1-1

Chapter 1

Preparation for Use
Title Page
Introduction....................................................................................................... 1-5
Operating Modes............................................................................................... 1-5
Front Panel Operation................................................................................... 1-7
Memory Card Operation............................................................................... 1-7
Computer Operation...................................................................................... 1-8
Printer Operation........................................................................................... 1-8
Modem Operation......................................................................................... 1-8
Measurement Capabilities................................................................................. 1-9
Mx+B Scaling............................................................................................... 1-9
Alarms........................................................................................................... 1-9
Totalizer Channel.......................................................................................... 1-9
Alarm Outputs and Digital I/O...................................................................... 1-9
Applications Software....................................................................................... 1-9
Hydra Starter Package................................................................................... 1-10
Hydra Logger................................................................................................ 1-10
Options and Accessories ................................................................................... 1-10
Memory Card Reader.................................................................................... 1-10
Connector Set, 2620A-100............................................................................ 1-10
Setting Up the Instrument.................................................................................. 1-11
Unpacking and Inspecting the Instrument..................................................... 1-11
Adjusting the Handle .................................................................................... 1-12
Connecting the Instrument to a Power Source.............................................. 1-12
AC Operation............................................................................................ 1-13
DC Operation............................................................................................ 1-13
Input Channels .............................................................................................. 1-13
Measurement Connections................................................................................ 1-14
Using Shielded Wiring.................................................................................. 1-14
Crosstalk........................................................................................................ 1-14
Universal Input Module Connections........................................................... 1-14
Alarm Outputs Connections.......................................................................... 1-17
DC Power.................................................................................................. 1-17
Alarm Outputs .......................................................................................... 1-17
External Trigger Input .............................................................................. 1-17
Digital I/O Connections................................................................................ 1-18
Digital I/O................................................................................................. 1-18