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PAN TILT ZOOM TELEMETRY RECEIVER
USER MANUAL
Revision 4.05 –26 October 1999
Page 2
1. INTRODUCTION ....................................................................................................................................................... 3
2. CONNECTIONS.......................................................................................................................................................... 3
5. RESTORING DEFAULT PARAMETERS................................................................................................................ 9
IMPORTANT SAFETY INFORMATION
This equipment uses a mains supply voltage which can be lethal if correct safety procedures are not adhered to.
This equipment must be earthed.
Depressing the test switch can cause the Pan / Tilt unit connected to this equipment to move. Ensure that such movement will not endanger people or equipment.
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1. INTRODUCTION
The Betatech pan tilt zoom (PTZ) telemetry receiver allows for the control of pan tilt (PT) heads and zoom lenses via a serial RS 485 data link.
The PTZ receiver consists of two printed circuit boards, a main control board (bottom) and a PT head interface board (top). The PT interface board is available in AC and DC versions, allowing for the control of virtually all PT head types.
2. CONNECTIONS
Great care must be taken in the connection of the PTZ telemetry receiver. There are many connections, which, if erroneously connected, could cause severe damage to the PTZ telemetry receiver, the PT head and the lens. Double check all connections before switching on the mains power.
Fig 1 shows the general layout of the PTZ receiver circuit board.
Connection of the PTZ telemetry unit is as follows:
• The PTZ receiver is mains powered. With reference to Fig 3, connect the 220 VAC to the screw terminals marked “220 VAC LIVE IN”, “220
VAC NEUTRAL IN” and “EARTH IN” on the PTZ driver board. Note that these connections are not marked on the DC driver board. Should it be necessary to operate the PTZ telemetry receiver from a different supply voltage, please contact your nearest Betatech dealer for further information.
• For use with an AC PTZ head ensure that the AC driver board is installed. This board is labeled “PTZ AC DRIVER”.
1. If the PT head is 220 VAC powered, connect JP1 “220 VAC FUSED LIVE OUT” and “220 VAC FUSED NEUTRAL OUT” to
JP2 “AC1 PAN, TILT AND AUX 1&2 LIVE FEED” and “AC1 PAN, TILT AND AUX 1&2 NEUTRAL FEED”.
2. If the PT head is 24 VAC powered, connect JP1 “24 VAC LIVE OUT” and “24 VAC NEUTRAL OUT” to JP2 “AC1 PAN, TILT
AND AUX 1&2 LIVE FEED” and “AC1 PAN, TILT AND AUX 1&2 NEUTRAL FEED”.
3. Should auxiliary outputs 2 and 3 be required, connect the required voltage feed (either 220 VAC or 24 VAC) from JP1 to the AC2 feed. Note that this circuit is independent of AC1. It is therefore possible to power the AC1 circuit with a different AC voltage to
AC2.
4. Connect the pan and tilt motors to the connections shown in Fig 3.
• For use with a DC PTZ head ensure that a DC driver board is installed. This board is labeled “PTZ DC DRIVER” as shown in Fig 3.
Connect the pan and tilt motors to the connections shown in Fig 3.
• Connect the lens to the connections shown in Fig 2. Ensure that the lens polarity is correct so that the lens function directions are not reversed.
If an auto-iris lens is used, no iris connection to the PTZ telemetry is required, the auto iris control signals are generated by the camera and must be connected as described in the camera / zoom lens technical literature.
• Connect the RS485 communications to the “RS485+”, “RS485-“ and “GROUND” connections shown in Fig 2. Ensure that the polarity is correct. The RS485 connections are internally protected against limited overvoltages. In areas where there is a high risk of lightning, such as when the unit is used outdoors with long cable runs, it is recommended that additional external RS485 lightning protection devices are installed.
• Should preset positioning be required, connect the lens and pan tilt head feedback potentiometers to the relevant connections on the PTZ telemetry RX. It is essential that the feedback pots are connected to provide position reference voltages which increase when the PT telemetry provides an increasing control signal. Feedback voltages must be as follows:
∗ Increasing for pan right, decreasing for pan left
∗ Increasing for tilt up, decreasing for tilt down
∗ Increasing for zoom in, decreasing for zoom out
∗ Increasing for focus near, decreasing for focus far
∗ Increasing for iris open, decreasing for iris close
The “FB VREF+” and “GND” (GROUND REFERENCE x FOR PRESETS) connections provide the excitation voltage which must be connected across the feedback potentiometer. The potentiometer wiper then provides a voltage which is proportional to the position of the lens
/ pan / tilt. The wiper for each function must be connected to the FEEDBACK input on the bottom board connections as shown in figure 2.
