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INSTALLATION-PERIPHERALS
SECTION 100-816-207
MARCH 1993
7-4
FIGURE 7-2
DK16 BGM SOURCE/STANDARD TELEPHONE CIRCUIT PRECAUTION DIAGRAM
1) For DK16, enter the programming mode and
identify the BGM slot number in Program 19 of
the printed circuit board (KSTU, PSTU, PEKU,
and PESU) which the BGM source will be
connected to.
2) Connect the BGM source to the tip and ring of
the appropriate circuit of the BGM PCB: KSTU
or PSTU (circuit 4), PEKU (circuit 3), and
PESU (circuit 8). In Program 10-2, use LED 09
or 10 to specify the circuit number PEKU or
PESU. KSTU or PSTU does not require Pro-
gram 10-2 assignment.
2A) For DK8, enter the programming mode and
set LED 10 to on in Program 10-2. This
assigns QSTU circuit 2, Port 19 as the BGM
source for the system. You must cycle system
power for Program 10-2 to take effect.
3) If BGM is connected to PEKU or PESU, cut
W5 on the PEKU or W7 on the PESU PCB
that BGM is connected to.
4) Using the BGM source’s volume control,
adjust the BGM volume to the desired level
while listening to BGM via an digital or
electronic telephone speaker and/or the ex-
ternal page speakers. When BGM is sent to
external speakers via the 600 ohm RCA jack
PCB, use the external amplifier volume con-
trol to balance the BGM and page volume
levels.
2.24 External Background Music Installation.
The external background music options are
closely associated with the external paging op-
tions. Refer to Paragraph 5 for external paging
amplifier installation.
3 RELAY CONTROL OPTIONS
3.00 General
3.01 The DK8 KSU and DK16 Base Unit provides
one relay, and the PIOU and PIOUS each provides
two relays that control peripheral options.
HIGH LEVEL
OUTPUT
KSTU OR PSTU
CIRCUIT 4
OR
QSTU,
CIRCUIT 2
(PORT 19)
PHONE LINE
TIP
RING
UNIVERSITY SOUND
MODEL TM-2
TELEPHONE ADAPTOR
(OR EQUIVALENT)
INPUT
BGM MUSIC
SOURCE
600Ω OUTPUT
OR 8Ω OUTPUT
1
SEE PROGRAM 19 FOR SLOT KSTU OR PSTU ASSIGNMENT
SEE PROGRAM 10-2, LED 10 FOR QSTU, PORT 19 ASSIGNMENT
NOTE:
1. UNIVERSITY SOUND
1327 Ralston Avenue
Sylmar, Ca. 91342-7607
Phone: (818) 362-9516
RCA JACK
*
*
BGM SOURCE SPECIFICATIONS:
• INPUT IMPEDANCE: 600Ω
• INPUT VOLTAGE:
RECOMMENDED LEVELS,
MIN. = 0.14 VRMS (–15 dBm)
MAX. = 0.77 VRMS (0 dBm)