Series 3700A Switch and Control Cards Reference Manual Section 2: Series 3700A cards general operation3700AS-909-01 Rev. B / December 2011 2-3Item Description1 Card guide (part of Series 3700A)2 Card3 Card edge (part of card)4 Mounting screw (part of card)Verifying card installationTo verify that the card was properly installed:1. If the instrument is controlled remotely (REM is displayed), press EXIT to switch control to local.2. Press SLOT. The name and firmware version of the instrument is displayed.3. Press SLOT again. The name and firmware version of the card in slot 1 is displayed.4. If you have more than one card installed, continue to press SLOT until the slot you just installed isdisplayed.5. Confirm the name and firmware version.6. Press EXIT to return to the operating display.Connection safetyWARNINGConnection information for switching cards is intended for qualified service personnel. Do notattempt to connect DUT or external circuitry to a switching card unless qualified to do so.To prevent electric shock that could result in serious injury or death, comply with thesesafety precautions:Before making or breaking any connections to the switching card, make sure theinstrument is turned off and power is removed from all external circuitry.Do not connect signals that will exceed the maximum specifications of any installedswitching card.If both the rear analog backplane connector of the instrument and the switching cardterminals are connected at the same time, the test lead insulation must be rated to the highestvoltage that is connected. For example, if 300V is connected to the analog backplaneconnector, the test lead insulation for the switching card must also be rated for 300V.Dangerous arcs of an explosive nature in a high energy circuit can cause severe personalinjury or death. If the multimeter is connected to a high energy circuit when set to a currentrange, low resistance range, or any other low impedance range, the circuit is virtually shorted.Dangerous arcing can result (even when the multimeter is set to a voltage range) if theminimum voltage spacing is reduced in the external connections. For details about how tosafely make high energy measurements, see High-energy circuit safety precautions.As described in the International Electrotechnical Commission (IEC) Standard IEC 664, theinstrument is Installation Category I and must not be connected to mains.