AMERITECH AM8a, Инструкция по эксплуатации

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Meter Display (18-0037) AM8a Instruction Manual
February 10, 2000 0037-S06.L_
6-2
Vt-r dc = - 48.1
Vr-g ac = 0.5 60.0 Hz
The mode and units of measure are indicated to the far left. The actual measured value is then
displayed numerically as well as graphically. The DC graph's "0" point is in the center of the
graph. For a negative measurement, the graph lies to the left. For positive measurements, the
graph lies to the right. The
SCALE
should be set so the graph will obtain the best resolution
based on the anticipated measurements.
6.3 METER SELECTIONS AND CONNECTIONS
Sub-sections 6.4 through 6.11 describe the different meter selections. The possible selections
that can be used depend on the Trunk Type programmed in the
CONFIG'N
Setup menus which
also determines which Front Panel jacks are active.
Figure 6-1 shows the cables that can be used to make measurements. Usually the 48–0062
cable(s) is used for Analog Measurements, while the 48-0047 and 48-0048 cables are used for
PCM
Measurements. The Bantam or PL310 plug may be plugged into jacks on a monitoring
panel at a
DSX
.
NOTE:
A 48-0131 (bantam to bantam) or 48-0157 (bantam to miniclip) Monitor
Cable should be used for
RX
monitor connections to a
DSX
if the
DSX
monitor jacks are not provided with isolating resistors. These cables have
internal resistors and their external appearance is similar to those shown
in Figure 6-1, except for identifying label.
The 48-0047 cable(s) is also used to interconnect the AM8a with an AM5XT via the
TIMS
TX/2W
and
RX
jacks, for detailed measurements of circuit impairment.
TIMS
connections are
described and illustrated in a separate sub-section.
Figure 6-2 illustrates the measurements that can be taken when the clip leads are connected to
CO circuits if a 48-0062 cable is connected to the
LOOP
jack illustrated at the top of the
Figure. This figure is designed to provide a quick reference for the user connecting the clip
leads on the cable to the appropriate circuits of a line or trunk. Figure 6-3 similarly shows the
E & M/SS
Connections.