) VScom USB-COM Mini and VScom USB-COM DB9
(3) USB-4Com ECO and USB-8Com ECO
(5) NetCom 111, 113 and 211
(5) NetCom 411, 413, 811 and 813
(4) NetCom PRO / WLAN
(4) VScom PCIex E-Series
(4) VScom UPCI H-Series
(5) VScom UPCI L-Series
(5) Built-In Com1 (Microsoft)

If a certain bitrate is possible it does not mean it is ready for proper use. This depends on other properties of the serial interface as well. For example high bitrates with RS232 are very difficult at least or not possible at all.

Formulas used for calculation. The used formula is mentioned in parantheses at the product names.
1. bitrate = F / TCR / Divisor (TCR ∈ {13,16}, Divisor ∈ [1,16383])
2. bitrate = MBase / Divisor (Divisor ∈ [2,131064], special cases {0,1})
3. bitrate = MBase / Divisor (Divisor ∈ [2,524256], special cases {0,1})
4. bitrate = F / TCR / (CPR / 8) / Divisor (TCR ∈ [4,16], CPR ∈ [8,255], Divisor ∈ [1,65535])
5. bitrate = F / 16 / Divisor (Divisor ∈ [1,65535])