Baldwin Boxall BT8 Operating Instructions Manual - page 6
- 6 -
Issue 9
BT8 TECHNICAL SPECIFICATION
LINE CONNECTIONS
RING
VOLTAGE
:
20-70V 17-25Hz
REN
VALUE
: 1.0
CLEARDOWN (By either of the following)
K
Break :
Interruption of line current
Voice Operated Switch
:
Absence of caller speaking
Dial Tone Detector
:
350-440Hz from telephone switch
DTMF
Tone
:
Sent from caller to terminate the call
Time Out
:
Recorded 55 secs, live 2.5 minutes
AUDIO CONNECTIONS
Zone
Select
Outputs
8
off
:
NPN open collector 40V @ 100mA max
Amplifier Access Output
1 off :
NPN open collector 40V @ 100mA max
Amplifier Busy Input
:
Opto coupled 12-30V 7mA max AC/DC
Mic
Output
Level
: 2.5mV
Mic Level Source Impedance
: 22ohms
Line
Output
Level
:
0dBM 775mV
Line Output Source Impedance
: 220
ohms
AC SUPPLY INPUT
:
220-240V 50/60 Hz
Fuse
Protection :
20 x 5mm 250mA(T)
AMPLIFIER CONNECTIONS
FUNCTION
BMS 25 CONNECTIONS
ZONE
1 . . . . . . . 1
ZONE
2 . . . . . . . 2
ZONE 3
NPN Open Collector O/P
.
.
.
3
ZONE 4
40V @ 100mA Max .
.
.
.
4
ZONE 5
To Zone Select Relays
.
.
.
5
ZONE
6 . . . . . . . 6
ZONE
7 . . . . . . . 7
ZONE
8 . . . . . . . 8
Mic
Output
Level
2.5mV
Floating
. . . . 16
Cable Screen - Connect to 0V
.
.
.
.
17
Mic
Output
Level
2.5mV
Floating
. . . . 18
0V
. . . . . . . . 19
Access Amplifier -
NPN Open Collector Output 40V @ 100mA Max.
. 21
Busy Input -
Opto-Coupled 12-30V 7mA Max AC/DC.
. . . 22
Busy Input -
Opto-Coupled 12-30V 7mA Max AC/DC.
. . . 23
Line
Output
Level
775mV
Floating
. . . . 24
Line
Output
Level
775mV
Floating
. . . . 25