3.0 CONFIGURATION
The Model 2703-X21 is equipped with one DIP set containing eight switches (externally accessible), as well as seven jumpers (internal). These switches and jumpers allow configuration of clocking, data rate, and test options. The Model 2703-X21 is also equipped with an internal switch that allows selection of 115 or 230 VAC power inputs (Note: this switch is not present in Models 2703-X21-UI and 2703-X21-DC). This section describes switch and jumper locations and explains all possible configurations.
3.1 EXTERNAL DIP SWITCH SETTINGS
The Model 2703-X21’s DIP switch set is located on the underside of the unit (see Figure 1, below). Figure 2 (below), shows the orientation of the switch set. All possible settings for the Model 2703- X21’s switches are presented in the summary table and descriptions on the following pages. If you have additional questions regarding configuration, contact Patton Technical Support at (301) 975-1000.
S1
Figure 1. Underside of Model 2703, showing external DIP switch location
Switch Set S1
The configuration switches on S1 set clocking, rate adaptation, loopback enable, and data invert. The default settings are summarized in the table below.
S1 SUMMARY TABLE
Position | Function | Factory Default |
| | | | |
S1-1 | Clock Master/Slave | On | | Master |
| | | | |
S1-2 | Rate Adaptation | Off | } | 2.048 Mbps |
S1-3 | Rate Adaptation | Off |
| | | | |
S1-4 | Test Enable | Off | | Front Panel |
| | | | |
S1-5 | Data Inversion | Off | | Not Inverted |
| | | | |
S1-6 | Not Used | Off | | N/A |
| | | | |
S1-7 | Not Used | Off | | N/A |
| | | | |
S1-8 | Not Used | Off | | N/A |
| | | | |
S1-1: Master/Slave Clock
The setting for switch S1-1 determines whether the Model 2703-
X21 provides the master clock, or is slaved to another clock source.
S1-1 | Setting |
On | Model 2703-X21 is master |
Off | Model 2703-X21 is slave, (clock is recovered |
| from the network) |
