This submenu key selects High Density Bipolar 3 (HDB3) line coding.

This submenu key selects Alternate Mark Inversion (AMI) line coding.

This submenu key selects the internally generated Tx Clock.

This submenu key selects a clock signal that is recovered from the receive path.

This submenu key selects a clock from an external reference that is applied to Ext Trigger In.

This submenu key selects the 75 ohm RJ48 connector.

(Option 52 only)

This submenu key selects the 75 ohm BNC connector.

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.

This submenu key adds +20 dB gain to the receive path.

This submenu key sets up a bridged connection with >1000 ohms.

These submenu keys select the framing format.

Select this payload type to test all user channels, the entire data stream (excluding TS0, and TS16 when CAS is active).

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.

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.

Use this payload type to select a single 64 kb channel.

Use this payload type to select 2 consecutive bits within a single 64 kb channel.

Use this payload type to select a single bit within a selected 64 kb channel.

Pressing this submenu key opens the Channel Selection Dialog Box and the Channel Selection submenu.

Press this submenu key to set all unselected channels to “all ones.”

Press this submenu key to set all unselected channels to “idle.”