2.2 Cable Management
The HD-E1 module uses a future bus connector on the front panel and requires the use of cables with compatible plugs for access to the E1 signals. These cables are ordered separately from the module and need to be specified according to the termination option for the module (75-ohm or 120-ohm) and the required cable length for the site.
Note Contact your local Patton sales representative if the shipment does not include the required cables for the module.
Chapter 7 of the OnSite Series Administrator’s Reference Guide provides information on the location and signal pin-out for each of the 21 E1 ports on the future bus connector. Each module requires six cables for access to all 21 E1 ports. When installing the cables, make sure that the cable bundle does not cause strain on the future bus connector by pulling it up or down or sideways. You may tie the cable bundle together using a strap, as shown in Figure 2, to create a strain relief bend. In addition, use another strap, as shown in Figure 2, to tie the cable bun- dle to the rack post. This additional strap secures the cable bundle in place and prevents accidental movement that may cause strain to the connector.
Make sure that cable plug has the correct orientation before inserting the plug into the module. The plug should be inserted within a single section of the future bus connector with the release latch facing down. (The mod-
CAUTION ule has six, 24-pin connector sections.) The plug should snap into place smoothly without the use of force. Wrong insertion may bend the connec- tor pins.
Figure 2. Cable dressing for the HD-E1 module
OnSite Expansion Modules Quick Start Guide | 3 |
