Teledyne 9110AH - Nitrogen oxides analyzer - Manual (Page 155)

TELEDYNE Model 9110AH NO
X
Analyzer Operator Manual, 01620, Rev. F
9-39
9.3.3.1 ADC/DAC Calibration Procedure
Due to the stability of modern electronics, this procedure should only need to be performed if a
major sub-assembly is exchanged or when the display voltage does not match the input voltage
or current to the V/F card. After completion, a Factory Calibration Procedure should be
performed, see Section 9.1.6.
Before the actual calibration is performed, switches on the V/F card must be correctly set and
jumpers set on the motherboard. Jumper and switch setting changes must be performed
with the instrument power OFF.
Motherboard Jumpers
The motherboard contains 4 pairs of jumpers JP1 - JP8, one pair for each analog output
channel. Each channel can be configured for either voltage or current output. Use Table 9-7 to
configure the jumpers.
Table 9-7: Motherboard Jumper Settings
Analog output
Terminal Pair
Rear panel
Jumper Pair
Jumper Setting for
Voltage Mode Jumper Setting for
Current Mode
DAC 0 - NO
x
3-4 JP3 - JP4 B-C A-B
DAC 1 - NO 5-6 JP1 - JP2 B-C A-B
DAC 2 - NO2 1-2 JP5 - JP6 B-C A-B
DAC 3 - TEST 7-8 JP7 - JP8 B-C A-B
V/F Board Switch Settings
There are 2 different types of current outputs, Non-Isolated (std equipment) and Isolated. Each
requires a different switch setting shown below. If you are operating the instrument in voltage
output mode, the switches should be set to the desired voltage range.
Table 9-1: V/F Board Switch Settings
DAC # Sw 1 Sw 2 Sw 3 Sw 4 Sw 5 Sw 6 Sw 7
0 ON* OFF* OFF*
1 ON* OFF* OFF*
2 ON* OFF* OFF*
3 ON* OFF* OFF*
*Required settings