Kramer Electronics, Ltd.
USER MANUAL
Model:
VP-727A
Audio Switcher
Contents
Contents
1
2
2.1 Quick Start 1
3
4
4.1 The VP-727A Audio Switcher Underside 6
5
6
6.1 Connecting the VP-727A Audio Switcher 8
6.2 Connecting a PC (via RS-232) to a Standalone VP-727A 10
6.3 Configuring the VP-727A with the VP-727xl and the VP-727T 11
6.4 Connecting via RS-485 13
6.4.1 Connecting the VP-727A to the VP-727T via the VP-727xl 13
6.4.2 Connecting the VP-727A to the VP-727T via the VP-727 14
7
7.1 Downloading from the Internet 16
7.2 Connecting the PC to the RS-232 Port 16
7.3 Upgrading Firmware 17
8
9
Figures
Figure 1: VP-727A Audio Switcher 4
Figure 2: VP-727A Audio Switcher Underside 6
Figure 3: Connecting the VP-727A with a VP-727xl Machine 9
Figure 4: Connecting the PC 10
Figure 5: Connecting 2 VP-727A machines to the VP-727T via 2 VP-727xl Machines 11
Figure 6: Connecting the VP-727A to the VP-727T via the VP-727 12
Figure 7: RS-485 Configuration between the VP-727A and the VP-727xl 14
Figure 8: RS-485 Configuration between the VP-727A and the VP-727 15
Figure 9: Splash Screen 17
Figure 10: Atmel – Flip Window 17
Figure 11: Device Selection Window 18
Figure 12: Selecting the Device Window 18
Figure 13: Loading the Hex 19
Figure 14: RS-232 Window 19
Figure 15: Atmel – Flip Window (Connected) 20
Figure 16: Atmel – Flip Window (Operation Completed) 20
Introduction 1
Getting Started 1
Overview 3
Your VP-727A Audio Switcher 3
Installing the VP-727A Audio Switcher on a Rack 7
Configuring the VP-727A Audio Switcher 8
Flash Memory Upgrade 16
Technical Specifications 21
Kramer VP-727A Protocol (Ver. 3.21) 22
i
Contents
Tables
Table 1: VP-727A Audio Switcher Features 5
Table 2: VP-727A Audio Switcher Underside Features 6
Table 3: Technical Specifications of the VP-727A Audio Switcher 21
Table 4: Instruction Codes for the VP-727A Protocol 22
ii
KRAMER: SIMPLE CREATIVE TECHNOLOGY
Introduction
1 Introduction
Welcome to Kramer Electronics! Since 1981, Kramer Electronics has been
providing a world of unique, creative, and affordable solutions to the vast range
of problems that confront the video, audio, presentation, and broadcasting
professional on a daily basis. In recent years, we have redesigned and upgraded
most of our line, making the best even better! Our 1,000-plus different models
now appear in 11 groups1 that are clearly defined by function.
Congratulations on purchasing your Kramer VP-727A Audio Switcher, which is
ideal for staging events, as well as:
Presentation applications that require an audio preview option
Projection systems with sound in conference rooms, board rooms,
auditoriums, hotels, and houses of worship
The package includes these items:
VP-727A Audio Switcher
Power cord2
Null-modem adapter
This user manual
2 Getting Started
We recommend that you:
Unpack the equipment carefully and save the original box and packaging
materials for possible future shipment
Review the contents of this user manual3
Use Kramer high performance high resolution cables4
2.1 Quick Start
This quick start chart summarizes the basic steps when connecting a VP-727A:
1 GROUP 1: Distribution Amplifiers; GROUP 2: Switchers and Matrix Switchers; GROUP 3: Control Systems; GROUP 4:
Format/Standards Converters; GROUP 5: Twisted-Pair Solutions; GROUP 6: Specialty AV Products; GROUP 7: Scan
Converters and Scalers; GROUP 8: Cables and Connectors; GROUP 9: Room Connectivity; GROUP 10: Accessories and
Rack Adapters; GROUP 11: Sierra Products
2 We recommend that you use only the power cord that is supplied with the machine
3 Download up-to-date Kramer user manuals from the Internet at this URL: http://www.kramerelectronics.com
4 The complete list of Kramer cables is on our Web site at http://www.kramerelectronics.com
1
Getting Started
2
KRAMER: SIMPLE CREATIVE TECHNOLOGY
Overview
3 Overview
The Kramer VP-727A is a high performance 8x2 audio switcher for
unbalanced stereo audio signals. It switches any input to either the preview or
program output. The VP-727A is an audio companion switcher for the
VP-727xl Universal Presentation Matrix Switcher / Scaler and the VP-727
Universal Presentation Matrix Switcher / Scaler, and operates in conjunction
with them and the VP-727T Presentation Switcher Control Panel.
The VP-727A features:
Eight unbalanced stereo audio inputs on RCA connectors
Three program outputs: unbalanced stereo audio, balanced stereo audio and
S/PDIF
One unbalanced stereo audio preview output
A selectable headphone connector for preview or program audio outputs
A front panel lockout
A TAKE button for executing preview to program switching (with
transition effects)
An audio-follow-video button when operating in conjunction with the
VP-727xl or the VP-727
Fade to mute audio switching
Separate mute buttons for the preview and program channels
Bass, treble and balance audio controls
Audio delay for each input channel
You can control the VP-727A via the front panel buttons and/or RS-232.
