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Summary of Contents for ENDEVCO 123
- Page 1 Endevco Model 123 3-Channel PE/IEPE Signal Conditioner INSTRUCTION MANUAL IM123 Revision A2 October 28, 2013...
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Page 2: Table Of Contents
Table of Contents Safety..........................3 Description........................4 Wiring Information......................5 Front Panel........................6 Rear Panel........................7 Setting Up the Model 123....................8 Calculating/Setting Gain ………………………………………………………………….… 8 Filter Module Installation…………………………………………………………………..10 Signal Ground/Power Ground Isolation…………………………………………………… 11 Included/Optional Accessories……………………………………………………………... 11 Outline Dimensions......................12... -
Page 3: Safety
Safety Read this manual in its entirety before operating the Model 123 Signal Conditioner. Read all wiring and power hookup instructions and understand the requirements prior to using another manufacturer's products with the Model 123. Insure that any product being interfaced with the Model 123 is wired according to prevailing local safety and operational standards before operating. -
Page 4: Description
The Model 123 also uses low noise linear voltage regulators instead of switching regulators to minimize interference. The Model 123 uses 12 bit DACs, for each channel, to set amplifier gains from 0.00 to 999.9 with 0.5% precision. Amplifier gains can be changed “on the fly” without damage to the instrument. - Page 5 CH1, CH2 and CH3 Signal Inputs Reference the rear panel drawing shown on page 7. Before connecting power to the instrument, verify INPUT POWER (ON/OFF) switch is in the OFF position and the INPUT POWER SELECT switch is set to the correct voltage. Connect inputs and outputs prior to applying power to the instrument.
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Page 6: Front Panel
Front Panel... -
Page 7: Rear Panel
Rear Panel... -
Page 8: Setting Up The Model 123
Setting up the Model 123 Verify the POWER ON/OFF switch is in the OFF position and the POWER INPUT SELECTOR SWITCH is set to the proper input power voltage prior to making any input or output connections to the instrument. - Page 9 g. Depress CH1 (SW5) switch momentarily. The CH1 LED will illuminate. h. Depress GAIN (SW4) switch for CALCULATE/SET gain. The instrument will calculate and set Gain=Output Sensitivity/Input Sensitivity=100/10.52=9.51. This gain value is stored in non-volatile memory and recalled when input power is applied. CH1 LED will extinguish.
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Page 10: Signal Ground/Power Ground Isolation
2. Remove the top cover by removing the two top screws on the rear of the unit. 3. After the top cover is removed, you should see filter sockets as indicated below (6 places). Each socket is labeled on the board with the channel number and LP/HP 4. -
Page 11: Included/Optional Accessories
1. Ensure all power is disconnected from the unit. 2. Remove the top cover by removing the two top screws on the rear of the unit. 3. After the top cover is removed, you will see the DIP swich pictured below, near the back of the unit.
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