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Setting Up and Using Your UM1 System
The basic procedure for setting up and using your UM1 Wireless System takes only a few minutes:
1. For the UM1 system to work correctly, both the receiver and transmitter must be set to the
same channel. Remove all packing materials (save them in case of need for future service) and
check to make sure that the supplied UM1 receiver and CT7 or HT7 transmitter are set to the same
channel. If these channels do not match, contact your distributor or, if purchased in the United
States, Samson Technical Support at 1-800-372-6766.
2a. If you are using a 9-volt battery to power the UM1, press gently down on the battery door
release (on the front of the UM1, on the word "Open") and swing the door open in order to access
the battery compartment . Note that the door is hinged and is not intended to be removed
from the receiver case. Insert a 9-volt battery, being careful to observe the polarity markings.
Warning: Reversing the battery polarity may cause permanent damage to your receiver.
Turn the power switch "On" and set the Meter switch to "BATTERY." The green "HIGH" meter LED
will light if the battery is sufficiently strong. Once you've verified battery strength, turn the power
switch "Off" again.
2b. If you are using the optional Samson AC300R adapter or your video camera's 12-volt power
supply to power the UM1, connect it to the UM1 DC input jack. On the front of the UM1, press
gently down on the battery door release (on the word "Open") and swing the door open note
that the door is hinged and is not intended to be removed from the receiver case). Make sure the
power switch is set to "Off."
3a. If your system contains a CT7 belt-pack transmitter, push in both sides of the battery cover
and pull back to open the battery door, which is hinged and not intended to be removed from the
transmitter case. Please use care when opening this door as undue force will destroy the hinge.
3b. If your system contains a HT7 handheld transmitter, unscrew the bottom section of the micro-
phone by turning it counterclockwise and then slide it off.
4. Place a fresh 9-volt alkaline battery in the transmitter battery holder, taking care to observe the
polarity markings. If you are using a CT7 belt-pack transmitter, gently replace the battery door by
swinging it up and pressing until it clicks. If you are using a HT7 handheld transmitter, replace the
bottom section of the microphone by sliding it on and then screwing it back on. Whichever trans-
mitter you are using, leave it off for the moment.
5. Next, make the physical cable connection between the output of your UM1 receiver and the
audio input of your video camera or audio amplifier or mixer, being careful to set the Audio
Output Level switch so that the signal is strong but not distorting. Normally, it should be set to
the "-30" position when connecting to a mic-level input and to the "-20" or "-10" position when
connecting to a line-level input. If required, both the balanced and unbalanced outputs can be
used simultaneously. Leave your amplifier (and/or mixer) off at this time.
6. Turn the power to the UM1 "On" and close the battery door.
7. Extend both "A" and "B" antennas from the UM1 and place both in a vertical position.
8. Turn on the power to the CT7 or H7 transmitter; the green "HIGH" Battery strength LED will light
if the battery is sufficiently strong. At this point, either the "A" or "B" orange LED on the front of the
UM1 will light (depending upon which antenna is receiving the stronger signal).
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