Connects the first or last group to the External Coax.
Gx6021ConnectGroupToExternalCoax (nHandle, nGroupAOrD, pnStatus)
Name |
Type |
Comments |
nHandle |
SHORT |
Handle to a GX6021 board. |
nGroupAOrD |
SHORT |
Specified either first or last group number, group number can be 0 (GX6021_GROUP_FIRST) or 3 (GX6021_GROUP_LAST). |
pnStatus |
PSHORT |
Returned status: 0 on success, negative number on failure. |
The first Group (GX6021_GROUP_FIRST) and the last group (GX6021_GROUP_LAST) have an additional really. Both relays are connected to the output connector (P21 and P22). The relays enable the first and/or last groups to be connected to an External Coax cable. This connection enables either a Daisy Chain connection to other GX6021 boards or to make a Loop Back through the Factory install a Loop Back Coax Cable.
Using the default Factory install a Loop Back Coax Cable enable a short path connection between groups, e.g. connecting group 2 and 3.
Use the Gx6021DisconnectGroupToExternalCoax function in order to disconnect a group from the External Coax.
See the Gx6021ConnectChannels and Gx6021DisconnectChannels functions for details.
The Gx6062GetChannel function can be used to retrieve the current channel state.
The Gx6021GetChannel function can be used to retrieve the current channel state.
|
Caution: 1. Make sure that the switching will not cause a closed loop, which may cause distortions in high frequency signals. 2. When closing a relay, verify that all other relays on the same circuit that may cause a short are disconnected (a delay may be required between switching commands). Low Impedance sources such as power supplies may cause irreversible damage to this product when shorted to other signals. |
The following example connects the last group to the External Coax:
SHORT nStatus;
Gx6021ConnectGroupToExternalCoax (nHandle, GX6021_GROUP_LAST, &nStatus);
Gx6021ConnectChannels, Gx6021DisconnectChannels, Gx6021Open, Gx6021SetGroupRelays, Gx6021GetChannel, GxSWGetErrorString
