| Products > Test Equipment |
| AN8008 US $19, 9999count, 1uV, 0.01uA, 0.01Ohm, 1pF resolution meter |
| << < (169/172) > >> |
| floobydust:
There's little information about the format of the calibration bytes. I would make sure all 5 bytes are correct. 0BH,0CH 00FAH 环境温度(25.0°C) = Cold junction ambient temperature (25.0°C). "Adjustable range 0~50°C", reading with input jacks shorted. 0DH~0FH 03BE00H 环境温度默认ADC值 "Ambient temperature default ADC value" --- Code: --- 0 1 2 3 4 5 6 7 8 9 A B C D E F 00: FF FF FF FF FF FF FF FF FF 52 00 FA 00 00 BE 03 --- End code --- |
| andyB2022:
Yep, I have them exactly like that... --- Code: ---FF FF FF FF FF FF FF FF FF 52 0 FA 0 0 BE 3 10 17 F 27 52 3 6E 50 64 4B 3C 3C A FF 40 FF 7 9A D6 81 64 0 96 0 0 80 A4 80 0 80 FB 78 4E 2 9 D3 FA 9 EE FE 9 8B EC 9 C9 19 A 0 0 1 0 1 0 7 98 0 64 0 64 0 64 0 0 0 0 80 0 80 0 80 0 80 0 80 0 80 0 80 0 80 9B 7E EE 7F A 0 EF 2A 0 0 0 0 0 0 0 0 6C 81 0 80 5C 84 E0 7C 18 1 0 0 0 0 0 0 0 0 0 0 0 16 0 10 0 C 0 7 13 1 12 3 0 0 0 0 0 0 0 11 0 D 0 9 15 2 0 4 0 0 0 0 0 0 0 0 0 0 0 A 0 13 0 0 0 0 0 0 0 0 0 0 0 0 0 B 0 0 0 0 D 0 2 10 D 0 3 20 20 0 3 20 20 0 3 10 0 80 0 80 0 80 0 80 41 0 3 5 D 0 2 20 0 80 0 80 0 80 0 80 0 80 0 80 0 80 0 80 0 80 FF FF FF FF FF FF 5A C7 CC F 78 B2 0 0 --- End code --- As someone on the forum experienced same issue Ive found thsee 3 values: FA 00 C0 CE 03 E6 00 00 BD 03 F0 00 48 CE 03 8008 FA 00 00 BE 03 < this is the default value in the datasheet FA 00 C0 CE 03 seemd that fixed it. I will try and come with an update. |
| andyB2022:
After several attempts I have: 28 Celsius with F0 0 48 CE 3 29 Celsius with FA 0 C0 CE 3 33 Celsius with E6 00 48 CE 3 Any ideea on how to get that 25 Celsius ? Got it: AA 0 0 BE 3 Previously I've had FA 0 0 BE 3 and 33C, so I've substracted 33 - 8 = 25 => AA in hex. :-+ |
| sausagemaster:
Not sure whether this has been mentioned somewhere in this thread, but I discovered a way to disable the auto power-off feature with stock firmware. 1. Switch the meter off. 2. Press and hold the "SEL/HOLD" button. 3. Switch the meter on and release the button once it starts beeping. If done successfully, it should beep 5 times. It will then also beep twice every 15 minutes - once to give a warning as usual, then again after 1 minute (this is when it would normally power off, but instead it beeps). Really annoying but whatever. Maybe that's why this function is not documented...? |
| wasedadoc:
--- Quote from: sausagemaster on May 09, 2023, 08:45:18 pm ---Not sure whether this has been mentioned somewhere in this thread, but I discovered a way to disable the auto power-off feature with stock firmware. 1. Switch the meter off. 2. Press and hold the "SEL/HOLD" button. 3. Switch the meter on and release the button once it starts beeping. If done successfully, it should beep 5 times. It will then also beep twice every 15 minutes - once to give a warning as usual, then again after 1 minute (this is when it would normally power off, but instead it beeps). Really annoying but whatever. Maybe that's why this function is not documented...? --- End quote --- It is documented. |
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