Achieving the best performance means:
Connecting only good quality connection cables, thus avoiding interference,
deterioration in signal quality due to poor matching, and elevated noise
levels (often associated with low quality cables)
Avoiding interference from neighboring electrical appliances, making sure
not to block the ventilation holes, and positioning your VP-727A away
from moisture, excessive sunlight and dust
4 Your VP-727A Audio Switcher
Figure 1 and Table 1 define the front panel of the VP-727A:
3
Your VP-727A Audio Switcher
678
9
101112
13
22232425262728
29
1 2 3 4 5
14151617
18 19 20 21
Figure 1: VP-727A Audio Switcher
4
KRAMER: SIMPLE CREATIVE TECHNOLOGY
Your VP-727A Audio Switcher
Table 1: VP-727A Audio Switcher Features
# Feature Functi on
POWER Switch
1
PREVIEW Input Buttons
2
PROGRAM Input Buttons
3
MUTE
4 Preview Button Press to disable/enable the preview audio output
5
6
7
8
9
10 6.3mm Jack Connect to the headphones
11
12
13 + Button Press to increase the level4
14 - Button Press to decrease the level4
15
16
17
18
19
20
21
22
23
24
25
26
27 RS-485 Port
28
29 Power Connector with Fuse AC connector enabling power supply to the unit
1 From 1 to 8
2 The appropriate LED lights
3 The BASS, TREBLE and BALANCE levels are set for the PROGRAM output. The DELAY is set for each PROGRAM input
4 BASS, TREBLE, BALANCE, DELAY, audio input level (PREVIEW AND PROGRAM), and audio output level
(PREVIEW AND PROGRAM)
5 To reset the VP-727A to its factory default settings, turn the unit OFF, then turn it ON while pressing the TAKE button for about 2
seconds: The preview and program input is set to input 1, the input volume resets to 0dB, and the bass and treble levels reset to 0
6 The ground connection is sometimes connected to the shield of the RS-485 cable. However, usually the ground is not connected
Program Button Press to disable/enable the program audio output
CONTROL SELECT Button
IN LEVEL Button
OUT LEVEL Button
LOCK Button
PHONES
AUDIO LEVEL 7-segment Display
TAKE Button
FADE Button
AFV Button
INPUT RCA Connectors
PROGRAM RCA
Connectors
S/PDIF RCA Connector
PREVIEW RCA
Connectors
OUTPUTS
PROGRAM Terminal Block
Connector
DIP 8 to ON Operates the VP-727A with the VP-727xl (as slave baud rate 38,400)
DIP 7 to ON Operates the VP-727A with the VP-727 or the VP-727 T (as chain baud
DIP 6 to ON
DIPs 2, 3, 4 and 5 to OFF
SETUP DIPs
DIP 1 to ON
RS-232 Connector
Button
Illuminated switch for turning the unit ON or OFF
Press to select an audio source to switch to the PREVIEW output1
Press to select an audio source to switch to the PROGRAM output1
Press to cycle2 between the BASS, TREBLE, BALANCE and DELAY3
Press to select2 the PROGRAM or the PREVIEW input audio level for
each program and preview channel
Press to select2 the PROGRAM, the PREVIEW or the PHONES output
audio level
Press and hold to lock/unlock the front panel buttons
Press to select2 which output (PROGRAM or the PREVIEW) to send to
the headphones
Displays the numerical value of the CONTROL feature4
Press to swap the preview input with the program input5
Press to create a dissolved transition from the PREVIEW to the
PROGRAM output
When pressed, the button is illuminated, and the audio channels
follow the video channels (on the VP-727xl or the VP-727)
Deselect AFV to switch the audio channels independently
RIGHT
Connect to the unbalanced stereo audio source (from 1 to 8)
LEFT
LEFT
Connect to an unbalanced stereo audio program acceptor
RIGHT
Connect to a digital audio acceptor
RIGHT
Connect to an unbalanced stereo audio preview acceptor
LEFT
Connect to a balanced stereo audio program acceptor
rate 115,200)
For stand alone (baud rate 9,600)
For the fade to follow the transition effect; set to OFF for separate fade
Connects to the Kramer VP-727T or the VP-727xl (see section 6.4)
Pin G is for the Ground connection6; pins B (-) and A (+) are for
RS-485
9-pin D-sub
null-modem connection
connector connects to a PC or Remote Controller via a
5
Your VP-727A Audio Switcher
4.1 The VP-727A Audio Switcher Underside
Figure 2 and Table 2 define the VP-727A underside.
1
2
Figure 2: VP-727A Audio Switcher Underside
Table 2: VP-727A Audio Switcher Underside Features
# Feature Function
1
PROGRAM Slide Switch Slide to ON to upgrade to the latest Kramer firmware (see section 7),
2
RS-485 TERMINATION Slide
Switch
or to the right for normal operation (the factory default)
Slide to ON for RS-485 Line Termination with 120, or to the right
for no RS-485 Line Termination
6
KRAMER: SIMPLE CREATIVE TECHNOLOGY
Installing the VP-727A Audio Switcher on a Rack
5 Installing the VP-727A Audio Switcher on a Rack
This section describes what to do before installing in a rack and how to rack
mount.
