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Fluke 2638A/05 User Manual - Page 55

Channel Configuration, About Channel Numbers

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3 Input and Channel Configuration Channel Configuration Channel Configuration This section contains instructions on how to configure the channels after the inputs are connected to the Input Module. About Channel Numbers A channel number (Ch) is a numerical identification associated with a set of terminals on the Input Module. The channel number of the input is determined by the slot number the Input Module is in (1, 2, or 3) followed by the number of the terminal the input is connected to (1 to 22) as illustrated in Figure 3-4. The front-panel inputs are permanently assigned to channel Ch001. Here are some examples on how to determine the channel number of an input: • A voltage source is connected to input terminal 4 (04) in the Input Module and then slid into slot 1. The channel is Ch104. • A thermistor source is connected to input terminal 8 (08) in the Input Module and then slid into slot 2. The channel is Ch208. • A voltage source is connected to the front-panel terminals. The channel is Ch001. Table 3-2 shows channel types and channel numbers. Table 3-2. Channel Types and Numbers Channel Type Input Channel (front panel) Input Channel (rear panel, slot 1) Input Channel (rear panel, slot 2) Input Channel (rear panel, slot 3) Digital I/O Channel Totalizer Channel Math Channel Channel Numbers and Range Reference Ch001 Ch101 to Ch122 Ch201 to Ch222 See "Analog Channel Configuration (Ch001, Ch102 to Ch322)" on page 3-17. Ch301 to Ch322 Ch401 See "Digital I/O Channel Configuration (Ch401)" on page 3-24. Ch402 See "Totalizer Channel Configuration (Ch402)" on page 3-25. Ch501 to Ch520 See "Math Channel Configuration (Ch501 to Ch520)" on page 3-26. 3-9

Section	Page
2638A Users Manual	2
Table of Contents	3
List of Tables	7
List of Figures	9
1 Product Overview and Specifications	11
Introduction	13
Product Overview	13
Front and Rear-Panel Overview	14
Safety Information	18
Screen Capture Feature	20
About this Manual	21
The Product Manual Set	21
How to Contact Fluke	22
Calibration and Repair Information	22
General Specifications	22
Measurement Specifications	24
DC Voltage	24
DC Voltage Input Characteristics	24
DC Voltage Accuracy	25
DC Voltage Additional Errors	25
AC Voltage	25
AC Voltage Input Characteristics	26
AC Voltage Accuracy	26
Additional Low Frequency Errors	26
DC Current	27
DC Current Input Characteristics	27
DC Current Accuracy	27
DC Current Additional Errors	27
AC Current	27
AC Current Input Characteristics	28
AC Current Accuracy	28
Additional Low Frequency Errors	28
Frequency	28
Frequency Accuracy	28
Resistance	29
Resistance Input Characteristics	29
Resistance Accuracy	29
Resistance Additional Errors	29
RTD	30
RTD Temperature Accuracy	30
RTD Measurement Characteristics	30
Thermistor	30
Thermistor Temperature Accuracy	31
Thermistor Measurement Characteristics	31
Thermocouple	31
Thermocouple Temperature Accuracy	31
Thermocouple Measurement Characteristics	33
Digital I/O	33
Totalizer	33
Trigger	33
Alarm Output	33
2638A-100 Universal Input Module	33
General	33
2 Initial Setup and Configuration	35
Introduction	37
Set the Regional Voltage	37
Connect to Mains Power	38
Set the Handle Position	39
Power On and Standby	40
Warm-Up the Product	41
Configure the Product	41
Input Module and Relay Card Installation	42
Set Up Security	45
3 Input and Channel Configuration	47
Introduction	49
Input Wiring	49
The Universal Input Module	49
Wiring Safety and Considerations	50
3-Wire and 4-Wire Sense Input Configuration	51
Input Types and Wiring Diagrams	52
Input Wiring Instructions	53
Channel Configuration	55
About Channel Numbers	55
Basic Channel Operations	57
Open the Channel Setup Menu	57
Set Channels to ON or OFF	58
Verify a Channel	59
Zero a Channel	59
Copy a Channel	60
Save or Load a Channel Configuration (Setup File)	61
Reset the Channel and Test Configuration	63
Analog Channel Configuration (Ch001, Ch101 to Ch322)	63
Current and Voltage Channels	64
Resistance Channels	65
Thermocouple Channels	66
Frequency Channels	67
Thermistor Channels	68
PRT Channels	69
Digital I/O (DIO) Channel Configuration (Ch401)	70
Totalizer Channel Configuration (Ch402)	71
Read Mode	71
Debounce	71
Math Channel Configuration (Ch501 to Ch520)	73
Mx+B, Alarms, and Channel Options	76
Mx+B Scaling	76
HI and LO Channel Alarms	77
Channel Delay	79
Rate of Change	79
NPLC	80
Input Impedance	80
Bandwidth	80
Display As	80
Open Detect	80
4 Scan/Monitor, Record, and Data	81
Introduction	83
Scan	83
About Scan Timing and Sampling	85
Configure a Scan	87
Trigger Type	88
Auto Recording	89
File Destination	89
Sample Rate	89
Data Security	90
Temperature Unit	91
Align Channels	91
Automatic Power Loss Scan Resume	92
Basic Scan Procedures	92
Start a Scan	92
View Scan Data and Statistics	93
Graph the Measurements	94
Monitor	95
Record	96
Record Measurement Data	96
Memory Consumption for Recorded Data	97
Open and View Measurement Data on a PC	97
How to Read the Setup CSV File	99
How to Read the Data CSV File	101
5 DMM Operation	103
Introduction	105
About the DMM Function	105
Input Type Selection and Range Adjustment	105
More Functions (PT385 or PT392)	106
Relative Measurements	106
Graph the Measurements	107
Measurement Statistics	108
6 Maintenance and Care	109
Introduction	111
Clean the Product	111
Replace the Fuse	111
Memory Reset and Factory Reset	112
User-Replaceable Parts and Accessories	113
7 Error Messages and Troubleshooting	115
Introduction	117
Error Messages	117