Note that two separate excitation signals are provided. These are internally connected and the dual connections allow for one reference connection to the pan / tilt head and one to the lens.
• External Betatech devices, which utilise the Philips I 2 C protocol, may be connected to the I 2 C interface connector. This allows for the connection of additional alarm inputs, auxiliary outputs and local keyboard control.
2.1. Configuration for Auto-Pan
Should the system be required to operate in auto-pan mode, it is necessary to tie the input marked as “TAMPERSW” to “GROUND”. In this mode
Auxiliary output 1 cannot be operated by means of the Aux 1 control on the PCK. When operating Aux 5 (AutoPan), the Aux 1 output will be activated. When Aux 5 is toggled off, or any pan operation is initiated, the system will exit auto-pan mode. Aux 1 must be connected to the autopan input of the Pan Tilt head.
Note that when configured for auto-pan, the operation of the aux 1 output is limited in test mode to prevent driving the pan motor and aux 1 output simultaneously.
CHECK ALL CONNECTIONS AGAIN BEFORE SWITCHING ON!!
2.1. Alarm Preset Recall
Alarms may be handled by attaching an I2C input unit (set to address zero) to the PTZ. A contact closure on inputs 1 to 16 will cause preset position
1 to 15 to be recalled.
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If input 16 is tied active, then contact opening on inputs 1 to 15 will cause preset positions 1 to 15 to be recalled.
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FIGURE 1 - GENERAL LAYOUT
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PAN AND TILT LEDS
DIP SWITCH 1
DIP SWITCH 2
DC PAN TILT AND AUX CONNECTIONS
MAIN STATUS LED
TEST SWITCHES 1 AND 2
PAN AND TILT BRAKE / AUX 1 AND AUX 2 LEDS
AUX 3 AND AUX 4 LEDS
AUX 3 AND AUX CONNECTIONS
BOTTOM PCB CONNECTIONS
MAINS IN AND OUT CONNECTIONS
F1 FUSE 5X20MM 4A SLO BLOW
F1 FUSE 5X20MM 1A SLO BLOW
TRANSFORMER CONNECTIONS
BOTTOM BOARD - CPU LED
PAN TILT ZOOM LEDS
EARTHING WIRE AND LUG - DO NOT REMOVE
PAN AND TILT LEDS
DIP SWITCH 1
DIP SWITCH 2
PAN TILT AND AUX 1 CONNECTIONS
I2C CONNECTIONS
MAIN STATUS LED
TEST SWITCHES 1 AND 2
MAINS IN AND OUT CONNECTIONS
BOTTOM PCB CONNECTIONS
F1 FUSE 5X20MM 1A SLO BLOW
F2 FUSE 5X20MM 5A SLO BLOW
ZOOM FOCUS IRIS LEDS
EARTHING WIRE AND LUG - DO NOT REMOVE
TRANSFORMER CONNECTIONS
BOTTOM BOARD - CPU LED
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POSITIVE VOLTAGE REFERENCE 1 FOR PRESETS
TILT FEEDBACK VOLTAGE FOR PRESETS
POSITIVE VOLTAGE REFERENCE 2 FOR PRESETS
PAN FEEDBACK VOLTAGE FOR PRESETS
GROUND REFERENCE 1 FOR PRESETS
IRIS FEEDBACK VOLTAGE FOR PRESETS
GROUND REFERENCE 2 FOR PRESETS
FOCUS FEEDBACK VOLTAGE FOR PRESETS
TAMPER SWITCH
ZOOM FEEDBACK VOLTAGE FOR PRESETS
TAMPER SW GROUND RETURN
RS485+ COMMS
GROUND
RS485- COMMS
IRIS MOTOR +
IRIS MOTOR -
FOCUS MOTOR +
FOCUS MOTOR -
ZOOM MOTOR +
ZOOM MOTOR -
FIGURE 2 - CONNECTIONS TO BOTTOM PCB AC AND DC
NOTE CONNECTIONS ON BOTTOM
BOARD ARE THE SAME FOR BOTH
AC AND DC DRIVER BOARD
CONFIGURATIONS
POSITIVE VOLTAGE REFERENCE 1 FOR PRESETS
TILT FEEDBACK VOLTAGE FOR PRESETS
POSITIVE VOLTAGE REFERENCE 2 FOR PRESETS
PAN FEEDBACK VOLTAGE FOR PRESETS
