ch_spec = &(devc->device->channels[ch->index]);
g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
/* Min, max, write resolution. */
ch_spec = &(devc->device->channels[ch->index]);
g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
/* Min, max, write resolution. */