Before Installing in a Rack
Before installing in a rack, be sure that the environment is
within the recommended range:
Operating temperature range +5º to +45º C (41º to 113º F)
Operating humidity range 10 to 90% RHL, non-condensing
Storage temperature range -20º to +70º C (-4º to 158º F)
Storage humidity range 5 to 95% RHL, non-condensing
To rack-mount a machine:
1. Attach both ear brackets to the
How to Rack Mount
machine. To do so, remove the
screws from each side of the
machine (3 on each side), and
replace those screws through the
ear brackets.
When installing on a 19" rack, avoid hazards by taking
CAUTION!!
care that:
1. It is located within the recommended environmental
conditions, as the operating ambient temperature of a
closed or multi unit rack assembly may exceed the
room ambient temperature.
2. Once rack mounted, enough air will still flow around
the machine.
3. The machine is placed straight in the correct
horizontal position.
4. You do not overload the circuit(s). When connecting
the machine to the supply circuit, overloading the
circuits might have a detrimental effect on overcurrent
protection and supply wiring. Refer to the appropriate
nameplate ratings for information. For example, for
fuse replacement, see the value printed on the
product label.
5. The machine is earthed (grounded) in a reliable way
and is connected only to an electricity socket with
grounding. Pay particular attention to situations where
electricity is supplied indirectly (when the power cord
is not plugged directly into the socket in the wall), for
example, when using an extension cable or a power
strip, and that you use only the power cord that is
supplied with the machine.
2. Place the ears of the machine
against the rack rails, and insert the
proper screws (not provided)
through each of the four holes in the
rack ears.
Note that:
In some models, the front panel
may feature built-in rack ears
Detachable rack ears can be
removed for desktop use
Always mount the machine in the
rack before you attach any cables
or connect the machine to the
power
If you are using a Kramer rack
adapter kit (for a machine that is not
19"), see the Rack Adapters user
manual for installation instructions
(you can download it at:
http://www.kramerelectronics.com)
7
Configuring the VP-727A Audio Switcher
6 Configuring the VP-727A Audio Switcher
This section describes how to:
Connect the VP-727A (see section 6.1)
Connect a PC (see section 6.2)
Configure an AV presentation switcher, with a controller (see section 6.3)
Connect via the RS-485 (see section 6.4)
6.1 Connecting the VP-727A Audio Switcher
To connect1 the VP-727A as illustrated in the example in Figure 3, do the
following2:
1. Connect the unbalanced audio sources to the inputs3. For example, the
unbalanced audio signal of:
A DVD player to the INPUT 1 LEFT and RIGHT RCA connectors
A camera to the INPUT 3 LEFT and RIGHT RCA connectors
An HDTV satellite receiver to the INPUT 5 LEFT and RIGHT RCA
connectors
2. Connect the following unbalanced audio outputs4:
The PROGRAM LEFT and RIGHT RCA connectors to a Program
acceptor (for example, a power amplifier with speakers)
The PREVIEW LEFT and RIGHT RCA connectors to a Preview
acceptor (for example, the Kramer 901 Personal Stereo Amplifier5
connected to speakers)
3. Connect the RS-485 terminal block connector on the VP-727A to the
AUDIO CONTROL terminal block connector of the Kramer VP-727xl.
4. On the VP-727A, set DIP 8 to ON6. Make sure that all the other
dipswitches are set to OFF.
5. Connect the RS-485 terminal block connector on the VP-727xl (see
section 6.3) to the RS-485 terminal block connector of the VP-727T.
6. Connect the power cord7 (not shown in Figure 3).
1 You do not have to connect all the inputs and outputs
2 Switch OFF the power on each device before connecting it to your VP-727A. After connecting your VP-727A, switch on its
power and then switch on the power on each device
3 The video inputs are connected to the VP-727xl in this example. Refer to the separate user manuals for these machines,
which can be downloaded from the Internet at this URL: http://www.kramerelectronics.com
4 You can also connect the S/PDIF digital audio RCA connector and the balanced stereo audio terminal block connector to
the appropriate audio acceptors (not illustrated in Figure 3)
5 You can download this user manual from the Internet at: http://www.kramerelectronics.com
6 When connecting the VP-727A to the VP-727, set DIP 7 to ON and make sure that all the other dipswitches are set to OFF
7 We recommend that you use only the power cord that is supplied with this machine
8
KRAMER: SIMPLE CREATIVE TECHNOLOGY
Configuring the VP-727A Audio Switcher
Figure 3: Connecting the VP-727A with a VP-727xl Machine
9
Configuring the VP-727A Audio Switcher
DB9 (To Presentation
Switcher / Scaler)
)
6.2 Connecting a PC (via RS-232) to a Standalone VP-727A1
You can connect a PC (or other controller) to a standalone VP-727A via the
RS-232 port for remote control and for upgrading the firmware.
