Toshiba Strata Dk14, Dk40i, Dk424 Installation And Maintenance Manual

Peripheral Installation
External Speaker Unit (HESB) Options
Strata DK I&M    5/9910-19
Peripheral Installation
External Speaker Unit (HESB) Options
Strata DK systems provide three options utilizing an HESB:
©Loud Ringing Bell
©Amplified Speaker
©Talkback Amplified Speaker
System hardware requirements vary depending on the HESB option selected. See the following 
installation procedures for the hardware requirements for each option.
Loud Ringing Bell Option
The loud ringing bell option enables the voice...

Peripheral Installation
External Speaker Unit (HESB) Options
10-20Strata DK I&M    5/99
Important!See Chapter 9 – Station Apparatus for instructions to cut EXSP and HHEU jumpers 
on the electronic telephone main PCB.
Figure 10-11 HESB/Digital Telephone with Loud Ringing Bell Wiring
(-)
+
(+)
(-)
(L2)
(+)
1000 or 2000 Series
Digital Telephone
4302
25-Pair
CableJacketed
Twisted Pair
24 AWG HACU-120
115VAC to
12 VDC 115 VAC
Tip
Ring
PT
PRStation Cabling MDF
66 BlockPower
Supply
P601
HHEU 
(V.3 or .4)...

Peripheral Installation
External Speaker Unit (HESB) Options
Strata DK I&M    5/9910-21
Peripheral Installation
Installing the HESB Loud Ringing Bell in Electronic Telephones (DK40i and DK424 Only)
1. On the HESB TB1 terminal block: connect a jumper between terminals 6 and 7, and connect 
another jumper between terminals 5 and 8 (see Figure 10-12).
2. On the HESB TB2 terminal block, connect a jumper between terminals 4 and 5.
3.Install an HHEU PCB and HESC-65A (or HESC-65A) cable in the telephone per...

Peripheral Installation
External Speaker Unit (HESB) Options
10-22Strata DK I&M    5/99
Important!See Chapter 9 – Station Apparatus for instructions to cut EXSP and HHEU jumpers 
on the electronic telephone main PCB.
Figure 10-12  HESB/Electronic Telephone with Loud Ringing Bell Wiring
Amplified Speaker Option
The amplified speaker option enables the HESB to be configured as a paging speaker. The HESB 
is connected to the PIOU, PIOUS, or PEPU 600-ohm page output to provide an amplified external...

Peripheral Installation
External Speaker Unit (HESB) Options
Strata DK I&M    5/9910-23
Peripheral Installation
3. Connect a jumper between terminals 5 and 8 of the HESB TB1 terminal block.
4. Connect a jumper between terminals 3 and 4 of the HESB TB2 terminal block.
5. Connect a jumper between terminals 5 and 6 of the HESB TB2 terminal block. 
6. If using a PIOU or PEPU, connect the PIOU or PEPU 600-ohm page output (pins 13 and 38) 
to terminals 3 and 4 of the HESB TB1 terminal block.
...or
Connect the...

Peripheral Installation
External Speaker Unit (HESB) Options
10-24Strata DK I&M    5/99
Talkback Amplified Speaker Option
The talkback amplified speaker option enables a talkback speaker to be provided in areas where a 
telephone is not needed. In this configuration, the HESB is connected to the PIOU, PIOUS, or 
PEPU 600 ohm (duplex) output and is used as the amplifier and speaker. 
A door phone unit (MDFB) is connected to the HESB, and serves as a microphone to provide 
talkback operation. (The MDFB...

Peripheral Installation
External Speaker Unit (HESB) Options
Strata DK I&M    5/9910-25
Peripheral Installation
Figure 10-14 HESB/Talkback Amplified Speaker Wiring
MDF
DK14 & DK40i KSU 
BGM
RCA JackMDF
123456
12V 0V
HESB (Rear View)
115VAC ± 10VAC to 12VDC
Door Phone Internal Wiring:
TBI
4
3
TBI
7
8
9
10Voice
4
3
4
3
2
5
HACU-120 Notes 
• The 600 ohm duplex page output is 
compatible with most 
commercially available talkback 
amplifiers. – MDFB not required.
• Only one interface PCB (PIOU, 
PIOUS, or...

Peripheral Installation
External Page Options
10-26Strata DK I&M    5/99
HESB Wall Mounting
Some applications may require that the HESB is mounted on a wall or other vertical surface. 
ä
To wall mount the HESB
1. Find a suitable location on the mounting 
surface for the HESB (see Figure 10-15).
2. Screw a 1.25-inch panhead wood screw 
into the mounting surface.
3. Hang the HESB from the screw.
External Page Options
Strata DK systems equipped with a PIOU, PIOUS, or PEPU PCB offer a variety of external...

Peripheral Installation
External Page Options
Strata DK I&M    5/9910-27
Peripheral Installation
Figure 10-16 DK424 Page and BGM Using the Same Amplifier (PIOU/PIOUS/PEPU)
1517
External Page/
Door Lock Relay
(See Program 77-1) Night Ring
and Page
from KSU 
Backplane600W
DET (32)SPT (38)
2625
13
Input 1
Output
External
Paging Amp
M
14
BGM
Music
Source Mute 2
Input 2 B
P10 PIOU/PEPU
PIOU/PEPU Pin
Numbers
25-Pair CableSPR (13)
DER (7)66 Block
Pin Numbers
MDF
External Page/
Door Lock Relay
(See Program 77-1)...

Peripheral Installation
External Page Options
10-28Strata DK I&M    5/99
Zone Paging with BGM (Separate Amplifiers)
Provides multiple-zone paging capability. The output of the paging amplifier is routed back to the 
PIOU, where it is switched to one of four sets of speakers by PIOU Relays K1 through K4. The 
relay selected is determined by the access code dialed by the station user. Default access codes are:
NoteMulti-zone page output rating is 30W/maximum at 300 ohms. Zones 5~8 (LCD display 
E~F) for a...