Control
Control
The control system ties the room together — touch panels and automation that
power gear on and off, switch sources, and drive the displays and LED walls.
It’s an AMX NetLinx system built around an AMX NX-3200 central controller
(in the AV room left rack). The source lives in
Automation/amx/
(Main.axs, include/, device module/s, and touch-panel files in TP/).
Network
- VLAN 21, subnet
192.168.30.0/24, DHCP from the EdgeRouter, authoritative (yellow cabling). See Networks. - Control Switch — a Cisco SG-300 (
192.168.30.206) in the AV room left rack; the Control Room Switch is an M4250 in the video control room. The Control VLAN reaches every AV switch, so control and wake-on-LAN work anywhere.
What the control system drives
The AMX modules and confirmed deployments:
| Device | Where |
|---|---|
| NovaStar H5 LED-wall processor | drives the auditorium main + rear-confidence LED walls |
| LG multiview TVs (webOS) | video control room — the switcher and shader positions |
| Sharp PN-LE901 displays | auditorium balcony, green room, weekends office |
| Panasonic PT-EZ590 projector | Atrium, over RS-232 from its SVSi decoder; its LAN doesn’t work — see Atrium projector (the auditorium has no projector — LED walls only) |
| NEC NP-V300W projector | Legato, over RS-232 from its SVSi decoder; also networked — see Legato projector |
Power control
Rack power is controlled in almost every case by Middle Atlantic RackLink
PDUs (the RLNK-* devices — rack room, control room, wireless-cam, the server-room
signage rack, plus older contact-closure units in M21-left and Under-Stage-Right).
AMX does not drive the signage rack’s unit; it is switched by hand from its web UI.
Two exceptions still in service: a legacy AMX REL-8 relay controller, and the
NX-3200 itself, which currently switches power to the rear confidence monitor.
Two kinds of RackLink are in service, and they behave differently:
- RLNK-915R (the room units,
.15–.24): 8 individually-named switched outlets, driven by AMX and also switchable from the unit’s web UI. -
RLNK-SW715R relays —
RLNK-STAGE-RELAY(.25, Under-Stage-Right) andRLNK-M21-RELAY(.26, M21-left). Each has 5 switched outlets plus 5 dry-contact closures (the contacts trigger amplifier standby, keeping amps off the switched-outlet inrush). On these units outlets 1 and 2 are always-on (unswitched) and don’t appear in the web UI, so the switched outlets are numbered 3–7. AMX’s raw RackLink protocol (TCP60000) is refused on these two, so they’re controlled from the web UI or its form endpoint:POST /OutletSubmit.cgiwithoutlet=<3-7>&command=ON|OFF|REBOOT(status is a CSV at/js/status.zhtml, outlet states in fields 8–12 mapping to outlets 3–7). The outlet/relay assignments live inAutomation/amx/include/racklink.axi(rlnk_audio_system_on/rlnk_amplifiers_on):Stage relay ( .25)Powers outlets 1–2 always-on outlet 3 dLive Mix Rack outlet 4 IP6 outlet 5 ME1 contact 9 / 10 Sub Amp 1 / 2 (standby) Powering outlet 3 brings up the dLive MixRack (control interface
192.168.30.101, Dante card192.168.10.103) without the amps — the amps are on the contact closures, so the console DSP comes up silent. The M21 relay (.26) contacts 9–12 are the main amplifiers. Normal shutdown turns the surfaces off before the Mix Rack, to give the amps time to discharge.
Key devices on 192.168.30.0/24
| Address | Device |
|---|---|
192.168.30.200 |
docker-server (monitoring / automation hub) |
192.168.30.180 |
Lighting PC (runs grandMA3 onPC) |
192.168.30.15 / .16 / .19 |
RackLink PDUs — rack room / wireless-cam / control room |
192.168.30.23 |
RackLink PDU RLNK-DS — server-room signage rack (DS PCs + SVSI cage) |
192.168.30.17 / .18 |
Stage cameras 2 / 1 |
192.168.30.119 / .120 |
LG multiview TVs — switcher / shader (video control room) |
192.168.30.201 / .203 / .204 / .205 / .207 |
AV switches (Control VLAN) |
A live sweep also shows ~15 dynamic hosts (touch panels, AV PCs) — many sit behind the unmanaged “dumb” switches and aren’t individually catalogued. See the network map. Changes are logged in the Control changelog.