Lectrosonics T187 - Manual (Page 7)

VHF Hand-held Transmitter
BATTERY INSTALLATION
The T187 transmitter is powered by a standard alkaline 9 Volt battery. It is important that you use ONLY an ALKA­
LINE battery for reliable operation. Alkaline batteries will provide about 15 hours of operation and the battery status
lamp will function normally. Standard zinc-carbon batteries marked “heavy duty” or “long-lasting” are not adequate.
They will provide only about 4 hours of operation. Similarly, nicad rechargeable batteries only provide about 4 hours
of operation, and will run down quite abruptly.
The battery compartment is located in the lower section of the transmitter, between two printed circuit boards. To
install a fresh battery, follow the steps illustrated below. Look inside the battery compartment when the cover is off
and take note of the two differently sized holes in the battery contact pad. Insert the battery so that the large hole in
the battery contact pad will line up with the large contact on the battery when it is installed. The spring-loaded
plunger in the bottom of the compartment (opposite the contact pad) secures the battery in place.
The battery status is indicated by an LED on the bottom panel. The LED will glow brightly when the battery is good
and will dim as the battery condition deteriorates. The LED is at full brightness with a new battery. After 12 to 15
hours of operation using an alkaline battery, the battery voltage will be about 7 Volts and the LED will be completely
out.
DO NOT FORCE DOOR!
EXTERNAL LED OFF
EXTERNAL SWITCHES BYPASS
Remove
Cover
P A
Pull ring
outward Rotate ring
1/8 turn
Step 1 Step 3
Step 2
Insert
Battery
+
–
P A
EXTERNAL LED OFF
EXTERNAL SWITCHES BYPASS
Step 4
Step 5
Rotate ring to
lock closed
Replace
cover
EXTERNAL LED OFF
EXTERNAL SWITCHES BYPASS
Ring will sit
flush in
closed position
Step 6
EXTERNAL LED OFF
EXTERNAL SWITCHES BYPASS
+
–
Alternate Method:
Depress the plunger with the corner
of the battery and slide the battery
into the compartment. Note that the
locking ring is in the closed position
for this procedure.
Rio Rancho, NM – USA 7