Zaxcom ZMT270 User manual

1
USER MANUAL
Published October 2019
Firmware Version ZMT270
ZMT3-HH
Smart Audio

2
ZMT3 HM TRANSMITTER ......................................................................................................................... 4
HOME SCREEN ............................................................................................................................................ 6
MAIN MENU ................................................................................................................................................. 7
MICROPHONE GAIN SET ........................................................................................................................................................... 7
UHF TRANSMIT FREQUENCY SET ............................................................................................................................................... 7
TRANSMITTER LOCK PAGE ........................................................................................................................................................ 7
SUB MENUS ................................................................................................................................................. 8
MENU GROUPS .......................................................................................................................................................................... 8
ACCESSING AND NAVIGATING THE MENU GROUPS ..................................................................................................................... 8
ENTERING AND NAVIGATING A SUB MENU .................................................................................................................................. 8
EXITING THE EXTENDED MENU .................................................................................................................................................. 8
RECORD MENU ........................................................................................................................................... 9
SD CARD FORMAT ................................................................................................................................................................... 9
PLAYBACK CONTROL ................................................................................................................................................................ 9
TIME LEFT ON CARD ............................................................................................................................................................... 10
AUTOMATIC RECORD AFTER BOOT UP .................................................................................................................................... 10
RECORDING MODE SET ........................................................................................................................................................... 10
LOW BATTERY STOP SET ......................................................................................................................................................... 10
TRANSMIT MENU ..................................................................................................................................... 11
UHF TRANSMITTER POWER LEVEL SET ..................................................................................................................................... 11
UHF TRANSMIT MODULATION SET ......................................................................................................................................... 11
TRANSMITTER DISABLE -RECORD ONLY MODE ......................................................................................................................... 11
ZAXNET MENU ......................................................................................................................................... 12
ZAXNET MODE ...................................................................................................................................................................... 12
ZAXNET RECEIVE FREQUENCY SET .......................................................................................................................................... 12
ZAXNET TRANSMIT FREQUENCY SET ....................................................................................................................................... 12
LOW POWER ZAXNET ............................................................................................................................................................ 13
GROUP CODE SET .................................................................................................................................................................. 13
UNIT CODE SET ...................................................................................................................................................................... 13
ZAXNET VOTING ENABLE ....................................................................................................................................................... 13
ZAXNET RECEIVE BEFORE TRANSMIT TIME ............................................................................................................................... 14
RECORD BEEP SET ................................................................................................................................................................... 14
AUDIO MENU ............................................................................................................................................ 15
HIGH PASS FILTER ................................................................................................................................................................... 15
2K NOTCH FILTER .................................................................................................................................................................. 15
DYNAMICS .............................................................................................................................................................................. 16
TIME CODE MENU ................................................................................................................................... 17
TIME CODE FRAME RATE SET ................................................................................................................................................... 17
TC JAM MODE SELECT ............................................................................................................................................................ 17
MUTE TIME CODE TRANSMISSION UNTIL JAMMED .................................................................................................................... 17
AUTO FRAME RATE ENABLE ..................................................................................................................................................... 17

3
SETUP MENU ............................................................................................................................................. 18
LED COLOR ........................................................................................................................................................................... 18
LED RING MODE .................................................................................................................................................................... 18
KEY FUNCTION ....................................................................................................................................................................... 18
TEST TONE ............................................................................................................................................................................. 18
KEY LOCK ON BOOT UP ........................................................................................................................................................ 19
QRX /ERX FIRMWARE UPDATE ............................................................................................................................................. 20
OLED BRIGHTNESS ADJUST .................................................................................................................................................... 20
OLED DISPLAY DIM ................................................................................................................................................................ 20
INFORMATION PAGE ............................................................................................................................................................... 20
HIDE ENCRYPTION MENU ....................................................................................................................................................... 20
ENCRYPTION CODE SET .......................................................................................................................................................... 21
HIDE TRANSMITTER NAME MENU ............................................................................................................................................ 21
TRANSMITTER NAME SET ......................................................................................................................................................... 21
MEDIA .......................................................................................................................................................... 22
MEDIA CAPACITY .................................................................................................................................................................... 22
RECORDING FORMAT .............................................................................................................................................................. 22
FIRMWARE ................................................................................................................................................. 23
UPDATING THE ZMT3-HH FIRMWARE ..................................................................................................................................... 23
UPDATING ERX FIRMWARE WITH A ZMT3-HH TRANSMITTER .................................................................................................. 23
UPDATING QRX FIRMWARE WITH A ZMT3-HH TRANSMITTER ................................................................................................ 24
OPERATING FREQUENCIES .................................................................................................................. 25
ZAXNET -REMOTE CONTROL AND TIME CODE ...................................................................................................................... 25
UHF -AUDIO ......................................................................................................................................................................... 25
PRODUCT SUPPORT ............................................................................................................................... 26
SPECIFICATIONS ..................................................................................................................................... 27
ZAXCOM WARRANTY POLICY AND LIMITATIONS ...................................................................... 28

