Architecture RTP multi-radio vs ancien VHF Comm Panel hard-wired — redondance Capt/F/O.Multi-radio RTP architecture vs legacy hard-wired VHF Comm Panel — Capt/F/O redundancy.
ObjectifObjective
Comprendre pourquoi un RTP fail n’enlève aucune radio, et comment un VHF Comm Panel legacy le faisait.Understand why one RTP fail removes no radio, and how a legacy VHF Comm Panel did.
SCHÉMA — Capt + F/O → toutes radiosSCHEMATIC — Capt + F/O → all radios
Dual RTP partagent le bus E&E vers VHF 1/2/3 et HF 1/2. Soit pilote peut tuner n’importe quelle radio.Dual RTPs share the E&E bus to VHF 1/2/3 and HF 1/2. Either pilot can tune any radio.
LEGACY VHF COMM PANEL
Hard-wired à son transceiver E&E → fail panel = cette VHF indisponible.Hard-wired to its E&E transceiver → panel fail = that VHF unavailable.
Labels : TFR · ACTIVE/STANDBY · FREQ SEL · COMM TEST. Transceiver dans E&E.Labels: TFR · ACTIVE/STANDBY · FREQ SEL · COMM TEST. Transceiver in E&E.
ArchitectureArchitecture
Effet d’un fail panelEffect of panel fail
VHF Comm Panel (legacy)
Cette VHF perdueThat VHF lost
RTP (NG typical)
Aucune radio perdue — autre RTP retient toutNo radio lost — other RTP retains all
FREEZE · SQUELCH · HF
Anomalie logiciel VHF-3 / ACARS MU peut geler le RTP → pull CB P18-2D (VHF-3) + P6-1E (ACARS) ; cycle TFR & VHF-3 select.VHF-3 / ACARS MU software anomaly can freeze RTP → pull CB P18-2D (VHF-3) + P6-1E (ACARS); cycle TFR & VHF-3 select.
TEST = squelch ; TEST + OFF verrouille squelch (ATIS distant).TEST = squelch; TEST + OFF locks squelch (distant ATIS).
HF SEN réglable seulement depuis le RTP on-side. AM bascule HF AM ↔ USB.HF SEN adjustable only from the on-side RTP. AM toggles HF AM ↔ USB.
CONTRASTE PÉDAGOGIQUETEACHING CONTRAST
Dedicated VHF panel = single-point fail pour cette radio — panneau mort = transceiver inaccessible depuis ce siège.Dedicated VHF panel = single-point fail for that radio — dead panel = transceiver unreachable from that seat.
RTP = full redundancy across panels — Capt peut retuner VHF-2/3/HF même si RTP F/O est mort.RTP = full redundancy across panels — Capt can retune VHF-2/3/HF even if F/O RTP is dead.
Isoler un RTP erratique : tuner des fréquences différentes sur chaque panneau VHF ; essayer VHF-2, VHF-3, HF.Isolate an erratic RTP: tune different freqs on each VHF panel; try VHF-2, VHF-3, HF.
Fail panel legacy vs RTP.Legacy panel fail vs RTP.