Clear-Com MS-702 - Manual (Page 8)

C l e a r - C o m ®
M S - 7 0 2 T w o - C h a n n e l M a i n S t a t i o n I n s t r u c t i o n M a n u a l
2 - 2
speaker when the announce button, talk buttons or program interrupt are
activated. This feature helps minimize feedback.
The MS-702 also incorporates a dual-channel program interrupt system (IFB).
When activated, one or more stations can interrupt the program audio to either
another intercom station or a talent wearing Clear-Com’s wired or wireless
talent receivers. Clear-Com’s stand-alone IFB system can also be connected
to this station.
The MS-702 provides 30-volt DC power to operate Clear-Com beltpacks and
remote stations. This power is distributed between the two channels, and will
support up to 60 headset stations or 20 speaker stations. Clear-Com’s fail-safe
design automatically shuts down the power to a channel when a short circuit
or electronic overload is sensed on that channel. The other channel will
continue to operate normally. Once the fault condition is removed, the
MS-702’s fail-safe circuit will restore power, even under full load conditions.
LED indicators signal a short or overload on either channel.
The DC power output details are:
• 1.2A continuous output
• 2A peak output (not exceeding the 1.2A rating for more than 2
seconds per 30 second period)
• 1.75A max on any channel, with electronic current limiter (not
exceeding the 1.2A rating for more than 2 seconds per 30 second
period)
The MS-702 will operate from any AC line voltage between 90 and 240 volts
AC at 50 or 60 Hz. The MS-702 installs in a standard 19-inch (48.26 cm)
equipment rack, using only one rack space. The steel chassis and extra-thick
front panel with integral rack ears maintains legendary Clear-Com
ruggedness. Three 3-pin XLR connectors are provided for connection to each
intercom channel.
The MS-702 is compatible with all Clear-Com party-line intercoms.
OPERATION
Normal operation of the MS-702 main station requires access only to the front
panel controls. The controls located elsewhere on the unit are intended to be
set-and-forget in nature. For intercom operation, set the listen-level controls
for each channel to the desired level and press the talk buttons when talking. If
a headset is used, set the sidetone control for each channel for the desired
amount of sidetone in the earphone. If using the panel mic and speaker, set the
sidetone controls for minimum feed-through to the speaker to prevent
feedback.
FRONT PANEL
The controls, indicators, and connectors found on the MS-702 front panel are
shown in the following figure and are described the text that follows. The
numbers in the left column refer to Figure 1.