Zaxcom ZMT3-HH Transmitter
4
ZMT3 HM Transmitter
1. Microphone Capsule - The ZMT3-HH can use any Shure compatible microphone capsule.
2. LED Light Ring
3. OLED Display
XLR View - When looking at the OLED Display the INC
key will be on the top and the DEC key will be on the
bottom seperated by the MENU key.
4. Menu / Play Key
• Press it to access the next menu item.
• Press it with the rubber membrane key to playback a segment.
5. INC / Record Key
• Increases the parameters of a menu item.
• When in the home screen pressing INC with the rubber membrane key will put the transmitter into
record.
• Press it while in the home screen will display the group and unit code and ZaxNet status and frequency.
6. DEC / Stop Key
• Decreases the parameters of the menu items.
• When in the home screen pressing DEC with the rubber membrane key will stop the recording.
• Press it while in the home screen will display time code, user bits and frame rate as well as the time left
on the card
7. Card / Power Key
• Push and hold for 2 seconds to power on.
• Push and hold 3 seconds followed by a quick press of the MENU key to power off.
• Press 3 times quickly to access the sub menus.
• Press 3 times quickly to return to the home screen.
3
1
2
6
4
5
7

Zaxcom ZMT3-HH Transmitter
5
1. Micro SD Card Slot
Inserting a Micro SD card:
With the OLED screen of the transmitter facing you, turn the card so the finger contacts are facing you
and pointing down toward the slot. Insert the card into the slot and press it down until you hear a
slight click. To remove it, press the card in until you hear the same click again.
Please see the Media section of this manual for card recommendations.
2. Battery Compartment
The ZMT3-HH uses one 18650 Li-ion battery.
The negative side of the battery is inserted into the unit and the positive end will face out
Warning: Batteries can vary in diameter from different manufacturers. The thicker batteries my
not fully fit into the unit.
1
2

Zaxcom ZMT3-HH Home Screen
6
Home Screen
Frequency - This is the transmit frequency of the ZMT3-HH.
If the ZMT3-HH is being used in RECORD ONLY mode “NOTX” will be displayed.
Transport Status - Displays the current mode of the recording feature.
• STOP - Recording / Playback is stopped
• LREC - ZMT3-HH is recording in LOOP RECORD mode.
• REC - ZMT3-HH is recording in NON-LOOP RECORD mode.
• PLAY - ZMT3-HH is playing back a recorded audio file.
Time code - Displays the transmission time code of the unit.
Modulation Type - Displays the transmission modulation type.
Segment - Displays the number of recorded segments on the micro SD card. Please note that regardless of
the size of the card it is limited to 500 segments.
Battery - This displays the approximate percentage of remaining battery power.
Audio Meter - Displays the modulation of the inputted audio signal.
Gain - “G” Appears when the transmitter is receiving change of gain commands via ZaxNet.
ZaxNet Status Transport Power
Frequency Modulation Status Level
Battery Level Audio Meter Gain
Indicators at -20, -10, 0 dBFS
543.2 STOP
09:18:03:00 ZHD96 05
G