GROUND REFERENCE 1 FOR PRESETS
IRIS FEEDBACK VOLTAGE FOR PRESETS
GROUND REFERENCE 2 FOR PRESETS
FOCUS FEEDBACK VOLTAGE FOR PRESETS
TAMPER SWITCH
ZOOM FEEDBACK VOLTAGE FOR PRESETS
TAMPER SW GROUND RETURN
RS485+ COMMS
GROUND
RS485- COMMS
IRIS MOTOR +
IRIS MOTOR -
FOCUS MOTOR +
FOCUS MOTOR -
ZOOM MOTOR +
ZOOM MOTOR -
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PAN MOTOR -
PAN MOTOR +
TILT MOTOR -
TILT MOTOR+-
PAN BRAKE -
PAN BRAKE +
TILT BRAKE -
TILT BRAKE +
POSITIVE 12/24 VDC
AUX OUTPUT 1
POSITIVE 12/24 VDC
AUX OUTPUT 2
AC AUX 3 AND 4 NEUTRAL FEED
AC AUX 3 AND 4 LIVE FEED
AUX 4 LIVE
AUX 4 NEUTRAL
AUX 3 LIVE
AUX 3 NEUTRAL
220 VAC LIVE IN
220 VAC NEUTRAL IN
220 VAC FUSED LIVE OUT
220 VAC NEUTRAL OUT
EARTH TO CHASSIS
18 VAC LIVE OUT
18 VAC NEUTRAL OUT
FIGURE 3 - CONNECTIONS TO TOP PCB AC AND DC
AC1 TILT UP MOTOR NEUTRAL
AC1 TILT UP MOTOR LIVE
AC1 TILT DOWN MOTOR NEUTRAL
AC1 TILT DOWN MOTOR LIVE
AC1 PAN LEFT MOTOR NEUTRAL
AC1 PAN LEFT MOTOR LIVE
AC1 PAN RIGHT MOTOR NEUTRAL
AC1 PAN RIGHT MOTOR LIVE
AC1 AUX 1 NEUTRAL
AC1 AUX 1 LIVE
AC1 PAN, TILT AND AUX 1 & 2 NEUTRAL FEED
AC1 PAN, TILT AND AUX 1 & 2 LIVE FEED
EARTH
EARTH
EARTH
EARTH
AC2 AUX 2 NEUTRAL
AC2 AUX 2 LIVE
AC2 AUX3 NEUTRAL
AC2 AUX3 LIVE
AC2 AUX 2 & 3 NEUTRAL FEED
AC2 AUX 2 & 3 LIVE FEED
220 VAC LIVE IN
220 VAC NEUTRAL IN
220 VAC FUSED LIVE OUT
220 VAC NEUTRAL OUT
EARTH TO CHASSIS
EARTH IN
24 VAC LIVE OUT
24 VAC NEUTRAL OUT
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3. EXCLUSION ZONES
It is possible to set up exclusion zones, into which the PTZ may not be directed. In order for this feature to be available, the PTZ MUST be equipped with feedback potentiometers on pan and tilt. Eight exclusion zones are available.
When auxiliary output 63 is switched on, the exclusion zones are overridden and the PTZ may be freely pointed to any direction. Turning the auxiliary output off, once again limits PTZ movement. Note that when the PTZ is first switched on, the PTZ is excluded from pointing into the specified areas.
Setting up of the exclusion zones is carried out as follows:
• Turn on auxiliary output 64.
• Set two opposite corners for the zone(/s).
• Turn off auxiliary output 64.
While in setup mode the exclusion zones are set up by storing and recalling preset positions. The following table describes the operation for storing / recalling certain positions:
7
8
5
6
Zone
Number
1
2
3
4
Clear
Zone
Store 11
Store 12
Store 13
Store 14
Store 15
Store 16
Store 17
Store 18
Set / Recall
Top Left
Pos 21
Pos 22
Pos 23
Pos 24
Pos 25
Pos 26
Pos 27
Pos 28
Set / Recall
Bottom Left
Pos 31
Pos 32
Pos 33
Pos 34
Pos 35
Pos 36
Pos 37
Pos 38
Set / Recall
Top Right
Pos 41
Pos 42
Pos 43
Pos 44
Pos 45
Pos 46
Pos 47
Pos 48
Set / Recall
Bottom Right
Pos 51
Pos 52
Pos 53
Pos 54
Pos 55
Pos 56
Pos 57
Pos 58
4. SWITCH SETTINGS
4.1. Address Selection
Set DIP switch 1, switches 1 to 7 to the required address of the PTZ. This would usually match the camera number in the system. The actual switch setting is the binary representation of the address. The following table shows the first few addresses:
Switch 1 / 8, marked “6/12V
Lens” must be set to “on” for a 6 or 8 volt lens or “off” for a 12 volt lens.
