Tech Support - FAQ - C1900 - 11

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C1900
FAQ

 

    Question: I like the Pen Adjust feature on my new C1900, How do I upgrade my older units?

    Answer: All C1900's are upgradeable to the latest Firmware. However, the older a unit is, the more involved the upgrade.

 

Basic Rule of thumb: Look at your current Firmware (IC23)

A)

If Firmware (IC23) is C1900-2101: This is a field upgradeable procedure.

   

B)

If Firmware (IC23) is C1900-2001: This may not be a field upgradeable procedure. To verify, you will need to check the speed at which the processor operates* (When C1900 were first introduced, the processor ran at 8MHz. This was later upgraded to 12Mhz. C1900-2001 Firmware had an option to set system speed. C1900-2101 is an EXCLUSIVE 12MHz chip.).

If you have a 12MHz processor, then the upgrade is field upgradable. If you have a 8MHz processor, please contact us and we will gladly convert it for you.

* The only sure way to verify system speed is to find the Crystal located next to the processor chip (XTAL2). The speed should be stamped on the side of the crystal. A Secondary method is to examine the part number of the processor (IC20) itself. If the part number ends in a 3 (MC68HC11D0CFN3), you more than likely have a 12MHz processor board.

 

 

How to upgrade C1900 Firmware:

Detailed Steps:

1)

Remove Firmware (IC23), which is inserted in a 32-pin socket, from Processor board using either an IC puller (preferred), or a small screwdriver.  Be VERY careful not to touch the pins while removing, there is a capacitive charge that could short the board and damage the components.

2)

Install new Firmware. Use caution when aligning not to bend or seat pins incorrectly.

3)

Apply power to the unit. It is generally recommended to always do a factory standard upload after changing Firmware. You can get that procedure by clicking here.

 

How to activate Pen Adjust:

Detailed Steps:

1)

Press until you see .

2)

Press once, you will see  .

3)

Press until you see .

4)

Press until you see .

5)

Press once, you see (You have now enabled Pen Adjustments).

6)

To Escape:

A) If the key is programmed as Home, then simply Press .

B) If not, press  until you see  . Press once, you will see . Press once to return to PV readings.

 

How to access Pen Adjust:

Detailed Steps:

1)

Press until you see .

2)

Press once, you will see .

3)

Press  or   to adjust the pen up-scale or down-scale respectively.

4)

Press to adjust Pen 2 ,3 , & 4 if available, or simply exit the program.

5)

To Escape:

A) If the key is programmed as Home, then simply Press .

B) If not, press  until you return to PV readings.

 

 

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