Zaxcom ZMT3-HH Main Menu
7
Main Menu
To cycle through the main menu press the MENU key.
Microphone Gain Set
The microphone gain is adjusted from this menu. To increase the gain press the INC key and to decrease the
gain press the DEC key.
This menu displays the gain setting in decibels and a meter indicating the audio signal. The meter is displayed
horizontally from left to right.
UHF Transmit Frequency Set
This menu is where the UHF transmit frequency is set. To adjust the frequency, press the INC and DEC keys.
• Short presses of the INC or DEC key causes the value to change by 0.1 MHz
• Holding the INC or DEC key causes the value to change by 0.5 MHz
Transmitter Lock Page
This page enables a key lock function, so no parameters can be changes. When the lock page is landed on
a countdown clock will begin. After 5 seconds the transmitter will lock and the display will indicated that
it is LOCKED. If this screen is exited before the 5 seconds are up the transmitter will not lock.
To lock the transmitter before the 5 seconds press and hold the DEC key.
Pressing the INC key when the transmitter is locked will display the group and unit code, its transmit
frequency and serial number.
Pressing the DEC key will display the units name, battery voltage and current record segment number.
To unlock the transmitter
• Press and hold the MENU key and press INC keys 5 times.
GAIN 20 dB
TXFREQ 543.2
Countdown clock starting at 5 seconds
After the transmitter locks
LOCKED 20 dB
09:18:05:02
23.98
IFB RX
LOCK 5

Zaxcom ZMT3-HH Menu Navigation
8
Sub Menus
Menu groups
The ZMT3-HH has six sub menu groups
• Record - Changes the parameters of the on-board recorder.
• Transmit - Changes the parameters of the UHF transmitter.
• ZaxNet - Changes the parameters of the ZaxNet transceiver.
• Audio - Changes the parameters of the transmitted and recorded audio.
• Time Code - Changes the time code parameters.
• Setup - Changes the parameters of the general operations.
Accessing and navigating the menu groups
From in the home screen press the CARD key three times, or hold the MENU key while booting up, to access
the six menu groups. Then pressing the INC or DEC key will cycle thru the menu items.
Entering and navigating a sub menu
After landing on the desired menu group press the MENU key to enter that menu.
To return to the top of the menu press the MENU key to cycle to the top or press and hold the MENU key for
1.5 seconds.
Exiting the extended menu
Press the CARD key 3 times, or press the MENU key to cycle through the sub menu items until HOME MENU
is displayed then press the MENU key.

Zaxcom ZMT3-HH Record Menu
9
RECORD MENU
SD Card Format
This menu will only appear if a card was inserted prior to booting up
The Micro SD card is erased and formatted from this menu. Please note that all cards need to be formatted in
the ZMT3-HH prior to recording.
Before formatting the card, the transmitter can optionally be named (see set up menu) with the talents name,
or any other unique identifier makes it easier to keep track of files from different recorders. When a
transmitter is named that name is included in file name.
The card name menu is located at the end of the set up menu.
The factory default name is the transmitter’s serial number.
Partial Format
If the card’s FAT32 file structure gets corrupt while doing a file transfer, and the card is no longer recognized by
the transmitter or by ZaxConvert, a partial format can be done. The partial format rewrites the FAT32 file
structure and leaves the recorded audio untouched. To do a partial format from this menu press the DEC key 9
times “PARTIAL FORMAT” will then be displayed.
Playback Control
Recorded files can be played back from this page.
The top line displays the current mode of the recorder: REC, PLAY or STOP followed by the time code.
The bottom line contains the current segment number time code frame rate and the audio level.
Playing back from the transport page:
• Pressing the INC key while stopped will play the segment number that is displayed.
• Pressing the DEC key while playing back will stop the playback.
• Pressing the DEC key while stopped will jump back.
• Holding the INC key will jump ahead one segment.
• Holding the DEC key will jump back one segment.
• Pressing the INC key while in play mode will cause the playback to jump ahead, repeated quick presses will
cause playback to advance in larger increments.
PRESS UP KEY 5X:
TO ERASE CARD
STOP 09:18:05:02
SEG 001 23.98

Zaxcom ZMT3-HH Record Menu
10
Time Left on Card
This menu will only appear if a card was inserted prior to booting up
This page displays the remaining time left on the card as well as the time already recorded on the card.
Automatic Record after Boot up
Record on boot up allows the onboard recorder to automatically start recording after the ZMT3-HH boots up.
• ON - The onboard recorder will automatically start to record after the ZMT3-HH boots up.
• OFF - The onboard recorder will wait for a ZaxNet command or a manual record trigger to start recording.
Recording Mode Set
Record mode sets what the recorder will do after the card is full. Regardless of this setting the card can only
record 500 files.
• NON-LOOP RECORD - Once the card is full the recording will stop and FULL will be displayed. This setting
prevents over-writing any portion of the audio.
• LOOP RECORD - Once the card is full, the new audio will begin over-writing the oldest audio on the card.
Low Battery Stop Set
Low battery stop will set the amount of time, after a low battery warning occurs, the on-board recorder will
close the current file and stop recording.
This is to prevent possible file corruption if the unit constantly powers off and on due to a dead battery.
• NEVER STOP - The onboard recorder will not stop recording unless it is manually stopped by a key press, or
when it receives a stop command via ZaxNet, or if the battery dies.
• Any interval from 1 to 99 minutes - Once the battery indicator starts blink a low battery warning the
onboard recorder will continue to record for the time set here - then it will close the file and stop recording.
TIME LEFT 20 H
TIME USED 4 H
____
RECORD ON BOOTUP
OFF
RECORD MODE:
LOOP RECORD
LOW BATT STOP:
NEVER STOP