To connect a PC to a VP-727A unit, using the Null-modem adapter provided
with the machine (recommended):
Connect the RS-232 9-pin D-sub rear panel port on the VP-727A unit to the
Null-modem adapter and connect the Null-modem adapter with a 9-wire flat
cable to the RS-232 9-pin D-sub port on your PC
To connect a PC to a VP-727A unit, without using a Null-modem adapter:
Connect the RS-232 9-pin D-sub port on your PC to the RS-232 9-pin
D-sub rear panel port on the VP-727A unit, forming a cross-connection2, as
Figure 4 illustrates
DB9 (From PC
Figure 4: Connecting the PC
1 When the VP-727A is configured with the VP-727xl, the audio follows the video and the VP-727A cannot be controlled via
a PC
2 Also known as a Null-modem connection
10
KRAMER: SIMPLE CREATIVE TECHNOLOGY
Configuring the VP-727A Audio Switcher
6.3 Configuring the VP-727A with the VP-727xl1 and the VP-727T
The VP-727A can be controlled by the VP-727T in conjunction with one or
more VP-727xl or VP-727 units. The VP-727A can be connected to the:
VP-727xl (see Figure 5) or the VP-727 (see Figure 6)
VP-727T via the VP-727xl or the VP-727 using the RS-485 ports
The example in Figure 5 illustrates how to connect two VP-727A machines and
two VP-727xl machines to a VP-727T controller.
On each VP-727A machine, set DIP 8 to ON. The other dipswitches are set to OFF
Figure 5: Connecting 2 VP-727A machines to the VP-727T via 2 VP-727xl Machines
1 Or the VP-727
11
Configuring the VP-727A Audio Switcher
The example in Figure 6 illustrates how to connect a VP-727A and a VP-727
machine to a VP-727T controller.
On the VP-727A, set DIP 7 to ON. The other dipswitches are set to OFF
Figure 6: Connecting the VP-727A to the VP-727T via the VP-727
12
KRAMER: SIMPLE CREATIVE TECHNOLOGY
Configuring the VP-727A Audio Switcher
6.4 Connecting via RS-485
You can connect the VP-727A to the VP-727T, via RS-485 communication,
via the VP-727xl (see section 6.4.1) or via the VP-727 (see section 6.4.2).
6.4.1 Connecting the VP-727A to the VP-727T via the VP-727xl
To connect the VP-727A to the Kramer VP-727T Presentation Switcher
Control Panel via the RS-485 control port, as illustrated in the example in
Figure 7, do the following:
1. Connect the VP-727A to the VP-727xl as follows:
Connect the “A” (+) PIN on the RS-485 rear panel port of the
VP-727A to the A (+) PIN on the AUDIO CONTROL rear panel port
of the VP-727xl unit
Connect the “B” (-) PIN on the RS-485 rear panel port of the VP-727A
to the B (-) PIN on the AUDIO CONTROL rear panel port of the
VP-727xl unit
If shielded twisted pair cable is used, the shield may be connected to
the “G” (Ground) PIN on one of the units
2. Connect the VP-727xl to the VP-727T as follows:
Connect the “A” (+) PIN on the RS-485 rear panel port of the
VP-727xl to the A (+) PIN on the RS-485 rear panel port of the
VP-727T unit
Connect the “B” (-) PIN on the RS-485 rear panel port of the VP-727xl
to the B (-) PIN on the RS-485 rear panel port of the VP-727T unit
If shielded twisted pair cable is used, the shield may be connected to
the “G” (Ground) PIN on one of the units
3. Slide the underside RS-485 TERMINATION switch to ON.
13
VP-727A
VP-727xl
RS-485 PINOUT
G
_
B
+
A
Configuring the VP-727A Audio Switcher
VP-727T Side Panel
Figure 7: RS-485 Configuration between the VP-727A and the VP-727xl
6.4.2 Connecting the VP-727A to the VP-727T via the VP-727
To connect the VP-727A to the Kramer VP-727T Presentation Switcher
Control Panel via the RS-485 control port, as illustrated in the example in
Figure 8, do the following:
1. Connect the VP-727A to the VP-727 as follows:
Connect the “A” (+) PIN on the RS-485 rear panel port of the
VP-727A to the A (+) PIN on the RS-485 rear panel port of the
VP-727 unit
Connect the “B” (-) PIN on the RS-485 rear panel port of the VP-727A
to the B (-) PIN on the AUDIO CONTROL rear panel port of the
VP-727 unit
If shielded twisted pair cable is used, the shield may be connected to
the “G” (Ground) PIN on one of the units
14
KRAMER: SIMPLE CREATIVE TECHNOLOGY
Configuring the VP-727A Audio Switcher
2. Connect the VP-727 to the VP-727T as follows:
Connect the “A” (+) PIN on the RS-485 rear panel port of the VP-727
to the A (+) PIN on the RS-485 rear panel port of the VP-727T unit
Connect the “B” (-) PIN on the RS-485 rear panel port of the VP-727
to the B (-) PIN on the RS-485 rear panel port of the VP-727T unit
If shielded twisted pair cable is used, the shield may be connected to
the “G” (Ground) PIN on one of the units
3. Slide the underside RS-485 TERMINATION switch to ON.
VP-727A
VP-727
VP-727T Side Panel
RS-485 PINOUT
G
_
B
+
A
Figure 8: RS-485 Configuration between the VP-727A and the VP-727
15
Flash Memory Upgrade
7 Flash Memory Upgrade
The VP-727A firmware is located in FLASH memory, which lets you upgrade1
to the latest Kramer firmware version in minutes! The process involves:
Downloading from the Internet (see section 7.1)
Connecting the PC to the RS-232 port (see section 7.2)
Upgrading Firmware (see section 7.3)
7.1 Downloading from the Internet
You can download the up-to-date file2 from the Internet. To do so:
1. Go to our Web site at www.kramerelectronics.com and download the
file: “FLIP_VP727A.zip” from the Technical Support section.
2. Extract the file: “FLIP_VP727A.zip” to a folder (for example,
C:\Program Files\Kramer Flash).
