Zaxcom QRX235 User manual

1
User Manual
Published December 2018
Firmware Version QR2-413
QIFB Version 1.60
QRX235
Your Sound Amplified

2
QRX235 RECEIVER ......................................................................................................................................... 4
FRONT ......................................................................................................................................................................4
REAR ........................................................................................................................................................................5
SIDE .........................................................................................................................................................................6
HOME SCREEN .............................................................................................................................................. 7
MAIN MENU ................................................................................................................................................. 8
NAVIGATING THE MAIN MENU .....................................................................................................................................8
EXITING THE MAIN MENU............................................................................................................................................8
FREQUENCY ADJUST....................................................................................................................................................8
Adjusting the receive frequency of the QRX...................................................................................................... 8
TRANSMITTER GAIN ADJUST ......................................................................................................................................... 8
Adjusting the transmitter gain remotely ........................................................................................................... 8
UNIT CODE SELECT .....................................................................................................................................................9
TEST TONE OUTPUT .................................................................................................................................................... 9
FREQUENCY SCAN.....................................................................................................................................................10
Single mode scanning ......................................................................................................................................10
Selecting a frequency....................................................................................................................................... 10
Dual mode scanning.........................................................................................................................................10
EXTENDED MENU.........................................................................................................................................11
NAVIGATING THE EXTENDED MENU.............................................................................................................................11
EXITING THE EXTENDED MENU ...................................................................................................................................11
MODULATION SELECT................................................................................................................................................11
SINGLE /DUAL MODE SELECT.....................................................................................................................................11
AES OUTPUT ENABLE................................................................................................................................................12
OUTPUT ASSIGNMENT...............................................................................................................................................12
IFB OUTPUT MIX .....................................................................................................................................................12
IFB ENABLE .............................................................................................................................................................12
TRANSMITTER REMOTE CONTROL ENABLE ....................................................................................................................13
SERIAL PORT ............................................................................................................................................................13
TIME CODE SOURCE..................................................................................................................................................13
OUTPUT ROUTING ....................................................................................................................................................13
QRX SOFTWARE UPDATE...........................................................................................................................................14
AES RECOGNIZE .......................................................................................................................................................14
AES OUTPUT SAMPLE RATE ADJUST ............................................................................................................................14
LED BRIGHTNESS SET................................................................................................................................................14
BLUE LED SET..........................................................................................................................................................15
ENCRYPTION CODE SET..............................................................................................................................................15
Adjusting the encryption code.........................................................................................................................15
FREQUENCY PRESETS ...................................................................................................................................16
IFB OPTION MENU .......................................................................................................................................17
NAVIGATING THE IFB OPTION MENU...........................................................................................................................17
IFB HOME SCREEN ...................................................................................................................................................17
IFB STATUS /TRANSMITTER TRANSPORT CONTROL........................................................................................................17
IFB INPUT MIX ASSIGN..............................................................................................................................................18
REMOTE POWER MODE.............................................................................................................................................19
TIME CODE SET ........................................................................................................................................................19
TIME CODE FRAME-RATE SELECT ................................................................................................................................20

