Power Up Operation; Local Test Operation; Additional Functions; Dither - Bosch LTC 8561 Series Instruction Manual

LTC 8561 | Instruction Manual | Local Test Operation

4.27 Power Up Operation

CAUTION: The receiver/driver performs a
calibration test which operates the pan/tilt and
zoom lens motors when AC power is first
applied to the unit. Ensure that movement of
the pan/tilt during this power-on test will not
cause damage or create a hazardous condition
before applying AC power to the unit.
It is important to have both the pan/tilt and zoom lens
wiring connected to the receiver/driver before AC
power is applied to the unit. This includes pre-position
wiring if the pan/tilt and zoom units are equipped with
this option. The power-on calibration test is used to
determine if the pan/tilt and zoom lens is equipped
with the pre-position option. The receiver/driver also
automatically adapts to the polarity used to connect
the pre-position sensor voltage supplies. If the pre-
position feedback signals are not detected during this
test, subsequent pre-position commands received from
the control site during normal operations are ignored.
If it is necessary to prevent movement of the
pan/tilt/zoom at this time, the calibration test may be
bypassed by pressing the local test button while
applying the AC power.
5

LOCAL TEST OPERATION

In order to simplify installation and testing, a Local
Test push button is provided so the receiver/driver can
be checked without having to receive commands from
the system. Locate the four digit thumbwheel switch,
ADDRESS, and the small test push button switch next
to the thumbwheel switch, LOCAL TEST, on the main
printed circuit board. Follow these steps:
1. Note the location address that may be on the
thumbwheel switches. This number should be
written down so it can be reentered when
finished with the local test procedure.
2. From the table below, enter the desired number
of the function you wish to test, using the digital
thumbwheel switches.
3. Push the local test push button to activate test as
selected.
4. Release push button and repeat steps 2 and 3 if
additional tests are desired.
5. Be sure to set the thumbwheel switches back to
their original address number so that this device
can be properly activated by the system.
Bosch Security Systems | January 19, 2006
Thumbwheel No.
0000
0001
0002
0003
0004
0005
0006
0007
0008
0009
0010
0011
0012
0013
0014
0015
0016
0017
0018
0019
0020
0021
0022
0023
0024
0025
0026
0101–0199
0201–0299
9999
NOTE that these tests may be done at an electronics
workbench to test the receiver/driver, as well as the
pan/tilt device prior to installation. However, since
most installations require field cabling, this procedure
is also useful to the field installer.
6

ADDITIONAL FUNCTIONS

6.1

Dither

Since low light level cameras may be prone to image
burning, this unit has a function, called Dither, which
moves the pan head right and left automatically.
Approximately every two minutes, if the unit has not
been accessed for a function, the pan head is moved
for 0.5 second, always reversing from its last dither so
the same scene is maintained.
This function is controlled from the system keyboard
by using the auxiliary 5 command. Auxiliary 5 ON
activates the function while auxiliary 5 OFF
deactivates it. Immediately upon activation of dither,
the pan motor goes through the dither movements to
indicate that dither has been activated.
EN | 15
Function
Calibration Test / Reset
Pan Right
Pan Left
Tilt Down
Tilt Up
Zoom Out
Zoom In
Focus Near
Focus Far
Iris Close
Iris Open
Aux 1 ON
Aux 1 OFF
Aux 2 ON
Aux 2 OFF
Aux 3 ON
Aux 3 OFF
Aux 4 ON
Aux 4 OFF
Aux 5 ON
Aux 5 OFF
Aux 6 ON
Aux 6 OFF
Aux 7 ON
Aux 7 OFF
Aux 8 ON
Aux 8 OFF
Shot Pre-position 1–99
Set Pre-position 1–99
Clear All Pre-positions