3. Create a shortcut on your desktop to the file: “FLIP.EXE”.
7.2 Connecting the PC to the RS-232 Port
Before installing the latest Kramer firmware version on a VP-727A unit, do the
following:
1. Connect the RS-232 DB9 rear panel port according to section 6.2.
2. Slide the underside PROGRAM switch to ON (see section 4.1).
3. Switch the unit ON.
Note: this sequence is critical – first push the FLASH PROG button and then turn
on the unit
1 Upgrade should be carried out by skilled technical personnel. Failure to upgrade correctly will result in the malfunction of
the machine
2 The files indicated in this section are given as an example only. File names are liable to change from time to time
16
KRAMER: SIMPLE CREATIVE TECHNOLOGY
Flash Memory Upgrade
7.3 Upgrading Firmware
Follow these steps to upgrade the firmware:
1. Double click the desktop icon: “Shortcut to FLIP.EXE”.
The Splash screen appears as follows:
Figure 9: Splash Screen
2. After a few seconds, the Splash screen is replaced by the “Atmel – Flip”
window:
Figure 10: Atmel – Flip Window
3. Press the keyboard shortcut key F2 (or select the “Select” command
from the Device menu, or press the integrated circuit icon in the upper
right corner of the window).
The “Device Selection” window appears:
17
Flash Memory Upgrade
Figure 11: Device Selection Window
4. Click the button next to the name of the device and select from the list:
AT89C51RD2:
AT89C51RD 2
T89C5 1RD2
Figure 12: Selecting the Device Window
5. Click OK and select “Load Hex” from the File menu.
18
KRAMER: SIMPLE CREATIVE TECHNOLOGY
Flash Memory Upgrade
Figure 13: Loading the Hex
6. The Open File window opens. Select the correct HEX file that contains
the updated version of the firmware for VP-727A (for example
44M_V1p2.hex) and click Open.
7. Press the keyboard shortcut key F3 (or select the “Communication /
RS232” command from the Settings menu, or press the keys: Alt SCR).
The “RS232” window appears. Change the COM port according to the
configuration of your computer and select the 9600 baud rate:
Figure 14: RS-232 Window
8. Click Connect.
In the “Atmel – Flip” window, in the Operations Flow column, the Run
button is active, and the name of the chip appears as the name of the
third column: AT89C51RD2.
Verify that in the Buffer Information column, the
“HEX File: VP727A.hex” appears.
19
Flash Memory Upgrade
VP727A.hex
Figure 15: Atmel – Flip Window (Connected)
9. Click Run.
After each stage of the operation is completed, the check-box for that
stage becomes colored green1.
When the operation is completed, all 4 check-boxes will be colored
green and the status bar message: Memory Verify Pass appears2:
VP727A.hex
Figure 16: Atmel – Flip Window (Operation Completed)
10. Close the “ Atmel – Flip” window.
11. Disconnect the power on the VP-727A.
1 See also the blue progress indicator on the status bar
2 If an error message: “ Not Finished” shows, click Run again
20
KRAMER: SIMPLE CREATIVE TECHNOLOGY
Technical Specifications
12. If required, disconnect the RS-232 rear panel port on the VP-727A unit
from the Null-modem adapter.
13. Slide the underside PROGRAM switch to the right (see section
4.1).
14. Connect the power to the VP-727A.
Upon initialization, the new VP-727A software version shows in the
STATUS 7-segment Display.
8 Technical Specifications
Table 3 includes the technical specifications:
Table 3: Technical Specifications1 of the VP-727A Audio Switcher
INPUTS: 8 unbalanced stereo on RCA connectors
OUTPUTS: 1 Program and 1 Preview stereo unbalanced outputs on RCA connectors
MAX. OUTPUT LEVEL: >4.5Vpp
BANDWIDTH (-3dB): >22kHz
S/N RATIO: >85dB
CROSSTALK @1kHz
(all hostile):
CONTROLS: Preview level: <-72dB to 62dB in and out
COUPLING: AC, input and output
AUDIO THD + NOISE: Program: 0.02%; Preview: 0.002%;
AUDIO 2nd HARMONIC: Preview phones: 0.03%; Program phones: 0.04%; Program: 0.03%; Preview:
POWER SOURCE: 100-240 VAC, 50/60 Hz; 10VA
DIMENSIONS: 19-inch (W), 7-inch (D) 1U (H) rack-mountable
WEIGHT: 2.7kg (6lbs.) approx.
ACCESSORIES: Power cord, Null modem adapter, Windows®-based Kramer control
1 Program balanced output on a 5-pin terminal block connector
1 Headphone output on a 6.5mm jack
1 Program S/PDIF output on an RCA connector
Program: <-88dB
Preview: <-92dB
Balanced: <-88dB
Phones (Preview): <-82dB
Phones (Program): <-80dB
Program level: <-73dB to 45dB in and out
Program bass: 0dB to 27dB @100kHz
Program treble: 0dB to 11dB @10kHz
Program balance: -18dB to 0dB
Program balanced (+/-) level: <-80db to 47dB
Phones level (preview and program level): <-80dB to 57dB
Program phones: 0.034%; Preview phones: 0.018%
0.04%; Program balanced: 0.04%
2
software
1 Specifications are subject to change without notice
2 Check for the latest version on our Web site at http://www.kramerelectronics.com
21
Kramer VP-727A Protocol (Ver. 3.21)
9 Kramer VP-727A Protocol (Ver. 3.21)
A protocol for the VP-727A is described below.
