Smart TX etc

Question 1

What is the difference between characterization and configuration memory?

Answer 1

Characterization: is specific to transmitter and cannot be changed. Sent by factory.
Configuration: is parameters able to be programmed or changed for certain things.

Question 2

How to find the AD resolution of a 10V TX with 8bit

Answer 2

Vref/2^bits
2^8=256
10V/256=.039V
This means every .039V results in a bit change of 1

Question 3

What is linearization and where is it found?

Answer 3

Sensors have varying degrees of non-linearization. This must be “characterized” by the manufacturer and stored in the “characterization” memory.

Question 4

What is the output count for 1V input with the following info

• Range: -50 to 150
• Bits: 16
• Voltage reference: 10V

Answer 4

Count=Voltage(2^bit/Vref)
1V(2^16/10V)=6553
@ -50 the bit count will be 6553

Question 5

Smart TX’s are microprocessor based TX’s that are capable of what 3 things?

Answer 5

• Memory
• Programmable
• Capable of performing calculations, self-diagnostics, as well as reporting faults.

Question 6

What are the frequencies used for FSK?

Answer 6

2200 Hz is 0

1200 Hz is 1

Question 7

What 7 features do Smart TX’s that analog ones don’t have.

Answer 7

• Configuration
• re-ranging
• remote communication
• linearization
• damping
• self-diagnostics
• increased accuracy.