[Electrical characteristics]
Input
Open voltage: 3.3 V DC
Short-circuit current: Under 1 mA
Activation:No-voltage make contact (one-shot signal is shown below.)
Over 100 ms
Output
Circuit:Open collector (See below.)
Withstand voltage: 30 V DC
Control current: Under 10 mA
Control current
23. FUNCTION SWITCH OPERATION
23.1. VM Amplifier's Rear Panel-Mounted Function Switches Set the rear panel-mounted SETTINGS switch (p. 9, 10 No. 29) as shown below.
1 2 3 4 5 6 7 8 All switches No. 1 – 8 are factory-preset to the OFF position.
ON
SETTINGS
Switch No. | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
Function | Phantom Power*4 | Telephone Paging | Chime Selection | Input 3 | Input 2 | Input 1 |
OFF (Up position) | OFF | Chime ON | See the Chime | Mic | Mic | Mic |
ON (Down position) | ON | Chime OFF | Selection table | Line | Line | Line |
Chime Selection table
| Switch No. | Chime Tone |
| 3 | 4 | 5 |
| |
| OFF | OFF | OFF | 2-Tone Chime |
| OFF | OFF | ON | 2-Tone Chime (Fast Repeat) |
| OFF | ON | OFF | 4-Tone Chime (Up) *1 |
| OFF | ON | ON | Single-Tone Chime |
| ON | OFF | OFF | 4-Tone Chime (Up & Down) *2 |
| ON | OFF | ON | Gong |
| ON | ON | OFF | Pre-recorded Chime *3 |
| ON | ON | ON | OFF |
| | | | |
*1 An ascending 4-tone chime is sounded when the broadcast begins.
*2 An ascending 4-tone chime is sounded when the broadcast begins, and a descending 4-tone chime is sounded upon broadcast completion.
*3 The chime sound source must be pre-recorded into a CF (CompactFlash) card to be inserted into the optional EV-200 Voice Announcement Board. (See p. 36.)
*4 Simultaneously turns on or off the phantom power of Inputs 1 – 3. See p. 35 for the method to switch off the phantom power for the individual Inputs 1 to 3.