For RS-232: A null-modem connection between the PC and the VP-727A is
required, and data is at 9600 baud (for standalone1), no parity, 8 data bits, and 1
stop bit.
For RS-485: A differential (2 wire) connection between the VP-727(xl) and the
VP-727A is required (A, B; GND may be connected to the shield if required).
All values shown are hexadecimal.
Table 4: Instruction Codes for the VP-727A Protocol
INSTRUCTION 1st Byte 2nd Byte 3rd Byte 4th Byte COMMENT
FACTORY RESET 00 81 81 81
RESET 00 80 80 81
INPUT 1 PROGRAM OUT 02 81 81 81
INPUT 2 PROGRAM OUT 02 82 81 81
INPUT 3 PROGRAM OUT 02 83 81 81 Select
INPUT 4 PROGRAM OUT 02 84 81 81 Input
INPUT 5 PROGRAM OUT 02 85 81 81 for
INPUT 6 PROGRAM OUT 02 86 81 81 Program
INPUT 7 PROGRAM OUT 02 87 81 81
INPUT 8 PROGRAM OUT 02 88 81 81 See NOTE 1
READ PROGRAM INPUT # 06 81 80 81 See NOTE 3
INPUT 1 PREVIEW OUT 02 81 82 81
INPUT 2 PREVIEW OUT 02 82 82 81
INPUT 3 PREVIEW OUT 02 83 82 81 Select
INPUT 4 PREVIEW OUT 02 84 82 81 Input
INPUT 5 PREVIEW OUT 02 85 82 81 For
INPUT 6 PREVIEW OUT 02 86 82 81 Preview
INPUT 7 PREVIEW OUT 02 87 82 81
INPUT 8 PREVIEW OUT 02 88 82 81 See NOTE 1
READ PREVIEW INPUT # 06 82 80 81 See NOTE 3
SET TAKE TRANSITION
SPEED
07 81 80 81
See NOTE 1
1 38,400 buad when operating with the VP-727xl and 115,200 baud when operating with the VP-727
22
KRAMER: SIMPLE CREATIVE TECHNOLOGY
Kramer VP-727A Protocol (Ver. 3.21)
INSTRUCTION 1st Byte 2nd Byte 3rd Byte 4th Byte COMMENT
PROGRAM INPUT 1 LEVEL 16 81 80 + Value 81
PROGRAM INPUT 2 LEVEL 16 82 80 + Value 81
PROGRAM INPUT 3 LEVEL 16 83 80 + Value 81
PROGRAM INPUT 4 LEVEL 16 84 80 + Value 81
PROGRAM INPUT 5 LEVEL 16 85 80 + Value 81
PROGRAM INPUT 6 LEVEL 16 86 80 + Value 81
PROGRAM INPUT 7 LEVEL 16 87 80 + Value 81
PROGRAM INPUT 8 LEVEL 16 88 80 + Value 81
READ PROGRAM INPUT 1
LEVEL
READ PROGRAM INPUT 2
LEVEL
READ PROGRAM INPUT 3
LEVEL
READ PROGRAM INPUT 4
LEVEL
READ PROGRAM INPUT 5
LEVEL
READ PROGRAM INPUT 6
LEVEL
READ PROGRAM INPUT 7
LEVEL
READ PROGRAM INPUT 8
LEVEL
PREVIEW INPUT 1 LEVEL 16 91 80 + Value 81
PREVIEW INPUT 2 LEVEL 16 92 80 + Value 81
PREVIEW INPUT 3 LEVEL 16 93 80 + Value 81
PREVIEW INPUT 4 LEVEL 16 94 80 + Value 81
PREVIEW INPUT 5 LEVEL 16 95 80 + Value 81
PREVIEW INPUT 6 LEVEL 16 96 80 + Value 81
PREVIEW INPUT 7 LEVEL 16 97 80 + Value 81
PREVIEW INPUT 8 LEVEL 16 98 80 + Value 81
19 81 80 81
19 82 80 81
19 83 80 81
19 84 80 81
19 85 80 81
19 86 80 81
19 87 80 81
19 88 80 81
See NOTE 1
See NOTE 3
See NOTE 1
23
Kramer VP-727A Protocol (Ver. 3.21)
INSTRUCTION 1st Byte 2nd Byte 3rd Byte 4th Byte COMMENT
READ PREVIEW INPUT 1
LEVEL
READ PREVIEW INPUT 2
LEVEL
READ PREVIEW INPUT 3
LEVEL
READ PREVIEW INPUT 4
LEVEL
READ PREVIEW INPUT 5
LEVEL
READ PREVIEW INPUT 6
LEVEL
READ PREVIEW INPUT 7
LEVEL
READ PREVIEW INPUT 8
LEVEL
PROGRAM OUTPUT LEVEL 16 A1 80 + Value 81
PREVIEW OUTPUT LEVEL 16 A2 80 + Value 81
HEADPHONE OUTPUT
LEVEL
READ PROGRAM OUTPUT
LEVEL
READ PREVIEW OUTPUT
LEVEL
READ HEADPHONE OUTPUT
LEVEL
BASS 16 B1 80 + Value 81
TREBLE 16 B2 80 + Value 81
BALANCE 16 B3 80 + Value 81
PROGRAM INPUT 1 DELAY 16 C1 80 + Value 81
PROGRAM INPUT 2 DELAY 16 C2 80 + Value 81