Zaxcom ZMT3-HH Transmit Menu
11
TRANSMIT MENU
UHF Transmitter Power Level Set
The UHF transmit power of the ZMT3-HH is set from this page. The transmit power can be adjusted to
output 25, 50 or 75mW. The higher the power setting the more battery power will be required.
UHF Transmit Modulation Set
The UHF transmission modulation is the way the ZMT3-HH sends audio to the receiver. The modulation format
is set from this menu. Please note if the transmission format that is set here, and the format set on the receiver
do not match, the receiver will be unable to decode the audio from the transmitter. Also note that after any
change to the transmit format the ZMT3-HH will need to be rebooted by pressing the card key before the new
format takes effect.
MONO
XR
ZHD 96
ZHD 48
Modulation Bandwidth
200 kHz
200 kHz
96 kHz
48 kHz
Minimum Channel to Channel Spacing
400 kHz
400 kHz
200 kHz*
100 kHz**
6 MHz TV Channel Capacity
15
15
30
60
Latency
3.5ms
6ms
6ms
18ms
Compatibility with a 200 Series Receiver
2 Transmitters
2 Transmitters
2 Transmitters
1 Transmitter
Transmitter Disable - Record only mode
• Record Only Mode - Will set the ZMT3-HH to act as a standalone recorder and will not transmit any audio
over UHF. Please note the XLR output will still be active. This mode will also conserve battery power since the
transmitter is disabled.
• Normal TX Mode - Will allow the ZMT3-HH to both transmit audio and record on its internal micro SD card.
TX FORMAT:
ZHD96
PRESS CARD TO REBOOT
TX DISABLE :
NORMAL TX MODE
TX POWER: 50MW

Zaxcom ZMT3-HH ZaxNet Menu
12
ZAXNET MENU
ZaxNet Mode
This menu sets the mode of the ZaxNet receiver.
• OFF - The ZaxNet transceiver is disabled. The ZMT3-HH will not receive ZaxNet commands or time code and
it will not transmit any ZaxNet audio. Please note if ZaxNet mode is set to OFF the several ZaxNet menu
items will not appear.
• RX - The ZaxNet transceiver will receive ZaxNet commands and time code.
This screen will display what ZaxNet data is being received by the ZMT3-HH. Including total received
information packets, ZaxNet TC received and remote control commands received. This information is used
for debugging purposes.
ZaxNet Receive Frequency Set
This menu will only appear if the ZMT3-HH is set to receive (RX) mode
The ZaxNet receive frequency is the frequency that the ZMT3-HH will get its wireless time code and remote
control commands on. This frequency will need to match the frequency of the corresponding ZaxNet
transmitter. The ZaxNet transmitter can be a QRX with QIFB, Nomad, TRX900CL or IFB100/200. The ZMT3-HH
can also receive ZaxNet time code from another TRX transmitter or a ZFR recorder that is transmitting ZaxNet
on this frequency. Please keep in mind that the range will be limited when receiving ZaxNet from a TRX or ZFR.
When the ZMT3-HH is receiving a valid ZaxNet signal the signal strength will be shown as well as signal strength
meter that runs vertically on the far right side of the screen.
ZaxNet Transmit Frequency Set
This menu will only appear if the ZMT3-HH is set to transmit (TX) mode
The ZaxNet transmit frequency is the frequency that the ZaxNet transmitter on the ZMT3-HH will broadcast
time code and confidence audio on. Please note the ZaxNet transmitted audio is for quality control purposes
and the expected range will be less than 20 feet.
ZAXNET MODE: TX
RX FREQ : 2.403 RX
SIGNAL : 28
ZAXNET TX FREQ:
2.473

