Google translation from chinese to english UT81A/B Data Communication Protocol Communication Protocol: 9600 ,n ,8 ,1 1. Starting: From X5A, 4 last word as (each word 1 to 10 digit, eg 195 represent X00,X01,X09,X05), calibration and matrix X5A X00 X01 X09 X05 X57 2. 1) Test Mode (1 byte): Voltage (0), Current (1), Frequency (2), (waveform | 0x80) Capacitance (3), Resistance (4), off (5), Didoe (6), 2) The waveform table operation (1 byte): stop (0), running (1), callback (2) 3) the rate of the waveform table (1 byte): Manual (0), Auto (1) 4) Automatic time-base waveform table (1 byte): Manual (0), Auto (1) 5) The reading selection (1 byte): current / frequency (0), AC / fill ratio (1) 6) the vertical choice (1 byte): Voltage 20mV (0), 50mV (1), 100mV (2), 200mV (3), 500mV (4), 1 V (5), 2.0 V (6), 5 V (7), 10 V (8), 20 V (9), 50 V (10), 100 V (11), 200 V (12), 500 V (13) Current 20uA (0), 50uA (1), 100uA (2), 200uA (3), 500uA (4), 1mA (5), 2.0mA (6), 5mA (7), 10mA (8), 20mA (9), 50mA (10), 100mA (11), 200mA (12), 500mA (13), 1 A (14), 2.0 A (15), 5 A (16) 7) The vertical displacement (1 byte): -60 ---- 60, 16pix/div down 8) Time base (1 byte): 1ns (0), 2ns (1), 5ns (2) 10ns (3), 20ns (4), 50ns (5) 100ns (6), 200ns (7), 500ns (8) 1us (9), 2us (10), 5us (11) 10us (12), 20us (13), 50us (14) 100us (15), 200us (16), 500us (17) 1ms (18), 2ms (19), 5ms (20) 10ms (21), 20ms (22), 50ms (23) 100ms (24), 200ms (25), 500ms (26) 1 s (27), 2 s (28), 5 s (29) 9) The waveform display origin (1 byte): -76 --- 76, 20pix/div 10) polarity (1 byte): rising edge (0), falling (1) 11) The trigger level (1 byte): -60 --- 60 12) trigger mode (1 byte): Auto (0), normal (1), single (2) 13) resistance range (1 byte): 400 (0), 4K (1), 40K (2), 400K (3), 4M (4), 40M (5) 14) Auto range digital meter (1 byte): manual (0), auto (1) 15) measured the relative number table (1 byte): the relative void (0), relative efficiency (1) Reading the data area (total 20 bytes) The first reading of 10 ASCII bytes The second reading of 10 ASCII bytes (only valid when the waveform mode, the other mode is empty) Waveform data area (optional zone number table status is not sent) 160 bytes, corresponding to 160 sampling points Note: In addition to the starting area, there may be a single X5A, the other office does not appear, if contains X5A, must be replicated a X5A, the formation of X5A Yes, that is X5A, X5A, still a byte count.