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IFB EXTENDED MENU ...................................................................................................................................21
NAVIGATING THE IFB EXTENDED MENU .......................................................................................................................21
INPUT TRIM SET .......................................................................................................................................................21
OUTPUT TRIM SET ....................................................................................................................................................21
IFB FREQUENCY SET..................................................................................................................................................21
IFB MODE SET .........................................................................................................................................................22
GROUP ID SET .........................................................................................................................................................22
IFB VOTING ENABLE .................................................................................................................................................22
UPDATING THE IFB SOFTWARE ...................................................................................................................................22
TIME CODE OUTPUT LEVEL SET...................................................................................................................................23
TIME CODE FRAME RATE SET .....................................................................................................................................23
TIME CODE JAM MODE SET .......................................................................................................................................23
TIME CODE DELAY SET ..............................................................................................................................................23
TIME CODE MUTE TIME SET.......................................................................................................................................24
AUDIO DELAY SET.....................................................................................................................................................24
ZAXNET OUTPUT ENABLE...........................................................................................................................................24
IFB TRANSMIT POWER LEVEL SET................................................................................................................................24
SEND RECORD COMMANDS........................................................................................................................................24
IFB ENCRYPTION SET.................................................................................................................................................25
FIRMWARE ..................................................................................................................................................26
UPDATING THE QRX FIRMWARE USING A TRANSMITTER..................................................................................................26
UPDATING THE QRX IFB FIRMWARE USING A IFB100/200 ............................................................................................27
UPDATING THE QRX IFB FIRMWARE USING A UHF TRANSMITTER ....................................................................................28
WIRING DIAGRAMS......................................................................................................................................29
AUDIO OUTPUT CONNECTORS ....................................................................................................................................29
Single Analog Channel out of one TA5............................................................................................................. 29
Two Analog Channels out of one TA5.............................................................................................................. 29
AES Digital out of TA5 ......................................................................................................................................29
TIME CODE CONNECTOR -3.5MM ..............................................................................................................................30
Time Code in to QRX ........................................................................................................................................ 30
Time Code out of QRX...................................................................................................................................... 30
IFB AUDIO CONNECTOR -3.5MM ...............................................................................................................................30
SERIAL LOOP CONNECTOR -USB (RS-485) ..................................................................................................................31
OPERATING FREQUENCIES............................................................................................................................32
ZAXNET REMOTE CONTROL AND TIME CODE ................................................................................................................32
UHF AUDIO.............................................................................................................................................................32
ANTENNA CUTTING CHART...........................................................................................................................33
SPECIFICATIONS...........................................................................................................................................34
PRODUCT SUPPORT .....................................................................................................................................36
ZAXCOM WARRANTY POLICY AND LIMITATIONS.............................................................................................................37

Zaxcom QRX235 Front
4
QRX235 Receiver
Front
1. OLED Display
2. INC Key - Used to increase the parameters of a menu item.
3. UHF Antenna Connectors (2) - SMA connectors.
4. Dec Key - Used to decrease the parameters of a menu item.
5. Menu Key - Press to advance to the next menu item.
6. Receiver Status Indicators
Green - Receiver is receiving a valid signal.
Red - Receiver is not getting a valid signal.
7. A/B Key - Press to alternate between receivers in dual mode.
8. Power Key - Press and hold for 2 seconds to power up the QRX. Press and hold for 5 seconds to power
down the QRX.
2
4
1
3
5
6
7
3
8

Zaxcom QRX235 Rear
5
Rear
1. DC Power Input - The QRX uses a Switchcraft 761K connector.
2. Audio out connectors (2) - TA5M
These connectors will output the audio from the QRX. The same connectors can be used to output either
analog audio or AES audio. The audio assignments for the TA5 connectors are set in the extended menu.
3. IFB Audio - 3.5mm TRS (available with the QIFB option)
•When ZaxNet is set to transmit (TX) this connector will accept external audio for IFB transmission.
•When ZaxNet is set to receive (RX) this connector will output the ZaxNet received audio.
4. Time Code In/ Out - 3.5mm TRS (available with the QIFB option).
This connector will input or output time code depending on how the cable is wired. Please see the wiring
diagram section of this manual.
5. Serial Loop -The USB style connectors on the back of the QRX allow multiple QRXs to share a single
common QIFB option. For example one master QRX with a QIFB option board can be connected to 3 QRXs
with no option boards. The QRXs without option boards will behave as if they have an IFB option board
and will send remote control commands over the serial link to the master QRX.
Please note the USB connectors are NOT generic USB connectors that can be used as a connection to any
computer. These are used to exchange RS-422/RS-485 commands and a special cable is required to do this
please see the wiring diagram section of this manual for more information.
3
2
1
4
5

Zaxcom QRX235 Side
6
Side
Side Mounted LEDs - The LEDs give visual indication if RF and / or audio are being received by the QRX. The LED
settings are adjusted in the extended menu. There are three LEDs per group and one group for each receive
channel. The group to the top represents channel one, the group below is channel 2, the next group is channel 3,
and the group on the bottom is channel 4.
LED modulation colors
When the signal hits -40 dBFS
When the signal hits -20 dBFS
When the signal hits -10 dBFS
When the signal hits -8 dBFS
When the signal hits -5 dBFS
ZaxNet Antenna Connector - SMA connector
When the QRX has the QIFB option installed this is where the ZaxNet antenna will be connected.
ZaxNet Antenna
SMA Connector
Channel 1
Channel 2
Channel 3
Channel 4

