Agilent Technologies Agilent 34921A Multiplexer Switch Modules Official Manual

Low Frequency Multiplexer Switch Modules 4

34921A D-Sub Connectors

Bank 1

Bank 1

Bank 2

For orientation, the D-sub connector end of the module is facing you.

*TSIL represents Temperature Sensor Interface Line. This line is used for temperature interface only.

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 34921T 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.

							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
TSIL* 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
															AMP AMP AMP AMP
GND	6H	6L	16H		16L 12H		12L	8H 8L		18H	18L	10H		10L 41L		41I		42L	42I
34	35	36	37		38	39	40	41	42	43	44		45	46	47	48		49	50

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	GND	34
3L	6	8L	42	13L	26	18L	44	TSIL*	18
4H	9	9H	27	14H	11	19H	29	AMP 41L	47
4L	10	9L	28	14L	12	19L	30	AMP 41I	48
5H	13	10H	45	15H	31	20H	15	AMP 42L	49
5L	14	10L	46	15L	32	20L	16	AMP 42I	50

Bank 2

*TSIL represents Temperature Sensor Interface Line. This line is used for temperature interface only.

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 34921T 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.

						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
TSIL* 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
														AMP AMP AMP AMP
GND	26H	26L	36H	36L	32H	32L		28H	28L	38H		38L	30H	30L	43L	43I	44L	44I
34	35	36	37	38	39	40		41	42		43	44	45	46	47	48	49	50

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	GND	34
23L	6	28L	42	33L	26	38L	44	TSIL*	18
24H	9	29H	27	34H	11	39H	29	AMP 43L	47
24L	10	29L	28	34L	12	39L	30	AMP 43I	48
25H	13	30H	45	35H	31	40H	15	AMP 44L	49
25L	14	30L	46	35L	32	40L	16	AMP 44I	50

34980A User’s Guide 105