Definition of Air head interface of HK-2000 Data Acquisition Instrument

Com do						Di				Ad da
Aviation plug	Cn1500	Definition	DB9 master	Description symbol		Aviation plug	Cn1401	Definition		Aviation plug	Cn1900	Definition
1	1	Gnd	5			1	1	In00 +		1	1	Ain0
2	2	Rs232_rxd2	3	Ttys3		2	2	In00-		2	2	A/d_gnd
3	3	Rs232_txd2	2			3	3	In01 +		3	3	Ain1
4	5	Erxb_rs232	3	Ttys6		4	4	In01-		4	4	A/d_gnd
5	6	Etxb_rs232	2			5	5	IN02 +		5	5	Ain2
6	8	Erxd_rs232	3	Ttys8		6	6	IN02-		6	6	A/d_gnd
7	9	Etxd_rs232	2			7	7	In03 +		7	7	Ain3
8	11	Etxc_rs232	2	Ttys7		8	8	In03-		8	8	A/d_gnd
9	12	Erxc_rs232	3			9	9	In04 +		9	9	Ain4
10	14	Etxa_rs232	2	Ttys5		10	10	In04-		10	10	A/d_gnd
11	15	Erxa_rs232	3			11	11	In05 +		11	11	Ain5
12	16	Rs232_txd3	2	Ttys4		12	12	In05-		12	12	A/d_gnd
13	17	Rs232_rxd3	3			13	13	In06 +		13	13	Ain6
14	21	Rs485_a		Ttys1 half duplex		14	14	In06-		14	14	A/d_gnd
15	22	Rs485_ B		Pa21 control direction		15	15	In07 +		15	15	Ain7
16	23	Relay00				16	16	In07-		16	16	A/d_gnd
17	24	Relay01				17	17	In08 +		17	17	Ain8
18	25	Relay02				18	18	In08-		18	18	A/d_gnd
19	26	Relay03				19	19	In09 +		19	19	Ain9
20	27	Relay04				20	20	In09-		20	20	A/d_gnd
21	28	Relay05				21	21	In10 +		21	21	Ain10
22	29	Relay06				22	22	In10-		22	22	A/d_gnd
23	30	Relay07				23	23	In11 +		23	23	Ain11
24	31	Relay08				24	24	In11-		24	24	A/d_gnd
25	32	Relay09				25	25	In12 +		25	25	Ain12
26	33	Relay10				26	26	In12-		26	26	A/d_gnd
27	34	Relay11				27	27	In13 +		27	27	Ain13
28	35	Relay12				28	28	In13-		28	28	A/d_gnd
29	36	Relay13				29	29	In14 +		29	29	Ain14
30	37	Relay14				30	30	In14-		30	30	A/d_gnd
31	38	Relay15				31	31	In15 +		31	39	V/I _out
32	39	Relay_24v				32	32	In15-		32	40	A/d_gnd
33	40	Relay_24v				33	Null	Null		33	43	A/d_gnd
34	41	Relay_24v				34	Null	Null		34	44	Ain15
35	42	Relay_gnd	5			35	Null	Null		35	Null	Null
36	43	Relay_gnd	5			36	Null	Null		36	Null	Null
37	44	Relay_gnd	5			37	Null	Null		37	Null	Null