Address
Switch
Legend
1
2
3
…
127
SW 1/7 SW 1/6 SW 1/5 SW 1/4 SW 1/3 SW 1/2 SW 1/1
Address 6 Address 5 Address 4 Address 3 Address 2 Address 1 Address 0 off off off
On
Off
Off
Off
On off off off
On off off off
On off off off
On off on on
On on off on
On
4.2. Baud Rate Selection
DIP switch 2 is used for baud rate selection. Set Switch 2/1 and 2/2 and 2/3 to match the baud rate of the device which generates the PTZ control data as follows:
* = > Indicates the default setting of 19.2 KBaud
The software automatically detects either an AC or DC driver board.
Switch 2/4 (marked “8/9 bit”) is used to set the unit to operate with different serial communication protocols. For normal operation with Betatech control equipment, this switch should be “off”.
Baud Rate
600 baud
1200 baud
2400 baud
4800 baud
9600 baud
19.2 K baud *
57.6 K baud
57.6 Kbaud
SW2/3
(BAUD C) off off off off on on on on
SW2/2
(BAUD B) off off on on off off on on
SW 2/1
(BAUD A) off on off on off on off on
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5. RESTORING DEFAULT PARAMETERS
The PTZ telemetry receiver stores many parameters internally. Should it be necessary to restore these values to the default factory settings, the following procedure should be followed. Note that the default values loaded, may be modified by setting the address switch prior to restoring defaults.
• Switch the power to the PTZ telemetry receiver off.
• Set the address DIP switch for the required default settings
• Hold down both test buttons (located on the AC or DC driver board). While holding the buttons down, switch the power to the PTZ telemetry receiver on. The power / indication LED will come on briefly and then go off for about 1 second. The factory default settings will have been restored. Note that the existing preset positions which are stored in the unit will be unchanged after this procedure.
• Set the DIP switch to the required PTZ address.
The following table indicates the functions of the address DIP switch when the defaults are restored.
Switch
Position
S1/8
S1/7
S1/6
Off (Default) On Function
15 seconds
Slow. The PTZ will start decelerating further away from the preset position.
Slow
60 seconds
Fast. The PTZ will start decelerating closer to the preset position.
Fast
Sets the maximum time which the PTZ will search for a preset position. If the position is not found after this period, the PTZ will automatically stop.
Sets the reduction in speed when the PTZ approaches preset positions.
Sets the rate of increase in speed when the PTZ is controlled via a fixed speed controller.
Off
On
On
On
On
S1/5
Off
Off
Off
On
Off
Off
On
On
S1/4 S1/3
Off Off
Off
On
On
Off
On
Off
On
Off
On
8%
10%
16%
35%
55%
Minimum Pan / Tilt speed when approaching preset position
25%
4%
6%
6. SYSTEM TESTS
To enter test mode press test switch
2. Pressing the test switch repeatedly causes the unit to cycle through various test modes as follows:
Test
Mode
POWER / STATUS LED Function
0 On, flashes briefly when serial message is received Normal operation
If, during a test, the TEST 1 button is pressed, the current test will pause at the current step. Pressing the TEST 1 button will cause the test to advance to the next step.
The PTZ telemetry receiver will automatically be returned to normal operating mode when any valid serial message is received. Alternatively it is necessary to cycle through all test modes (using the TEST 2) switch, until the power / status LED indicates that the PTZ is out of test mode.
1
2
3
4
5
Flashes off briefly once per second
Flashes off briefly twice per second
Flashes off briefly 3 times per second
Flashes off briefly 4 times per second
Flashes off briefly 5 times per second
On completion of the tests ensure that the unit is returned to normal operating mode.
Cycle through all functions individually
Toggle all functions simultaneously
DC variable speed test as per “1”
DC variable speed as per “2”
Cycle through all aux outputs
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