Zaxcom ZMT3-HH ZaxNet Menu
13
Low Power ZaxNet
This menu sets the mode of the ZaxNet receiver.
• OFF - The ZMT3-HH will act normally. It will receive both ZaxNet audio and commands.
• ON - Shuts off the ZaxNet receiver’s ability to receive ZaxNet audio (which is generally not necessary in
ZMT3-HH). The ZMT3-HH will still receive commands via ZaxNet. This setting will conserve battery power.
Group Code Set
This menu is where the ZMT3-HH is assigned to a group. The group code allows transmitters to be grouped
together so they can be controlled via ZaxNet without affecting others.
So for example a ZMT3-HH set to Group 1 will be controlled by a ZaxNet transmitter set to Group 1 and a
ZMT3-HH assigned to group 2 will be controlled by a Group 2 ZaxNet transmitter. This is helpful if two or more
people on set are sending ZaxNet commands. Therefore the different group codes allow each person to be
independent and not interfere with each other. Most users leave the group set to 1 on all of their Zaxcom
products. Group codes can be set from 1 to 99.
Unit Code Set
This menu is where the ZMT3-HH is assigned a unit code. The unit code is a unique number used to identify each
ZMT3-HH within a particular group. This allows individual transmitters within the same group to be independently
controlled. Each transmitter should have a different unit code.
Unit codes can be assigned any number from 1 to 200.
ZaxNet Voting Enable
This menu will only appear if the ZMT3-HH is set to receive (RX) mode
The purpose of voting is to allow the ZaxNet receiver in the ZMT3-HH to choose, and switch to, the stronger
signal from two different ZaxNet transmitters. One purpose of this is if on a large set a second IFB transmitter
can be placed at a different location so the ZaxNet receiver in the ZMT3-HH can choose the stronger signal.
Please note that the second ZaxNet transmitting frequency must be set 2MHz higher than the first ZaxNet
transmitter.
REMOTE CONTROL
GROUP CODE = 1
REMOTE CONTROL
UNIT CODE = 001
ZAXNET VOTING:
NORMAL (OFF)
LOW PWR ZNET:
OFF

Zaxcom ZMT3-HH ZaxNet Menu
14
ZaxNet Receive Before Transmit Time
This menu adjusts the state of the ZaxNet transceiver. This also sets how long after boot-up up the TRXLT3
will search for ZaxNet time code before it begins transmitting its audio over ZaxNet for monitoring
purposes. This is so the ZMT3-HH can lock to ZaxNet time code source before the unit will send confidence
audio over ZaxNet.
Record Beep Set
This menu will only appear if the ZMT3-HH is set to transmit (TX) mode
When the record beep is set to ON, and the ZMT3-HH is recording, the confidence audio sent to the ERX via
ZaxNet will have an audible beep, in variable intervals, giving conformation that the ZMT3-HH is indeed
recording. The beeps will only be heard in the ERX and will not be recorded on the card, or be sent to the UHF
receiver. The intervals can be set between 2 to 18 seconds in 2 second increments.
Receive only mode.
The ZaxNet transceiver will only receive ZaxNet and NOT go into
transmit mode. Therefore no ZaxNet TC and/or audio will be
transmitted. This setting shuts off the ZaxNet transmitter.
Receive then Transmit mode.
After boot up the ZaxNet transceiver will search for a
ZaxNet signal for the selected time so it can receive and
lock time code before it begins to transmit TC and
confidence audio.
This is adjustable from 1 to 20 Seconds.
Transmit only mode.
The ZaxNet transceiver will only transmit ZaxNet TC and
audio and will NOT receive wireless TC or ZaxNet
commands. This setting shuts off the ZaxNet receiver.
RX TO TX TIME:
OFF (NORMAL RX)
ZAXNET RX TO TX:
0 SEC: TX ONLY
ZAXNET RX TO TX:
20 SEC
ZNET RECORD BEEP
OFF

Zaxcom ZMT3-HH Audio Menu
15
AUDIO MENU
High Pass Filter
The high pass filter is turned on and adjusted from this menu.
The high pass filter range is 70Hz to 220Hz in 10Hz increments.
2K Notch Filter
The 2K notch filter is useful in removing digital RF interference that can be introduced into some microphones.
HIGH PASS FILTER:
90Hz
____
2K NOTCH FILTER
ON

