Lectrosonics MTCR, Instruction Manual

Portable Digital Recorder

Rio Rancho, NM

3

Battery Installation

The audio recorder is powered by a single AAA Lithium 

battery for 6 hours of operation.
Zinc-carbon batteries marked “heavy-duty” or “long-

lasting” are not adequate.

NOTE: Although alkaline batteries will work in 

the MTCR, we strongly recommend that they 

be used only for short-term testing. For any 

actual production use, we recommend the use of 

disposable lithium AAA batteries.

Push inward on the release tabs to open the door.

Battery 

polarity 

markings

Press tabs to 

open door

Insert the battery according to the markings inside the 

battery compartment door. The (+) pos. end of the bat-

tery is oriented as shown here.

CAUTION:  

Danger of explosion if battery is  

incorrectly replaced.  

Replace only with the same or equivalent type.

Compatibility with 

microSDHC memory cards

Please note that the MTCR and SPDR are designed 

for use with the 

microSDHC memory cards

. There are 

several types of SD card standards (as of this writing) 

based on capacity (storage in GB).

SDSC

: standard capacity, up to and including 2 GB – 

DO NOT USE!

SDHC

: high capacity, more than 2 GB and up to and 

including 32 GB – 

USE THIS TYPE

.

SDXC

: extended capacity, more than 32 GB and up to 

and including 2 TB – 

DO NOT USE!

SDUC

: extended capacity, more than 2TB and up to 

and including 128 TB – 

DO NOT USE!

The larger XC and UC cards use a different formatting 

method and bus structure and are NOT compatible 

with the MTCR recorder. These are typically used with 

later generation video systems and cameras for image 

applications (video and high resolution, high speed 

photography). 
ONLY microSDHC memory cards should be used. They 

are available in capacities from 4GB to 32GB. Look for 

the Speed Class 10 cards (as indicated by a C wrapped 

around the number 10), or the UHS Speed Class I 

cards (as indicated by the numeral 1 inside a U sym-

bol). Also note the 

microSDHC

 Logo.

If you are switching to a new brand or source of card, 

we always suggest testing first before using the card on 

a critical application.
The following markings will appear on compatible 

memory cards. One or all of the markings will appear on 

the card housing and the packaging.

UHS Speed Class I

Stand-alone

Speed Class 10

UHS Speed Class 1

UHS Speed Class I

Accompanying 

microSDHC logo

microSDHC Logo is a trademark of SD-3C, LLC