Instructions

UM-0085-B09 DT80 Range User Manual Page 404
RG
 Auto-ranging
The process of changing amplifier gain automatically so that the signal is amplified as much as is possible without
exceeding output limits.
 base date and time
The DT80’s base date is 0:00:00 on 01/01/1989. All timestamps are stored as offsets from this point in time.
 bit
The smallest unit of information in a computer. A bit has a single value: either 0 or 1. Computers generally store
information and execute instructions in bit-multiples called bytes.
 bps
bits per second, a measure of data transfer rate

bridge
A sensitive and stable means of measuring small changes in resistances. They are particularly useful when applied
to strain gauges (as found in pressure sensors and load cells). See Bridges (P311).
 buffer
An area of memory where data is held temporarily until the system is ready for it, or in case it is needed in the future.

Byte
A unit of information that is eight bits long
 CAN
Controller Access Network. A standard network protocol widely used in the automotive industry. The dataTaker
CANgate product allows a DT80 to log data from a CAN network.
 carlson meter
A sensor for measuring strain, which works by detecting the change in resistance of a pair of steel wires.
 carriage return (CR)
An ASCII character (code 13 decimal) often used to mark the end of a line of text or a data record.

channel
Describes a measurement to take, or a control action to perform.

channel definition
A channel’s ID followed by any channel options (in round brackets). See Figure 7 (P48).

channel ID
A channel’s number and type (e.g.
3TK). See Figure 7 (P48).
 channel list
A list of channel definitions within one report schedule.

channel table
An internal DT80 data structure that stores details of all defined channels. The channel table is limited to a maximum
of 1000 entries.
A channel table entry is used each time a channel is referenced in the current job. For example, the job
RA10S T 4V 1CV(W)=1CV+1 ALARM2(1CV>10)"boo"{1DSO=0}
uses 5 channel table entries (for T, 4V, 1CV, 1CV and 1DSO).
 clock
The DT80 a real-time clock/calendar, which you can set to your actual time
 CMRR
Common-Mode Rejection Ratio. A measure of the influence of common-mode voltage (unwanted) on the output of
the DT80’s instrumentation amplifier (see common-mode voltage (P405) below).
More precisely, CMRR is the ratio of the common-mode voltage at the amplifier’s input to the common-mode voltage
at the amplifier’s output, expressed in dB. It indicates the quality of a measuring system’s input electronics. Relevant
to basic (differential) inputs only.
where
• VCM is an applied common mode voltage
• Vout is the resulting output voltage
• AV is the amplifier's voltage gain