Zaxcom QRX235 Home Screen
7
Home Screen
Receiver
The QRX has two individual receivers the A (left receiver) and the B (right receiver).
Audio level
Indicates the incoming audio level for each receiver, the meter extends from the left to the right. The vertical
bars to the right are the -20dBFS and -10dBFS marks.
Transmitter’s battery level
The battery diagram displays the transmitter’s battery level. The battery type being used in the transmitter needs
to be set in the transmitters extended menu. The battery symbol will start to blink just before transmitter shuts
down.
Transmitter’s record status
•S (STOP) The transmitter is stopped.
•R (REC) The transmitter is recording.
•P (PLAY) The transmitter is playing back.
RF signal strength
This shows the radio signal strength of the corresponding transmitter. The RF signal is depicted as a staircase
pattern with the lowest step (low signal strength) on the left and building up as it progresses to the right (higher
signal strength). When more stairs are showing the stronger the signal is.
Receiving antenna
Indicates the signal is being received by antenna 1 (left antenna connector)
Indicates the signal is being received by antenna 2 (right antenna connector)
A
S
BS

Zaxcom QRX235 Main Menu
8
Main Menu
Navigating the Main Menu
•To enter the main menu - press the MENU key.
•To advance to the next menu press the MENU key again.
Exiting the Main Menu
•To exit the main menu at any time press and hold the MENU key for 1.5 seconds.
Frequency Adjust
The frequency select menu is where the QRX235 receive frequencies are set. These frequencies need to match
the frequencies that are set on the corresponding transmitters.
Adjusting the receive frequency of the QRX
•Press the INC key and DEC key to adjust the frequency.
•In dual receive mode pressing the A/B key will toggle between the A and B receiver.
The > will indicate the receiver being adjusted.
Transmitter Gain Adjust
This menu is only available when transmitter remote control is set to “ON” in the extended menu.
The transmitter gain menu allows for the input gain on the transmitter to be remotely adjusted when the QRX235
has a QIFB option board installed the gain of the corresponding transmitters. The transmitter gain menu will
display the gain level and an audio meter with a -20dBFS and -10dBFS mark on the right.
Adjusting the transmitter gain remotely
•Press the INC key to increase the transmitters gain. As the gain is increased“+ + +” will replace the gain level.
•Press the DEC key to decrease the transmitters gain. As the gain is decreased “- - -” will replace the gain level.
•When in dual mode pressing the A/B key will toggle between the two transmitters.
TX A 24
GAIN
CH A > 567.4
CH B 570.0

Zaxcom QRX235 Main Menu
9
Unit Code Select
This menu is only available when transmitter remote control is set to “ON” in the extended menu.
This menu sets the unit code that will correspond to the transmitter that is being controlled. The unit code is a
unique number used to identify a transmitter within a particular group. This allows individual transmitters that
are within the same group to be independently controlled. Unit codes can be any number from 1 to 200.
Test Tone Output
From the tone menu a 1K test tone can be enabled. That tone will be outputted from the TA5 connectors.
This is used to set levels and check routing.
Pressing the INC and DEC key will cycle through the different tone settings.
•OFF - No tone is being outputted.
•-20dBFS -Tone is simultaneously sent to all 4 outputs at -20dBFS.
•CHAN-ID -Tone is sequentially sent to each channel one at a time at -20dBFS.
•+0dBFS -Simultaneously sends tone to all 4 channels at 0dBFS (full scale)
RXA UNIT: 1
RXB > UNIT: 2
TONE:
OFF

Zaxcom QRX235 Main Menu
10
Frequency Scan
The frequency scan menu is where the QRX can scan and search for a clear frequency. After the scan is
complete a graphical display of the RF that is present, in that specified range will be shown and the QRX235
will suggest a clear frequency. That frequency can be accepted by pressing the INC key. Or press the DEC key
to skip the first chosen frequency and have the QRX235 suggest another frequency.
Single mode scanning
•Turn off the transmitter.
•Press the INC key to initiate a scan.
•As the block is being scanned, the frequency being examined is
displayed on the bottom half of the screen and a graphic map of the
RF that is found will be displayed with a vertical line extending up from
the baseline. The length of the line indicates the level or strength of
the found RF at that frequency.
Selecting a frequency
When the scan is complete a suggested frequency will be shown and a
vertical blinking line will be drawn on the display.
At that point:
•Press the INC key to accept the frequency.
•Press the A/B key or the DEC key to suggest another frequency.
Dual mode scanning
•Turn on the first transmitter and set it to the chosen frequency.
•Press the A/B key to scan the B receiver.
•Press the INC key to initiate a scan.
•Select the second frequency the same way the first frequency was
selected.
PRESS TO SCAN
SCANNING 568.9
TAKE 578.2