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Wheelock SA-70 Скачать руководство пользователя страница 9

P81416 T

Sheet 9 of 10

Table 4:

Number of Speaker Amplifiers per Audio Pair*

Wire Run

(Ft.)

Number of Speaker

Amplifiers

22 AWG 24 AWG

100 150  120
200 150  120
400 100  60
800 50  30

1600 25

15

* Based upon using Wheelock's PRM-150
Preamplifier

Table 5:

Number of Speaker Amplifiers per Power Pair

Wire Run

(Ft.)

Number of Speaker

Amplifiers

22 AWG 24 AWG

100 *33 *20
200 *20 *13
400

10

6

800

5

3

1600

2

1

* Maximum of 12 Speaker Amplifiers

when using Wheelock RPS-2406 600
mA Power Supply.

Although speaker amplifiers may be powered form a 24VDC unfiltered "B" battery, Wheelock's RPS-2406 Power Supply ("A"
battery) is recommended.

Connect the audio lines to the terminals designated as T and R. Connect the 24VDC power lines to the terminals designated as GND
and -24VDC.

TROUBLESHOOTING CHART:

Problem

Possible Cause and Correction

No sound

1) Is the volume control turned up (clockwise).
2) Check presence and polarity of -24VDC and GND at the speaker.
3) Check audio level on T and R at speaker, and if necessary also at

the audio source.

Low volume

1) Check that volume control is turned up.
2) Check for the sufficient audio level on T & R at the speaker.
3) Be sure at least -18VDC is present at the speaker during

operation.

Loud squeal

(Feed back)

1) Lower volume setting of speaker.
2) Move the phone farther from the speaker.
3) Install confidencer in phone if necessary.

ANY MATERIAL EXTRAPOLATED FROM THIS DOCUMENT OR FROM WHEELOCK MANUALS OR OTHER
DOCUMENTS DESCRIBING THE PRODUCT FOR USE IN PROMOTIONAL OR ADVERTISING CLAIMS, OR FOR
ANY OTHER USE, INCLUDING DESCRIPTION OF THE PRODUCT'S APPLICATION, OPERATION, INSTALLATION

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Содержание SA-70

Страница 1: ...equired however where prior written notice is not possible the telephone company may temporarily discontinue service without notice if such action is necessary under the circumstances The telephone company may make changes in its communication facilities equipment and operations procedures where such action is reasonably required in the operation of its business and is not inconsistent with the ru...

Страница 2: ...elock Zone Control is required as an interface for Zoned Paging Systems For Single Zone Paging a Wheelock PRM 150 Preamplifier with an RPS 2406 Power Supply is required as an interface Figure 3 shows a speaker amplifier connected to a tone generator for telephone alerting or night ringing with paging Figure 3 Figure 4 shows the same tone generator and speaker amplifier activated by a common audibl...

Страница 3: ...ne or more audio page ports Figure 7 A 8 OHM Amplified 1 3 Watts page port Maximum capacity is 125 speaker amplifiers B 600 OHM low power page port Maximum capacity is 10 speaker amplifiers See System Capacity below If a PRM 150 preamplifier is used then maximum capacity is 150 speaker amplifiers SYSTEM CAPACITY ...

Страница 4: ... 90 SA B4 SA C8 A On Axis 1W 1KHz 1M 95 98 4FT 93 96 10FT 85 88 Amplifier Signal Input Impedance 600 Ohms Signal Input Level 15 dBM 0 1Vrms to 10 dBM 2 4Vrms Nominal Power Input Voltage 24VDC 18VDC minimum 28VDC maximum Nominal Input Current 45 mA 24VDC Maximum Input Current 170 mA 24VDC Power Output Rating 1 0 Watt Terminals 4 Screw Terminal Clamps INSTALLATION INFORMATION A SA C8 A SA 70 and SA ...

Страница 5: ...reasing volume results in the speaker being louder in its covered area but does not increase the area covered by the speaker The design goal of speaker placement is to allow people to hear just about the same volume from anywhere in the room The goal is accomplished with a symmetrical layout of the ceiling speakers which achieves edge to edge area coverage as shown in Figure 9 Figure 9 Typical Cei...

Страница 6: ...all Whenever possible wall mounted speakers should be aimed in the same direction when required to project further than 30 or 35 feet Pillars or posts are often available to facilitate this type of installation Although the pillar locations will vary Figure 11 provides a useful guide Note that a stagger pattern should be maintained Figure 11 Wall Speaker Layout Speakers Mounted On One Wall And Pil...

Страница 7: ... the surface of a wall Remove the top cover by pushing the latch at the bottom of the housing base with a small screwdriver see Figure 14 Disconnect the speaker wires by unplugging them from the P C Board pins P1 red and P2 black Figure 15 is the mounting template Simply locate the template at the desired location and mount the base to the wall with the screws provided Connect wires as specified i...

Страница 8: ...4 square 1 1 2 deep extension ring see Figure 19 The SA C8 A is designed to mount flush in the ceiling A speaker support bracket Wheelock s Model Number SSB 8 and a backbox Wheelock s model number CBB 8 are available See Figure 18 Figure 17 Figure 18 Figure 19 WIRING INFORMATION Use D type station wire 24 AWG or other suitable wire Table 4 is a guide for the number of speaker amplifiers per audio ...

Страница 9: ...ower lines to the terminals designated as GND and 24VDC TROUBLESHOOTING CHART Problem Possible Cause and Correction No sound 1 Is the volume control turned up clockwise 2 Check presence and polarity of 24VDC and GND at the speaker 3 Check audio level on T and R at speaker and if necessary also at the audio source Low volume 1 Check that volume control is turned up 2 Check for the sufficient audio ...

Страница 10: ...URPOSES OR WHETHER IT WILL ACHIEVE THE USER S INTENDED RESULTS THERE IS NO WARRANTY AGAINST DAMAGE RESULTING FROM MISAPPLICATION IMPROPER SPECIFICATION ABUSE ACCIDENT OR OTHER OPERATING CONDITIONS BEYOND WHEELOCK S CONTROL SOME WHEELOCK PRODUCTS CONTAIN SOFTWARE WITH RESPECT TO THOSE PRODUCTS WHEELOCK DOES NOT WARRANTY THAT THE OPERATION OF THE SOFTWARE WILL BE UNINTERRUPTED OR ERROR FREE OR THAT ...

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