# Clocking.HBus.NetRef2Source

Specifies a source to drive the NETREF2
timing signal on the CT bus.

For more information about setting up CT bus clocking and about the rules and restrictions that apply to setting up clocking with CG 6060C boards, refer to Configuring board clocking.

#### Syntax

Clocking.HBus.NetRef2Source = source

#### Access

Read/Write

#### Type

String

#### Default

OSC

#### Allowed values

OSC | NETWORK | STANDALONE

#### Example

Clocking.HBus.NetRef2Source = STANDALONE

#### Details

Valid entries include:

Value | Description
--- | ---
OSC | Specifies that the oscillator use the board's local clock (for diagnostics only).
NETWORK | Specifies that the clock signal be derived from a device source (digital trunk). When using this keyword, you must also specify the trunk number with Clocking.HBus.NetRef2SourceNetwork.
STANDALONE | Specifies that the NETREF2 timing signal is not driven.

#### See also

Clocking.HBus.NetRef2Speed