ES278 Datasheet, PDF (12/25 Pages) Cyrustek corporation – 4000 Counts Manual DMM

1.10. Temperature Measurement mode
ES278
4000 Counts Manual DMM
Temperature measurement mode takes input signal from ADP pin. The ES278 has ºC to ºF scale
translation circuit and standard K-type thermocouple reference table is built-in. External
cold-junction compensation circuit is still necessary.
Mode
o_C
o_F
FC1~4
0,1,0,0
0,1,0,0
SLACDC / FC6
1,1
0,1
Range
-200 ºC ~ 1350 ºC
-328 ºF ~ 2462 ºF
Input Terminal
ADP V.S. SGND
1.11. ADP
ES278 provides 4 manual range ADP measurement modes for user define. The ADP pin is
auxiliary input terminal for ADC of ES278. The full scale for ADP mode is 400.0mV. If FC5=0, the
minus sign will not be shown on LCD segment.
Mode
FC1~4
SLACDC / FC6
ADP0
1,0,0,1
1,1
ADP1
0,0,1,1
1,1
ADP2
0,0,1,0
1,1
ADP3
0,1,0,1
1,1
Note: If FC5 is set to V-, the minus sign will be disabled.
Full Scale
4000
400.0
40.00
4.000
Input Terminal
ADP V.S. SGND
ADP V.S. SGND
ADP V.S. SGND
ADP V.S. SGND
1.12. Auto Power Off (APO)
ES278 has a default auto power off function. If the meter is idle for more than the given idle time
duration, the chip automatically turns the power off. The idle time to trigger the auto power off
function is set to 30 minutes. When APO is occurred, the state of the meter is reserved. The APO
symbol on the LCD panel indicates whether the auto power off is enabled or not. In some cases, user
might want to disable Auto power off. There are two ways to disable this feature as following:
1. Power on the meter when any of the push functions, except for HOLD, is pressed down.
Note: Powering on the meter while pressing HOLD and lasts 2 seconds turns on all LCD segments until HOLD
is pressed again.
V 1.5
12
2015/12/11