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VSP-V-2925A

Issue 3

1 947212

TALKBACK INTERCOM SYSTEM

V-2925A - ADD ON EXPANSION UNIT

FOR THE V-2924A

The basic V-2924A Talkback Intercom System provides 24 stations with one-way, two-way, group call and all call

pages. The V-2925A Expansion Unit is an add on unit for the V-2924A. Each V-2925A Expansion Unit will

expand the V-2924A by twenty-four (24) additional stations. Up to three (3) Expansion Units can be added to a

system for a total of 48, 72, or 96 zones of paging.

The V-2925A can ONLY be used with the V-2924A. If you have the V-2924 model, please contact Technical

Support for assistance.

WARNING: Disconnect main power before servicing.

Mounting

• Plug the Expansion Unit into the Control Unit. For the first Expansion Unit, insert the P1 connector from the

Expansion Unit into the P8 connector on the Control Unit (Refer to Figure 1 for location of connectors). (For

each additional Expansion Unit, insert P2 into P1 – Refer to Figure 1 of the Control Unit document).

• Close latches attached to the top and bottom of the Expansion Unit over the keepers on the top and bottom of

the Control Unit.

• Drill holes into backboard through mounting flanges on the Expansion Unit.

• Insert screws into holes and tighten screws firmly.

Connections

Each Expansion Unit requires (2) 66B type punchdown blocks. Mount these on the backboard near the associated

Expansion Unit. Make connections to the punchdown blocks as specified in Figure 2 – Punchdown Block

Connections.

Setting Option Switches

All options programmed for the Control Unit are available on the additional stations provided by the Expansion

Units. The only switches on the Expansion Unit requiring attention are those for Background Music. Refer to

Figure 1 for location and Table 1 for the default values of these switches. Make changes as desired for the various

zones.

Dimensions/Weight

• 17.5”H x 8.37”W x 3.06”D

(44.45cm H x 21.26cm W x 7.77cm D)

• 11 lbs. (5.0 kg)

Operation

Same as Control Unit.

V-2924A with V-2925A Expansion Unit.

Summary of content (6 pages)

PAGE 1
VSP-V-2925A Issue 3 TALKBACK INTERCOM SYSTEM V-2925A - ADD ON EXPANSION UNIT FOR THE V-2924A The basic V-2924A Talkback Intercom System provides 24 stations with one-way, two-way, group call and all call pages. The V-2925A Expansion Unit is an add on unit for the V-2924A. Each V-2925A Expansion Unit will expand the V-2924A by twenty-four (24) additional stations. Up to three (3) Expansion Units can be added to a system for a total of 48, 72, or 96 zones of paging.
PAGE 2
FIGURE 1 - V-2925A CONTROL AND CONNECTOR LOCATIONS Side View Top View P4 P1 P1 P2 SW1 P3 Power LED AC Connectors: Power P1 - Connects to the V-2924A Control Unit P2 - Connects to an additional V-2925A Expansion Unit P3 - Switch Inputs P4 - Speaker Outputs 2 115/230 Switch Fuse Battery Backup Connector Switches: SW1 - BGM Group Select Dip Switch (See Table) 947212
PAGE 3
FIGURE 2 - PUNCHDOWN BLOCK CONNECTIONS 26 1 27 2 28 3 29 4 30 5 31 6 32 7 33 8 34 9 35 10 36 11 37 12 38 13 39 14 40 15 41 16 42 17 43 18 44 19 45 20 46 21 47 22 48 23 49 24 50 25 Block P3 - Switch Inputs Expansion *Expansion Unit #1 Unit #2 W/BL INA25 INA49 BL/W INB25 INB49 W/O INA26 INA50 O/W INB26 INB50 W/GR INA27 INA51 INB51 INB27 GR/W INA52 INA28 W/BR INB52 INB28 BR/W INA53 INA29 W/S INB53 INB29 S/W R/BL INA30 INA54 BL/R INB30 INB54 R/O INA31 INA55 O/R INB31 INB55 R/G INA32 INA56 G/R INB32 INB56 R/BR
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Table 1 - Background Music Options Stations 1-6 7-12 13-18 19-24 25-30 31-36 37-42 43-48 49-54 55-60 61-66 67-72 73-78 79-84 85-90 91-96 Background Music Switch OFF Main Board SW1 SW1-1 No BGM group 1 SW1-2 No BGM group 2 SW1-3 No BGM group 3 SW1-4 No BGM group 4 Expansion Board 1: SW1-1 No BGM group 5 SW1-2 No BGM group 6 SW1-3 No BGM group 7 SW1-4 No BGM group 8 Expansion Board 2: SW1-1 No BGM group 9 SW1-2 No BGM group 10 SW1-3 No BGM group 11 SW1-4 No BGM group 12 Expansion Board 3: SW1-1 No BGM group
PAGE 5
Table 3 - Page Dial Codes: Groups Dial Code 1 Main Board 2 3 4 5 Expansion 1 6 7 8 9 Expansion 2 10 11 12 13 Expansion 3 14 15 16 #10 external all call #11 system all call #!2 #13 #14 #15 #16 #17 #60* #61 #62 #63 #64 #65 #66 #67 #68 #70 #71 #72 #73 #74 #75 #76 #77 #78 #79 #80 #81 #82 #83 #84 #85 Example: #60 + 72 + 74 + … + * • Serial Group Call - User may select any combination of group codes during dialing Group 10 (External All Call) is not a valid group selection when using these dial co
PAGE 6
Problem No system operation. TROUBLESHOOTING CHART Corrective Action • Verify AC voltage is present at the receptacle. • Check the fuse located on the bottom of the unit. If blown, replace with a 1 amp, 250 VAC fuse. • Verify that 25 pair cable connectors are completely plugged into circuit board connectors. • Refer to Figure 1 and verify all connections. • Refer to Figure 1 and adjust volume. • Refer to Figure 1 and adjust volume. No paging at speaker. Paging at speaker but no reply from speaker.