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.

Navigation

[0] Message Index

[#] Next page

[*] Previous page

There was an error while thanking
Thanking...
Go to full version
Powered by SMFPacks Advanced Attachments Uploader Mod