This is a safety feature. If you are unable to insert the plug into the outlet, contact your electrician to replace your obsolete outlet. Do not defeat the safety purpose of the grounding-type lug. Bosch Security Systems | 2003-09 | 3922 988 99482en...
Do not open the unit when it is connected to the mains. The unit contains non-insulated parts, which can cause electric shock. Caution There are no user-serviceable parts inside the unit. Service must be done by qualified personnel. Bosch Security Systems | 2003-09 | 3922 988 99482en...
This master signal is available on the XLR and DIN output (mic. level). Additional outputs are the tape out and cascade out. All pre-amplifier channels and the master output can be monitored with a headphone. Bosch Security Systems | 2003-09 | 3922 988 99482en...
15 Mains voltage 115/ 230 V switch 7 24 V DC backup power input (terminal 16 Mains socket 8 24 V DC output (terminal) 17 Mains fuse 9 XLR for direct output, channel 1 to 4 Bosch Security Systems | 2003-09 | 3922 988 99482en...
Each channel has a speech filter that can be enabled or disabled with the corresponding jumper (JP101, JP103, JP105, and JP107). The speech filter improves speech intelligibility by cutting off the lower frequencies. Bosch Security Systems | 2003-09 | 3922 988 99482en...
Jumper JP301 Switch Insertion Cascade CASC Emergency CASC Note If you use the emergency option, the emergency volume can be set with VR301. This volume is not affected by the master volume. Bosch Security Systems | 2003-09 | 3922 988 99482en...
• use the mounting brackets delivered with the unit. • remove the 4 feet from the bottom of the unit. (Without the feet the unit is 2U high). Bosch Security Systems | 2003-09 | 3922 988 99482en...
You can earth the unit to increase the electrical stability of the system. The unit is protected against reversal of the battery polarity. Caution The connection cable must have an in-line fuse. Use the type of fuse as mentioned in the illustration. Bosch Security Systems | 2003-09 | 3922 988 99482en...
Note If you want to use the priority feature, you must use a microphone or line-level source with a priority contact on pin 4 and 5 of the 5-pole DIN plug. Bosch Security Systems | 2003-09 | 3922 988 99482en...
The Master Mic output (DIN) has a priority relay contact on pin 4 and 5. This relay is activated when a priority contact of one of the inputs is closed. Bosch Security Systems | 2003-09 | 3922 988 99482en...
The emergency input has a 24 V relay output (screw terminal), which is activated on the VOX of the input. An additional 24 Vdc output (screw terminal) is available to power external relays. Bosch Security Systems | 2003-09 | 3922 988 99482en...
The line monitoring can be used to listen to a single channel or the master channel. To do so connect a headphone at the front of the pre-amplifier. Use the 'Select' switch to select a channel. Note The VU-meter always shows the volume for the selected channel. Bosch Security Systems | 2003-09 | 3922 988 99482en...
Line inputs 1-4 (Cinch, unbalanced, stereo converted to mono) Sensitivity 200 mV Impedance 22 kOhm S/N (flat at max volume) >70 dB S/N (flat at min volume/muted) >75 dB Headroom >25 dB Bosch Security Systems | 2003-09 | 3922 988 99482en...
<95 % 6.8 General EMC emission acc. to EN 55103-1 EMC immunity acc. to EN 55103-2 Dimensions 100 x 430 x 270 mm (19" wide, 2U high) Weight approx. 5 kg Bosch Security Systems | 2003-09 | 3922 988 99482en...