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General Description
Description, Installation, Operations, and Maintenance Manual
Federal Signal www.fedsig.com
The picture below shows the 100 V Amplifier Card 20000150.
Figure 18 Amplifier Card (20000150)
Table 21 Environmental and Physical for the Amplifier Card (20000150)
Operating Temperature
-10 to +55
°
C
Humidity
0-98% non-condensing
20000150 Dimensions (H x W x L)
65 mm x 410 mm x 169 mm
Weight
0.75 kg/1.65 lb
2.6.5 ISMT Card (P-ISMT-G)
The ISMT card (P-ISMT-G) provides Intelligent Speaker Monitoring and Tapping
functionality for the Amplifier Chassis when used with ISMT capable speakers. (See
Figure 19.) The ISMT card uses special communication commands sent over the speaker
lines to communicate with the ISMT capable speakers. Using this communication link,
each ISMT loudspeaker can be instructed to change its transformer tapping, recalibrate
itself, and return status information back to the ISMT card.
The ISMT card, when needed, is inserted into the Amplifier Signal Backplane in the fifth
white connector on the right side of the card. (See Figure 20.)
One ISMT card can monitor the speaker circuits connected to all four Amplifier cards in
the local Amplifier Chassis and the speaker circuits connected to other Amplifier cards in
other chassis when they are connected via the standby bus cable. See “5.3.10 Installing
the ISMT Card (Optional)” on page 73.
NOTE
: The service model for the ISMT card is K-P-ISMT-G.