HD2108/HD2128
- 7 -
V2.3
HD2128.1 and HD2128.2
1.
Input for 2 thermocouples, standard mignon connectors (the upper one is input "A", the lower
one input "B").
2.
External auxiliary power supply connector input.
3.
Battery symbol: displays the battery charge level.
4.
Function indicators.
5.
Secondary display line (temperature measured at input B).
6.
HOLD/
key: freezes the measurement during normal operation; in the menu, increases the
current value.
7.
FUNC/ENTER
key: displays the maximum (MAX), the minimum (MIN) and the average
(AVG) of current measurements. In the menu, confirms the current selection.
When pressed together with the UNIT/UserCal key, starts the calibration procedure for the
probe connected to the instrument.
8.
REL/
key: enables the relative measurement (displays the difference between the current
value and the logged value when the key is pressed); in the menu, decreases the current value.
9.
SERIAL
key (
for HD2128.1
) or SERIAL/ERASE LOG (
for HD2128.2
): starts and ends data
transfer to the serial communication port. In the menu, clears the data contained in the
instrument's memory.
10.
A-B
key
for
HD2128.1
: displays the difference of the two inputs A and B.
LOG/DUMP LOG
key (
for HD2128.2
): during normal operation, starts and ends the saving of
the data in the internal memory; in the menu, starts the data transfer from the instrument's
memory to the PC.
11.
Mini-USB type B connector for USB 2.0 (
only HD2128.2
). For the connection to PC (with
cable CP23).
12.
MENU
key
for HD2128.1
: allows access to and exit from the menu.
A-B/MENU
key
for
HD2128.2
: displays the difference of the two inputs A and B. When
pressed together with the FUNC/ENTER key, allows access to and exit from the menu.
13.
TC SEL/ESC
key: in measurement mode, selects the type of thermocouple K, J, T, N, R, S, B
and E. In the menu cancels the operation in progress without making changes.
14.
UNIT/USER CAL
key: during normal operation, selects the unit of measurement for the
temperature between °C, °F or °K; displays the voltage generated by the probe ("mV") or the
voltage in mV equivalent to the read temperature, and indicated at 0°C ("mV*C"). When
pressed together with the FUNC key, starts the calibration procedure for the probe connected to
the instrument.
15.
ON-OFF/AUTO-OFF
key: turns the instrument on and off; when pressed together with the
HOLD key, disables the automatic turn off.
16.
MAX, MIN and AVG symbols.
17.
Main display line (temperature measured at input A).
18.
Line for symbols and comments.
19.
8-pole MiniDin connector for RS232C. For the connection to PC (with cable HD2110CSNM or
C206) or printer (with cable HD2110CSNM).
