CRYSTALVIEW INSTALLATION AND OPERATIONS MANUAL
11
Step 1 – Setting the cable length jumpers/switch
(PC, SUN, PC-Serial/Audio models. See Figure 5.)
There are three jumpers labeled JP3, JP4, and JP5, located on the
Remote Units PCB. These three jumpers set the correct level of
video equalization for different cable lengths. Jumpers JP3, JP4,
and JP5 are all factory set to a default of 0 – 300 feet. For cable
lengths less than 300 feet, no jumper setting changes should be
needed.
For cable lengths over 300 feet these jumpers may need to be set to
compensate for the longer cable length. To set these jumpers, first
carefully remove the Remote Units case by unscrewing the two side
screws and the top screw and lift off the top case exposing the
CrystalViews PCB. Orient the PCB with the cable connections
away from you and the front panel towards you. Set jumpers JP3,
JP4, and JP5 depending on the CAT-5 cable length between the
Remote Unit and the Local Unit as show in Figure 5.
If you are unsure about opening the case and setting the jumpers,
please consult technical support at Rose Electronics.
TIP: If you are using a CAT-5 cable that is close to the top end of
the cable length range and a video resolution of 1024 x 768 or
higher, you may achieve better video quality by selecting the jumper
settings for the next higher cable length range. For example, if your
CAT-5 cable length is 250 feet, you might achieve better video
quality if you set jumpers JP3, JP4, and JP5 to the 301 – 600
setting.
(PC-Serial/Audio model only. See Figure 5.)
If you are using a non-powered microphone on the Remote Unit,
install the “MIC” jumper on the daughterboard. This provides
additional amplification.
(MINI model See Figure 5.)
The CrystalView MINI model has two Dipswitches located on the
bottom of the Remote Unit. Set Dipswitch 1 according to the CAT-5
cable length used between the Local Unit and the Remote Unit.
Maximum cable length for the CrystalView MINI is 150 feet. For
normal scroll lock key operation set Dipswitch 2 to “ON”.
DO NOT
INSTALL T
HE “MIC” JUMPER IF USING A
POWERED MICROPHONE.