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Keithley Instruments
28775 Aurora Road
Cleveland, Ohio 44139
1-800-935-5595
tek.com/keithley
Introduction
The 7709 switching module is a two-pole, 6 × 8 matrix switching module. It can connect any combination of six
differential channels of instrumentation to any combination of eight differential device-under-test channels. The
instrumentation can be AC and DC sources, such as internal or external meters or oscilloscopes. This matrix
configuration allows wide flexibility for complex test systems.
Item shipped may vary from model pictured here.
The Model 7709 is a 2-pole, 6 × 8 matrix card with the following features:
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Automatic 2-wire or 4-wire connection to DMM
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6 row × 8 column matrix
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Expandable to larger switch configurations by daisy-chaining or cascading multiple modules
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Two female D-sub connectors are standard for secure hook-up and quick teardown
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300 V, 1 A capacity
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Relay closures stored in onboard memory
If you are using this switching module with the 2700, 2701, or 2750, please see Model 7709
Multiplexer Card User's Guide, Keithley Instruments PA-771.
077147500 / June 2018
Model 7709 6 × 8 Matrix Module
Figure 1: Model 7709
*P077147500*
Instructions for use with DAQ6510
1
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Summary of Contents for Tektronix Keithley 7709
- Page 1 Model 7709 6 × 8 Matrix Module Keithley Instruments Instructions for use with DAQ6510 28775 Aurora Road Cleveland, Ohio 44139 1-800-935-5595 tek.com/keithley Introduction The 7709 switching module is a two-pole, 6 × 8 matrix switching module. It can connect any combination of six differential channels of instrumentation to any combination of eight differential device-under-test channels.
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Page 2: Schematic Information
Model 7709 6 × 8 Matrix Module Instructions for use with DAQ6510 Schematic information Connection and wiring procedures in this document are intended for use by qualified personnel only, as described by the types of product users in the Safety precautions page 19). - Page 3 Model 7709 6 × 8 Matrix Module Instructions for use with DAQ6510 Matrix expansion Basic matrix column expansion The number of columns in a matrix test system can be increased by installing another 7709 in the DAQ6510. Adding a second 7709 increases the total number of columns to 16. The following figure shows a two matrix module system to test 16 DUTs.
- Page 4 Model 7709 6 × 8 Matrix Module Instructions for use with DAQ6510 Figure 4: Two matrix module test system with an external source Daisy-chaining matrix rows To route one or more external sources to other matrix modules, the rows of the modules must be daisy-chained.
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Page 5: Installation
Model 7709 6 × 8 Matrix Module Instructions for use with DAQ6510 Installation Before operating an instrument with a switching module, verify that the switching module is properly installed and the mounting screws are tightly fastened. If the mounting screws are not properly connected, an electrical shock hazard may be present. -
Page 6: Remove A Switching Module
Model 7709 6 × 8 Matrix Module Instructions for use with DAQ6510 To install a switching module into the DAQ6510: 1. Turn off the DAQ6510. 2. Disconnect the power cord from the power source. 3. Disconnect the power cord and any other cables that are connected to the rear panel. 4. - Page 7 Model 7709 6 × 8 Matrix Module Instructions for use with DAQ6510 To remove a switching module from the DAQ6510: 1. Turn off the DAQ6510. 2. Disconnect the power cord from the power source. 3. Disconnect the power cord and any other cables that are connected to the rear panel. 4.
- Page 8 Model 7709 6 × 8 Matrix Module Instructions for use with DAQ6510 50-pin D-shell (DB-50) 25-pin D-shell (DB-25) Matrix terminal Matrix terminal Matrix terminal Row 1 HI Col 3 Hi Row 1 HI Row 2 Lo Col 4 Lo Row 2 HI ——...
- Page 9 Model 7709 6 × 8 Matrix Module Instructions for use with DAQ6510 The connector cover for the 25-pin D-shell connector on the Model 7709 must be installed if the connector is not going to be used. If the connector is left open, an electrical shock hazard may be present.
- Page 10 Model 7709 6 × 8 Matrix Module Instructions for use with DAQ6510 Connecting ribbon cable assembly The following figure shows the connector of the prepared ribbon cable assembly mates to the 50-pin D-shell connector of the Model 7790. Make sure the connector cover for the 25-pin D-shell connector is installed if it is not going to be used.
- Page 11 Model 7709 6 × 8 Matrix Module Instructions for use with DAQ6510 Row daisy-chain connections Row daisy-chain ribbon cable assembly A convenient method to daisy-chain the two 7709s is to use a 25-conductor ribbon cable assembly with IDC ribbon cable connectors attached to it. For the DAQ6510, a two-connector ribbon cable assembly will daisy-chain two matrix modules.
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Page 12: Typical Connections
Model 7709 6 × 8 Matrix Module Instructions for use with DAQ6510 Ribbon Cable* Matrix DB-25 Ribbon Cable* Matrix DB-25 Conductor Color Terminal Pin # Conductor Color Terminal Pin # —— —— Brown Row 1 Hi Yellow Row 1 Lo Green Row 6 Hi Orange... - Page 13 Model 7709 6 × 8 Matrix Module Instructions for use with DAQ6510 Figure 13: Two-wire resistor or thermistor connections Figure 14: Four-wire resistance or RTD connections Figure 15: AC or DC voltage connections 077147500 / June 2018...
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Page 14: Connection Log
Model 7709 6 × 8 Matrix Module Instructions for use with DAQ6510 Connection log You can use the following table to record connection information and channel descriptions as needed. Column/Row Color Description Col 1 Col 2 Col 3 Col 4 Col 5 Col 6 Col 7... -
Page 15: Channel Operation
Model 7709 6 × 8 Matrix Module Instructions for use with DAQ6510 Operation The following summarizes basic operation and provides operating information specific to the 7709. Channel operation Channel operation is used to connect matrix columns to the DAQ6510. With a 2-wire function selected, channels 1 to 8 can be closed. - Page 16 Model 7709 6 × 8 Matrix Module Instructions for use with DAQ6510 Rows 1 and 2 Normal DAQ6510 operation is used to close rows 1 and 2 channels to connect a DUT to the DMM. With a 2-wire function selected, such as DC voltage, channels 1 to 8 can be closed. When one of these channels is closed, channel 50 automatically closes to connect row 1 to the DMM Input.
- Page 17 Model 7709 6 × 8 Matrix Module Instructions for use with DAQ6510 Rows 3 to 6 As shown in figure 1, channels 17 to 48 are the channels for rows 3 to 6. These channels can only be closed using multiple channel operation (SCPI :ROUTe:MULTiple:CLOSe or TSP channel.multiple.close). When you close multiple channels, only the specified channels close.
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Page 18: Current Measurements
Factory service To return the switching module to Keithley Instruments for repair: ▪ Call the Repair Department at 1-800-833-9200 or send an email to RMAREQUEST@tektronix.com for a Return Material Authorization (RMA) number. ▪ Carefully pack the instrument in the original packing carton. -
Page 19: Safety Precautions
Safety precautions The following safety precautions should be observed before using this product and any associated instrumentation. Although some instruments and accessories would normally be used with nonhazardous voltages, there are situations where hazardous conditions may be present. This product is intended for use by personnel who recognize shock hazards and are familiar with the safety precautions required to avoid possible injury. - Page 20 For safety, instruments and accessories must be used in accordance with the operating instructions. If the instruments or accessories are used in a manner not specified in the operating instructions, the protection provided by the equipment may be impaired. Do not exceed the maximum signal levels of the instruments and accessories. Maximum signal levels are defined in the specifications and operating information and shown on the instrument panels, test fixture panels, and switching cards.
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