PROGRAM INPUT 3 DELAY 16 C3 80 + Value 81
PROGRAM INPUT 4 DELAY 16 C4 80 + Value 81
PROGRAM INPUT 5 DELAY 16 C5 80 + Value 81
PROGRAM INPUT 6 DELAY 16 C6 80 + Value 81
PROGRAM INPUT 7 DELAY 16 C7 80 + Value 81
PROGRAM INPUT 8 DELAY 16 C8 80 + Value 81
19 91 80 81
19 92 80 81
19 93 80 81
19 94 80 81
19 95 80 81
19 96 80 81
19 97 80 81
19 98 80 81
16 A3 80 + Value 81
19 A1 80 81
19 A2 80 81
19 A3 80 81
See NOTE 3
See NOTE 1
See NOTE 3
See NOTE 1
24
KRAMER: SIMPLE CREATIVE TECHNOLOGY
Kramer VP-727A Protocol (Ver. 3.21)
INSTRUCTION 1st Byte 2nd Byte 3rd Byte 4th Byte COMMENT
READ BASS 19 B1 80 81
READ TREBLE 19 B2 80 81
READ BALANCE 19 B3 80 81
READ PROGRAM INPUT 1
DELAY
READ PROGRAM INPUT 2
DELAY
READ PROGRAM INPUT 3
DELAY
READ PROGRAM INPUT 4
DELAY
READ PROGRAM INPUT 5
DELAY
READ PROGRAM INPUT 6
DELAY
READ PROGRAM INPUT 7
DELAY
READ PROGRAM INPUT 8
DELAY
AFV 08 80 80 81
BREAKAWAY 08 80 81 81
READ AFV / BREAKAWAY
STATUS
FADE ON 20 80 81 81 See NOTE 1
FADE OFF 20 80 80 81 See NOTE 1
READ FADE STATUS 21 80 80 81 See NOTE 3
TAKE 3A 80 81 81 See NOTE 1
TAKE INSTRUCTION
COMPLETE
CANCEL TAKE 3A 80 80 81
IDENTIFY MACHINE 3D 81 80 81 See NOTE 5
IDENTIFY FIRMWARE VERS. 3D 83 80 81 See NOTE 6
STORE SETUP 13 80+SETUP 80 81
ERASE STORED SETUP 13 80+SETUP 81 81
RECALL SETUP 14 80+SETUP 80 81 See NOTE 1
IS SETUP DEFINED? 0D 80+SETUP 80 81 See NOTE 3
LOCK 1E 81 80 81 Lock panel
UNLOCK 1E 80 80 81 Unlock panel
READ LOCK STATUS 1F 80 80 81 See NOTE 3
19 C1 80 81
19 C2 80 81
19 C3 80 81
19 C4 80 81
19 C5 80 81
19 C6 80 81
19 C7 80 81
19 C8 80 81
0B 80 80 81 See NOTE 3
3A 81 81 81 See NOTE 4
See NOTE 3
See NOTE 1
See NOTE 1
See NOTE 1
See NOTE 1
25
Kramer VP-727A Protocol (Ver. 3.21)
INSTRUCTION 1st Byte 2nd Byte 3rd Byte 4th Byte COMMENT
T-BAR POSITION 23 80 80+Value 81 Value 0~112
HEADPHONE SOURCE
24 80 80 81
PREVIEW
HEADPHONE SOURCE
24 80 81 81
PROGRAM
READ HEADPHONE SOURCE 25 80 80 81 See NOTE 3
SEND CHANGED AUDIO
3F 80 81 81 See NOTE 7
PARAMETER INSTRUCTION
NOTES on the above table:
NOTE 1:
The reply to these instructions is:
- 1st byte: 0x40 + 1st byte sent
- 2nd byte: Same as 2nd byte sent
- 3rd byte: Same as 3rd byte sent
- 4th byte: Same as 4th byte sent
Example:
1st byte 2nd byte 3rd byte 4th byte
Send 0x02 0x81 0x81 0x81
Reply 0x42 0x81 0x81 0x81
NOTE 2:
In the case of an error, the reply code will be:
- 1st byte: 0x50
- 2nd, 3rd and 4th byte – don’t care
NOTE 3:
The reply to these READ commands is:
- 1st byte: 0x40 + 1st byte sent
- 2nd byte: Same as the data that was sent
- 3rd byte: Requested data (as defined by the command which sets this parameter)
- 4th byte: 0x81
Example:
Read Preview Input 3 Level. The reply in this case tells us that the level is 0x17
1st byte 2nd byte 3rd byte 4th byte
Send 0x19 0x93 0x80 0x81
Reply 0x59 0x93 0x97 0x81
Example:
Read Program Input #. The reply in this case tells us that the Input 4 is connected to the Program output
1st byte 2nd byte 3rd byte 4th byte
Send 0x06 0x81 0x80 0x81
Reply 0x46 0x81 0x84 0x81
NOTE 4:
In the case where the VP-727A is in “ FADE” mode (ie, not “ CUT” mode), it will send this command via RS-232 after it has
completed the transition.
