Power Requirements; Installation Checklist; Rear Panel Connectors; Dc Input Connector - JPS QMT-1B Installation And Operation Manual

QMT-1B Operations Manual

2.5.1 Power Requirements

The QMT-1B is designed to operate from a nominal +12V DC supply. The unit will meet all
of its specifications over a voltage range of +11 to +15 VDC and will be damaged by a DC
source that delivers a constant (non-transient) DC voltage above this range. The DC power
consumption is 500 mA maximum. The AC adapter provided with the unit meets these
specifications.
The QMT-1B is a microprocessor-controlled device. As with any such equipment, a very short
loss of power can cause operational problems and/or cause the unit to reset.
communications link will be inoperable during the reset period. JPS recommends the QMT-1B
and associated equipment be connected to an AC power source that utilizes an uninterruptible
power system (UPS). If the overall site does not have UPS capability, the QMT-1B should be
plugged into a smaller UPS, such as those used for personal computer systems

2.6 Installation Checklist

Determine QMT-1B network parameters
such as IP address, subnet mask, and
gateway address.
Provide suitable power for the device.
Make interconnections.
Configure QMT-1B parameters.
Adjust audio levels.

2.7 Rear Panel Connectors

The rear panel connectors are explained in the section below, starting at the left side of the
panel.

2.7.1 DC Input Connector

The QMT-1B operates on a nominal +12 VDC. The power is applied via the "Wall Cube" AC
adapter provided with the unit. The DC input is reverse polarity protected.

2.7.2 Audio Level Adjustment

The QMT-1B now uses internal "soft pots" for audio adjustment from a web browser. See
Section 3.2

2.7.3 Connection to Radio

The interface between the QMT-1B and associated radio is made via rear panel Audio/Control
connector (female DB-15). A mating male connector is included in the accessory kit; it breaks
out the DB-15 signals to screw terminals.
Table 2-1 Basic Installation Checklist
You must assign these values. If you are not sure
how to determine these values, see the network
administrator for your organization.
See Section 2.5.1 Power Requirements.
See Section 2.7.2 Audio Level Adjustment for
External Interconnect Information.
See Section 3 Configuration.
See Section 3.2 .
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