INSTALLATIONS
2-21
TB21 (CQD-2416)
No. Name Description
Connection
point
33 DMC_OAL Others reception alarm signal output (NCH-321A is not used)
34 DMC_OAS
Others reception alarm stop signal input (NCH-321A is not used)
35 DMC_SEL Device selection/distress message transmit stop signal input
36 DMC_DRQ Distress alert request signal input
37 GND Ground
38 DMC_PWR Common power supply output (+10V, max. 100 mA)
39 DMC_RDY Device selection ready signal output
40 DMC_DRA Distress-alert-request ACK signal output
41 DMC_DAL Distress message reception alarm signal output
42 DMC_DAS
Distress reception alarm stop signal input (NCH-321A is not used)
43 GND Ground for shielded connections
NCH-321A
Distress
message
controller
etc.
TB22 (CQD-2416)
No. Name Description
Connection
point
44 RMS_TX-A
45 RMS_TX-B
IEC61162-1 compliant, 4800 bps, transmitting only
Output for remote maintenance system
46 GND Ground for shielded connections
RMS
47 AME_TX-A
48 AME_TX-B
IEC61162-1 compliant, 4800 bps, transmitting only
49 AME_RX-A
50 AME_RX-B
IEC61162-1 compliant, 4800 bps, receiving only
51 GND Ground for shielded connections
AME
52 422_RX-A
53 422_RX-B
IEC61162-1 compliant, 4800 bps, receiving only
54 NC Ground for shielded connections
Not used
TB23 (CQD-2416)
No. Name Description
Connection
point
55 LINE_OUT+
56 LINE_OUT-
Receiving signal output (600 equalized, 0 dBm)
57 LINE_IN+
58 LINE_IN-
Transmitting signal input (600 equalized, 0 dBm)
59 GND Ground for shielded connections
Selcall or other
external device
60 EXT_KEY External transmission request signal (Transmit=L)
External device
61 SEL_BK Selcall transmission request signal (Transmit=L)
62 GND Ground for shielded connections
Selcall device
63 R_CONT+
64 R_CONT-
Inmarsat-C power on permission signal on a battery operation
* Set either Dual or Single on menu F1.2.4.2 BATT use set.
65 GND Ground for shielded connections
Inmarsat-C