Agilent Technologies Switch/Measure manual 34925A D-Sub Connectors for One-Wired Mode, Bank

4Low Frequency Multiplexer Switch Modules

34925A D-Sub Connectors for One-Wired Mode

Bank 1 Bank 2

Bank 1

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

						COM COM
1	2	3	4	5	6	1H		1L	7	8	27	28	9	10	39	40	Interlock1
1	2	3	4	5	6	7		8	9	10	11	12	13	14	15	16	17
Reserved	21	22	13	14		33	34	25	26	17	18	37	38		29	30 Interlock 1
18	19	20	21	22		23	24	25	26	27	28	29	30		31	32	33
GND 11		12	31	32	23	24		15	16	35	36	19	20	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-002 (for 1-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
1	1	11	35	21	19	31	37	COM1 H	7
2	2	12	36	22	20	32	38	COM1 L	8
3	3	13	21	23	39	33	23	Interlock 1	17
4	4	14	22	24	40	34	24	Interlock 1	33
5	5	15	41	25	25	35	43	Reserved	18
6	6	16	42	26	26	36	44	GND	34
7	9	17	27	27	11	37	29	No Connect	47
8	10	18	28	28	12	38	30	No Connect	48
9	13	19	45	29	31	39	15	No Connect	49
10	14	20	46	30	32	40	16	No Connect	50

Bank 2

						COM COM
41	42	43	44	45	46	2H		2L	47	48		67	68	49	50	79	80 Interlock 2
1	2	3	4	5	6	7		8	9	10		11	12	13	14	15	16	17
Reserved 61		62	53		54	73	74	65		66	57	58	77	78		69	70 Interlock 2
18	19	20	21		22	23	24	25		26	27	28	29	30		31	32	33
GND	51	52	71	72	63	64		55	56	75		76	59	60	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-002 (for 1-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
41	1	51	35	61	19	71	37	COM2 H	7
42	2	52	36	62	20	72	38	COM2 L	8
43	3	53	21	63	39	73	23	Interlock 2	17
44	4	54	22	64	40	74	24	Interlock 2	33
45	5	55	41	65	25	75	43	Reserved	18
46	6	56	42	66	26	76	44	GND	34
47	9	57	27	67	11	77	29	No Connect	47
48	10	58	28	68	12	78	30	No Connect	48
49	13	59	45	69	31	79	15	No Connect	49
50	14	60	46	70	32	80	16	No Connect	50

134 34980A User’s Guide