Zaxcom ZMT3-HH Audio Menu
16
Dynamics
The dynamics is a soft knee compressor that is located after the analog to digital converter which will limit
the dynamic range to prevent clipping during occurrences of loud audio. Dynamics is comprised of both a
compressor and an expander, which operate jointly. The compressor in the dynamics can set to mild or
extreme compression and features a soft knee for more transparent operation.
To enter the Dynamics Menu
Press the INC or DEC key - “PARMS” (parameters) will be displayed on the right.
To move to the next parameter, press the MENU key.
To exit this page, hold the MENU key for 1 second.
Dynamics Parameters
• Link L-R: OFF / ON: If using a stereo transmitter this links the left and right signal so if one side of the signal
needs compressing / expansion the other side will do the same to match.
• SPEED (Decay Speed) : SLOWEST / SLOW / NORMAL / FAST / FASTEST
Sets how gradual the signal level decreases after a signal reaches the threshold setting. This is typically set
to FAST.
• ATTACK (Attack Speed) : SLOWEST / SLOW / NORMAL / FAST / FASTEST
Sets the speed in how fast the gain is reduced once the signal exceeds the threshold setting. This is typically
set to FAST.
• CMP RATIO (Compressor Ratio): Valid range: 1.0: to 5.0:1, in 0.1 steps.
The amount of gain reduction is determined by the compressor ratio setting.
A compressor ratio for example of 2.0:1 means for every 1 dB above the compressor threshold the gain will
be reduced 2dB. A higher ratio setting makes the compressor more aggressive.
• CMP THRESH (Compressor Threshold): Valid range: 0 to –96dB, in 1dB steps.
This sets the level in which gain reduction occurs.
• CMP KNEE: (Compressor Soft Knee): Valid range: 0 to 20dB, In 1dB steps.
Sets the compressor's soft knee. A soft knee reduces “softens” the audible change from uncompressed to
compressed, this is useful especially for higher ratios where the changeover is more noticeable
• EXP RATIO (Expansion Ratio): Valid range: 1:1.00 to 1:4.00, In 0.01 steps
Sets the expansion ratio. For example a 1:2.0 expansion ratio means for every 1 dB below the expansion
threshold the gain will be reduced 2dB.
• EXP THRESH (Expansion Threshold): Valid range: 0 to –96dB, in 1dB steps.
Sets the threshold above which gain reduction occurs.
• REDUCE (Expander Gain Reduction): Valid range: 0 to –36dB, in 1dB steps.
This sets the limit on the amount of gain reduction caused by the expander.
• GAIN (Make-up Gain): Valid range: 0 to 30dB, In 1dB steps.
Gain is used to compensate for the gain reduction caused by the compressor. Because the compressor is
reducing the gain (or level) of the signal, the ability to add a fixed amount of make-up gain at the output is
provided so that an optimum level can be reached
DYNAMICS

Zaxcom ZMT3-HH Time Code Menu
17
TIME CODE MENU
Time Code Frame Rate Set
The time code frame rate menu is where the time code frame rate is set.
The ZMT3-HH will lock to and record all standard time code frame rates.
• 23.98, 24, 25, 29.97DF, 29.97DF, 30 DF, 30 NDF
TC Jam Mode Select
This menu controls if the ZMT3-HH will go into record when it receives a record run time code.
• AUTO-JAM NORMAL - The ZMT3-HH will continuously jam time code via ZaxNet and will go into record
when receiving a record command via ZaxNet or if the unit is put into record manually by pressing the
CARD and INC keys simultaneously.
• AUTO-LOAD REC RUN - In Auto-Load mode the ZMT3-HH will go into record when it detects rolling time
code, and will stop when the time code stops. If time code is lost because the IFB signal is too weak the
unit will not stop but will continue in whatever state it was in until the time code signal is restored.
Mute Time Code Transmission Until Jammed
If the mute time code menu is set to ON the ZaxNet transmitter will not broadcast time code over ZaxNet
until the transmitter receives time code and jams its own internal time code generator. This prevents the
ZaxNet from sending incorrect time code to another device.
Auto Frame Rate Enable
When turned ON the ZMT3-HH will automatically set its frame rate to the frame rate that is being
transmitted from the ZaxNet transmitter that is feeding the ZMT3-HH. If auto frame rate is set to OFF the
frame rate will need to be adjusted manually. Please note that auto frame rate will only work when the time
code is being received over ZaxNet and will not work when time code is being received via the audio input.
TIMECODE 23.98
GEN 09:18:05:02
____
TC JAM MODE:
AUTO-JAM NORMAL
MUTE TC SEND
UNTIL JAMED: OFF
AUTO FRAME RATE
ON (23.98)