See NOTE 1
See NOTE 1
26
KRAMER: SIMPLE CREATIVE TECHNOLOGY
Kramer VP-727A Protocol (Ver. 3.21)
NOTE 5:
The reply to the Identify Machine command shows the machine name
- 1st byte: 0x7d
- 2nd byte: 0x80 + 0x07 (7 dec)
- 3rd byte: 0x80 + 0x1b (27 dec)
- 4th byte: 0x81
NOTE 6:
The reply to the Identify Firmware command shows the firmware version as
- 1st byte: 0x7d
- 2nd byte: 0x80 + the version number prior to decimal point
- 3rd byte: 0x80 + the version number following the decimal point
- 4th byte: 0x81
For example, for version 3.5, the reply would be 0x7d, 0x83, 0x85, 0x81.
NOTE 7:
If any parameter was changed the VP-727A replies with the changed parameter instruction.
For example if the Program Source was changed to 3, the machine replies 0x42 0x83 0x81 0x81.
If there were no changed parameters, the VP-727A replies 0x7f 0x80 0x80 0x81
27
LIMI TED WA RRANTY
Except as below, this warranty covers all defects in materia l or workmanship in this product . The following are not covered
uncertain as to whether a dealer is authorized, please contact Kramer at one of the agents listed in the Web site
initial technical adjustments (set-up), including adjustment of user controls or programming. These costs are the
implied warranty lasts and/or do not allow the exclusion or limitation of incidental or consequential damages, so the above
Kramer Electronics (hereafter ) warrants this product free from defects in material and workmanship under the
following terms.
HOW LONG IS THE WA RRANTY
Labor and parts are warranted for seven years from the date of the first customer purchase.
WHO IS PROTECT ED?
Only the first purchase customer may enforce this warranty.
WHAT I S CO VERED AND WHAT IS NOT COVERED
Kramer
by the warranty:
1. Any product which is not distributed by Kramer, or which is not purchased from an authorized Kramer dealer. If you are
www.kramerelectronics.com.
2. Any product, on which the serial number has been defaced, modified or removed, or on which the WARRANTY VOID
TAMPERED sticker has been torn,
IF reattached, removed or otherwise interfered with.
3. Damage, deterioration or malfunction resulting from:
i) Accident, misuse, abuse, neglect, fire, water, lightning or other acts of nature
ii) Product modification, or failure to follow instructions supplied with the product
iii) Repair or attempted repair b y anyone not authorized by Kramer
iv) Any shipment of the product (claims must be presented to the carrier)
v) Removal or installation of the product
vi) Any other cause, which does not relate to a product defect
vii) Cartons, equipment enclosures, cables or accessories used in conjunction with the product
WHAT WE WILL PAY FO R AND WHAT WE WILL NOT PAY FOR
We will pay labor and material expenses for covered items. We will not pay for the following:
1. Removal or i nstallations charges.
2. Costs of
responsibility of the Kramer dealer from whom the p roduct was p urchased.
3. Shipping charges.
HOW YOU CAN G ET WARRANTY SERVIC E
1. To obtain service on you product, you must take or ship it prepaid to any authorized Kramer service center.
2. Whenever warranty service is required, the original dated invoice (or a copy) must be presented as proof of warranty
coverage, and should be included in any shipment of the product. Please also include in any mailing a contact name,
company, address, and a description of the problem(s).
3. For the name of the nearest Kramer authorized service center, consult your authorized dealer.
LIMI TATION OF I MPLIED WARRAN TIES
All implied warranties, including warranties of merchantability and fitness for a particular purpose, are limited in duration to
the length of this warranty.
EXCLUSIO N OF DAMAGES
The liability of Kramer for any effective products is limited to the repair or replacement of the product at our option. Kramer shall
not be liable for:
1. Damage to other property caused by defects in this product, damages based upon inconvenience, loss of use of the product, loss
of time, commercial loss; or:
2. Any other damages, whether incidental, consequential or otherwise. Some countries may not allow limitations on how long an
limitations an d exclusions may not apply to you.
This warranty gives you specific legal rights, and you may also have ot her rights, which vary from place to place.
All p roducts returned to Kramer for service must have prior approval. This may be obtained from your dealer.
NOTE:
This equipment has been t ested to d etermine compliance with the requirements of:
EN-50081: "Electromagnetic compatibility (EMC);
Residential, commercial and light industry"
EN-50082: "Electromagnetic compatibility (EMC) generic immunity standard.
CFR-47: FCC* Rules and Regulations:
CAUTI ON!
generic emission standard.
Part 1:
Part 1: Residential, commercial and light industry environment".
Part 15: “ Radio frequency devices
Subpart B Unintentional radiators”
Servicing the machines can only be done by an authorized Kramer technician. Any user who makes changes or
modifications to the unit without t he expressed approval of the manufacturer will void user authority to o perate the
equipment.
Use the supplied DC power supply to feed power to the machine.
Please use recommended interconnection cables to connect the machine to other components.
* FCC and CE approved using STP cable (for twisted pair products)
28
KRAMER: SIMPLE CREATIVE TECHNOLOGY
For the latest information on our products and a list of Kramer
distributors, visit our Web site: www.kramerelectronics.com,
where updates to this user manual may be found.
We welcome your questions, comments and feedback.
Safety Warning:
Disconnect the unit from the power supply before
opening/servicing.
Caution
Kramer Electronics, Ltd.
Web site: www.kramerelectronics.com
E-mail: info@kramerel.com
P/N: 2900-000249 REV 2
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