Configuration Menu

Key Sequence: Configuration

Signal Setup

E1 Signal Setup (1 of 2)

Test Mode This signal setup has no submenu keys. Line Code Refer to “Line Code: HDB3 and AMI”. HDB3 This submenu key selects High Density Bipolar 3 (HDB3) line coding. AMI This submenu key selects Alternate Mark Inversion (AMI) line coding. Tx Clock Refer to “TxClock: Internal, Recovered, External”. Internal This submenu key selects the internally generated Tx Clock. Recovered This submenu key selects a clock signal that is recovered from the receive path. External This submenu key selects a clock from an external reference that is applied to Ext Trigger In. Connector: RJ48, 120 ohms This submenu key selects the 120 ohm RJ48 connector. RJ48, 75 ohms This submenu key selects the 75 ohm RJ48 connector. (Option 52 only) BNC, 75 ohms This submenu key selects the 75 ohm BNC connector.

 

E1 Signal Setup (2 of 2)

Rx Input: Terminate This submenu key selects terminate mode. Terminations on the receive side can be 75 ohm or 120 ohm, or can be bridged for higher resistance. Monitor This submenu key adds +20 dB gain to the receive path. Bridge This submenu key sets up a bridged connection with >1000 ohms. Framing: PCM30, PCM30CRC, PCM31, and PCM31CRC These submenu keys select the framing format.

Payload Setup

E1 Payload Setup

Payload Type: 2.048Mb Select this payload type to test all user channels, the entire data stream (excluding TS0, and TS16 when CAS is active). Nx64kb, 64kb, 16kb, and 8kb In these payload types, the Channel Selection Dialog Box allows selection of one or more channels for testing, from 1 through 31. Press the Edit Channel submenu key to open the Channel Selection Dialog Box. Use the arrow keys or the rotary knob to scroll through the channels. Press the Select Channel submenu key to select a channel or to clear an existing selection. Then press the Enter key or the Rotary Knob to enter the selection. If the Back submenu key or ESC is pressed, then any changes to channel selection are ignored, the dialog box is closed, and the Payload Sub Channel submenu is displayed. Nx64kb In this payload type, any number of channels can be selected, including all or none. Because multiple channels can be selected, the Channel Selection submenu offers two additional submenu keys: Select All Channels and Clear All Channels. Refer to Figure: “E1 Configuration Submenu Keys”. 64kb Use this payload type to select a single 64 kb channel. 16kb Use this payload type to select 2 consecutive bits within a single 64 kb channel. 8kb Use this payload type to select a single bit within a selected 64 kb channel. Payload Channel: Edit Channel Pressing this submenu key opens the Channel Selection Dialog Box and the Channel Selection submenu. Other Channels When this configuration line is selected, the Other Channels submenu is displayed. All Ones Press this submenu key to set all unselected channels to “all ones.” Idle Press this submenu key to set all unselected channels to “idle.”

 

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