Zaxcom ZMT3-HH Setup Menu
18
SETUP MENU
LED Color
This menu sets the color of the LED light ring. The light ring can be set to OFF, BLUE, GREEN, CYAN, RED,
MAGENTA, YELLOW, or WHITE.
LED Ring Mode
This menu controls when the light ring illuminates.
• OFF - The light ring will not illuminate.
• ALWAYS ON - The light ring will always stay illuminated.
• ON WHEN MUTED - The light ring will illuminate when the microphone is muted via the key.
• ON WHEN PRESSED - The light ring will illuminate when the key is pressed regardless to what the key
function is set to.
• MODULOMETER -The light ring will illuminate when audio is present in the microphone. The ring will
illuminate green then yellow and then red, just before the signal is about to clip. The ring will turn blue
when NeverClip activates.
Key Function
This menu sets the function of the mute key.
• OFF - The key has no function.
• PUSH TO TALK - The key need to be pushed to transmit, record or output audio.
• PUSH TO MUTE - Pushing the key will mute the audio.
• TAP TO TOGGLE - Pushing the key toggles between mute mode and un-mute mode.
Test Tone
•
•
•
•
The ZMT3-HH has an internal tone generator so the signal chain can be properly gain staged. From this menu
pressing the INC key will turn on the tone generator pressing the INC key will cycle trough the different tone
options (500Hz at -20, 1000Hz at -20 or 500Hz at full scale).
TEST TONE: ON
I I I
MUTE SWITCH:
OFF
LED COLOR:
BLUE
LED RING MODE:
OFF

Zaxcom ZMT3-HH Setup Menu
19
Standby Mode After Boot Up
This menu sets what power mode the ZMT3-HH boots up to.
• NORMAL MODE - The transmitter will boot up normally.
• STANDBY MODE - The transmitter boots up in low power standby mode. The transmitter will be waiting for
a manual press the of the MENU key to come up to full power.
• REMOTE STANDBY - The transmitter boots up in low power standby mode. The transmitter will be waiting
for a ZaxNet “WAKE” command to come up to full power.
Key Lock On Boot Up
This menu sets what happens to the keys on the face of the ZMT3-HH after boot-up.
• LOCKED - After boot-up has completed, the transmitter will automatically go into lock mode and the keys
will be locked to prevent accidental changes to the settings.
• UNLOCKED - After boot-up the keys will remain unlocked. In unlocked mode the keys can still be locked
going in to the lock screen in the main menu and wait 5 seconds.
To unlock the keys at any time - simultaneously press the MENU and INC key 5 times.
STANDBY B00T MODE:
NORMAL MODE
KEY LOCK ON BOOT:
UNLOCKED

Zaxcom ZMT3-HH Setup Menu
20
QRX / ERX Firmware Update
This page is used to update the firmware on a QRX or ERX receiver.
If the ZaxNet mode is set to OFF or receive (RX) this menu will allow for QRX firmware to be updated - if the
ZaxNet mode is set to transmit (TX) then this menu will allow for ERX to be updated.
For complete update instructions see the FIRMWARE section in the back of this manual.
OLED Brightness Adjust
This setting adjusts the brightness of the OLED display. The brightness setting is from 0 to 3 with 3 being the
brightness.
OLED Display Dim
This setting adjusts the brightness of the OLED display. The brightness can be set from 0 to 3 with 3 being the
brightest and 0 the dimmest.
Information Page
This page displays the current firmware version, the serial number, the DSP version, and the option code.
Hide Encryption Menu
This setting will hide the encryption menu. A hidden encryption menu allows for quicker navigation and
prevents accidental changes.
• HIDDEN - The encryption menu doesn’t appear when cycling through the menu settings.
• DISPLAYED - The encryption menu will appear.
ENCRYPTION MENU:
ON
- - - INFO - - -
FIRMWARE V1-37
SN: 1234 DSP:1B (ZHD)
OPT = 03
PRESS TO SEND
QRX PROG FILE
OLED BRIGHTNESS:
3
DISPLAY DIM:
OFF (NORMAL)