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Wiring procedure

WARNING

The information in this section is intended for qualiﬁed service personnel. Do not

attempt to perform this procedure unless qualiﬁed to do so.

Use the following procedure to wire the Model 7700 module. Make all connections using correct wire size (up to 20 AWG).

Also, make sure to add supplementary insulation around the harness for voltages above 42V peak (see Figure 3).

WARNING

All wiring must be rated for the maximum voltage in the system. For example, if 1000V

is applied to the front terminals of the Models 2700, 2701, or 2750, the plug-in module

wiring must be rated for 1000V.

1. Make sure all power is discharged from the Model 7700 module.

2. Access the screw terminals (see “Screw terminal access” located at the front of this document).

3. Using a small ﬂat-blade screwdriver, loosen terminal screws and install wires as desired. (Figure 3 shows connections to

channels 1 and 2).

4. Route wire along wire-path and secure with cable tie as shown.

5. Fill in a copy of the connection log and afﬁx it to the module cover.

6. Close and lock the cover.

Figure 3

Wire dressing — Model 7700

Connection log

Make a copy of Table 1 and afﬁx it to the cover of the Model 7700. Use this to record connection information and channel

descriptions as needed.

Supplementary

Insulation

CH7

H L

CH8

H L

CH9

H L

CH10

H L

CH21

H L

CH22

AMPS

H L

CH11

H L

CH12

H L

CH13

H L

CH14

H L

CH15

H L

CH16

H L

CH17

H L

CH18

H L

CH19

H L

CH20

INPUT SENSE

H L H L

CH1

H L

CH2

H L

CH3

H L

CH4

H L

CH5

H L

CH6

H L

SENSE

(OHMS, 4 WIRE)

INPUT

(V,2 WIRE)

INPUT

(V,2 WIRE)

ENSE

H L

CH1

H L

CH2

H L

CH3

H L

CH4

H L

Cable tie

Brand	Keithley
Model	7702
Category	Multiplexer
Language	English

Keithley 7702 User Manual

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Keithley 7702 Specifications