Fluke 2625A, 2635A service manual 11 12 13 14 15 16 17 18 19 3 4 5 6 7 8 9

Performance Testing and Calibration	4
Performance Tests

2-WIRE (2T) CONNECTION

SOURCE

(4-WIRE)

11 12 13 14 15 16 17 18 19 20

H L H L H L H L H L H L H L H L H L H L

SENSE	H L	H L	H L	H L	H L	H L	H L	H L	H L	H L
(4-WIRE)
	1	2	3	4	5	6	7	8	9	10
					RESISTANCE
						OR
					RTD SOURCE

USE H AND L TERMINALS FOR ANY CHANNEL.

•CHANNEL 0 ON FRONT PANEL

•CHANNELS 1 THROUGH 20 ON REAR

PANEL INPUT MODULE (CHANNEL 1 SHOWN HERE).

4-WIRE (4T) CONNECTION

SOURCE

(4-WIRE)

SENSE

(4-WIRE)

11 12 13 14 15 16 17 18 19 20

H L	H L	H L	H L	H L	H L	H L	H L	H L	H L
H L	H L	H L	H L	H L	H L	H L	H L	H L	H L

1 2 3 4 5 6 7 8 9 10

RESISTANCE

OR

RTD SOURCE

USE H AND L TERMINALS FOR TWO CHANNELS ON REAR PANEL INPUT MODULE. CONNECTIONS FOR CHANNEL 1 SHOWN HERE WITH CHANNEL 11 PROVIDING ADDITIONAL TWO CONNECTIONS.

FOR EACH 4-WIRE CONNECTION, ONE SENSE CHANNEL (1 THROUGH 10) AND

ONE SOURCE CHANNEL (SENSE CHANNEL NUMBER +10 = 11 THROUGH 20) ARE USED.

s27f.eps

Figure 4-2. 2T and 4T Connections

4-9