Disconnects the first or last group from the External Coax.
Gx6021DisconnectGroupToExternalCoax (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 Gx6021ConnectGroupToExternalCoax function in order to connect a group to the External Coax.
See the Gx6021ConnectChannels and Gx6021DisconnectChannels functions for details.
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 disconnects the last group to the External Coax:
SHORT nStatus;
Gx6021DisconnectGroupToExtCoax (nHandle, GX6062_GROUP_LAST, &nStatus);
Gx6021ConnectGroupToExternalCoax, Gx6021ConnectChannels, Gx6021DisconnectChannels, Gx6021Open, Gx6021SetGroupRelays, Gx6021GetChannel, GxSWGetErrorString
