Compliance Information
•Handle carriers by available handles or edges only; avoid touching the printed circuit boards or connectors.
•Place a removed component board-side-up on an antistatic surface or in a static shielding container. If you plan to return the component to the factory, immediately place it in a static shielding container.
Avoid contact between the printed circuit boards and clothing. The wrist strap only protects components from ESD voltages on the body; ESD voltages on clothing can still cause damage.
Never attempt to remove the printed circuit board from the metal carrier.
Caution For safety, periodically check the resistance value of the antistatic strap. The measurement should be between 1 and 10 megohms (Mohm).
Compliance Information
The following sections provide compliance information that applies to the FCC and the PA-E3 serial port adapter, which has been designed to meet these requirements. Modifications to this product that are not authorized by Cisco Systems, Inc., could void the various approvals and negate your authority to operate the product.
BABT Compliance
The BABT607116 marking on the PA-E3 signifies that it meets United Kingdom directive 607116 and has been designed to BABT standards. The BABT label is located on the top of the PA-E3; Figure 2-1 shows the BABT label for the PA-E3.
Figure 2-1 BABT Label for PA-E3 Serial Port Adapter
ITI-T recommendation G.823 specifies that it is important to restrict jitter gain. Figure 4 of G.823 shows a typical jitter transfer characteristic. (Note that small jitter gain is allowed.) British Standard 6328: Section 8.1 1990 gives the allowable gain as 0.5 dB. The PA-E3’s line mode clocking complies with these sections.
TBR24 Compliance
When the PA-E3 is in line clocking mode, jitter is not attenuated, and any jitter received is transferred to the line. If input jitter exceeds the limits of TBR24, then output jitter will not meet TBR24 transfer specifications. Line clocking mode is intended for use only where the connection involves a single hop, and where clock timing will not be transferred to other network equipment.
When not in line clocking mode, the PA-E3 complies with TBR24 standards.
2-6PA-E3 Serial Port Adapter Installation and Configuration
