17
CONNECTING A COM RADIO
PTT SERIALLY CONNECTED W/MIC+ EARTH-REF. OUTPUT STAGE
1.
2. M-/HT-
3. Jumpered to 6
4. PTT button
5.
6. Jumpered to 3
7. PTT button
8. M+
9. HT+
PTT SERIALLY CONNECTED W/MIC+ BRIDGE CONNECTED OUTPUT STAGE
1.
2. M-
3. Jumpered to 6
4. PTT button
5. HT-
6. Jumpered to 3
7. PTT button
8. M+
9. HT+
SEPARATE PTT CONNECTION TO M-EARTH-REF. OUTPUT STAGE
1.
2. Jumpered to 3/M-
3. Jumpered to 2/(HT-)
4. PTT button
5.
6. M+
7. PTT button
8. PTT radio
9. HT+
SEPARATE PTT CONNECTION TO M-BRIDGE CONNECTED OUTPUT STAGE
1.
2. Jumpered to 3/M-
3. Jumpered to 2
4. PTT button
5. HT-
6. M+
7. PTT button
8. PTT radio
9. HT+
18
CONNECTING A TELEPHONE
Telephone with earth-referenced output stage
When 4 and 8 are connected, the intercom switches between Stage and Road.
Must not be permanently connected.
1.
2. M-/HT-
3.
4. Stage/Road switch
5.
6. M+
7.
8. Stage/Road switch
9. HT+
Telephone with bridge-connected output stage
When 4 and 8 are connected, the intercom switches between Stage and Road.
Must not be permanently connected.
1.
2. M-
3.
4. Stage/Road switch
5. HT-
6. M+
7.
8. Stage/Road switch
9. HT+