Agilent Technologies Switch/Measure manual 34925A D-Sub Connectors for Two- or Four-Wire Mode

Low Frequency Multiplexer Switch Modules 4

34925A D-Sub Connectors for Two- or Four-Wire Mode

Bank 1

Bank 1

Bank 2

																	For orientation, the D-sub connector
																	end of the module is facing you.
							COM COM
1H	1L	2H		2L	3H	3L	1H	1L		4H	4L	14H		14L	5H		5L	20H		20L Interlock1
1	2	3		4	5	6	7		8	9	10	11		12	13		14	15		16	17
Reserved 11H			11L 7H		7L	17H		17L	13H 13L			9H	9L	19H		19L 15H			15L Interlock 1
18		19	20	21	22		23	24	25		26	27	28		29	30		31	32		33
GND	6H	6L		16H	16L 12H		12L	8H		8L	18H	18L	10H		10L		NC	NC		NC	NC
34	35	36		37	38	39	40		41	42	43	44		45	46		47	48		49	50

WARNING As a safety feature, interlock 1 pins (17 and 33) on Bank 1 must be shorted to enable the Bank 1 Analog Bus relays to close. The optional 34925T-001 (for 2-wire) terminal block shorts these pins for you. This feature protects inadvertent routing of high voltages from the Analog Bus to the D-sub connector of the module.

Description	Pin	Description	Pin	Description	Pin	Description	Pin	Description	Pin
1H	1	6H	35	11H	19	16H	37	COM1 H	7
1L	2	6L	36	11L	20	16L	38	COM1 L	8
2H	3	7H	21	12H	39	17H	23	Interlock 1	17
2L	4	7L	22	12L	40	17L	24	Interlock 1	33
3H	5	8H	41	13H	25	18H	43	Reserved	18
3L	6	8L	42	13L	26	18L	44	GND	34
4H	9	9H	27	14H	11	19H	29	No Connect	47
4L	10	9L	28	14L	12	19L	30	No Connect	48
5H	13	10H	45	15H	31	20H	15	No Connect	49
5L	14	10L	46	15L	32	20L	16	No Connect	50

Bank 2

						COM COM
21H	21L	22H	22L	23H	23L	2H		2L	24H	24L		34H	34L	25H	25L 40H 40L Interlock 2
1	2	3	4	5	6	7		8	9		10	11	12	13	14	15	16	17
Reserved 31H 31L 27H 27L 37H							37L 33H 33L				29H 29L 39H 39L					35H	35L Interlock 2
18	19	20	21	22	23		24	25	26		27	28	29	30		31	32	33
GND	26H	26L	36H	36L	32H	32L		28H	28L	38H		38L	30H	30L	NC	NC	NC	NC
34	35	36	37	38	39	40		41	42		43	44	45	46	47	48	49	50

WARNING As a safety feature, interlock 2 pins (17 and 33) on Bank 2 must be shorted to enable the Bank 2 Analog Bus relays to close. The optional 34925T-001 (for 2-wire) terminal block shorts these pins for you. This feature protects inadvertent routing of high voltages from the Analog Buses to the D-sub connector of the

Description	Pin	Description	Pin	Description	Pin	Description	Pin	Description	Pin
21H	1	26H	35	31H	19	36H	37	COM2 H	7
21L	2	26L	36	31L	20	36L	38	COM2 L	8
22H	3	27H	21	32H	39	37H	23	Interlock 2	17
22L	4	27L	22	32L	40	37L	24	Interlock 2	33
23H	5	28H	41	33H	25	38H	43	Reserved	18
23L	6	28L	42	33L	26	38L	44	GND	34
24H	9	29H	27	34H	11	39H	29	No Connect	47
24L	10	29L	28	34L	12	39L	30	No Connect	48
25H	13	30H	45	35H	31	40H	15	No Connect	49
25L	14	30L	46	35L	32	40L	16	No Connect	50

34980A User’s Guide 131