5
4
CONNECTING THE VLR-100
4.1 Connecting Power
Included with your VLR-100 is an AC power adapter that provides a 9 volt, 500 milliamperes DC output. This adapter is
equipped with a miniature phone plug with the "+" (positive) voltage output connected to the front tip of the plug.
Insert the power plug into the "+9V DC" rear panel connector and plug the adapter into 110-120 volt, 60-Hz AC power.
WARNING:
ELECTRICALLY OPERATED PRODUCT
As with all electrical products, precautions should be observed during handling and use to prevent electrical shock.
NOTE:
Make sure the plug is inserted all the way into the power connector or else damage to the power adapter may result. Do
not use an adapter of more than 9 volts at 500 milliamperes or damage to the VLR-100 may result.
4.2 Connecting LTC In and Out
Connect SMPTE LTC from its source to the RCA connector LTC IN. In Reader operation, the VLR-100 supplies reshaped LTC
at the LTC OUT connector. This output connector is also the source of LTC during LTC generation/translation. In either case,
the LTC output is single-ended at a level of 2-volts peak-to-peak (approximately 0dB). It is compatible with most VCR audio
channel or address track levels for recording LTC.
An internal jumper allows adjustment of the LTC OUT signal risetime. See Section 6 for further details.
4.3 Connecting VITC In and Out
Connect the video source supplying VITC to the BNC connector labeled VITC(
VIDEO
) IN. The VITC(
VIDEO
) IN signal is
directly looped through to the BNC connector labeled VITC(
VIDEO
) OUT. To ensure correct VITC reader operation, this video
loop through must be properly terminated at 75-ohms by using a BNC terminator or connecting the VITC(
VIDEO
) OUT to a
terminating video monitor, VCR, etc. If you are using a Time Base Corrector (TBC) it is usually best that the VLR-100
VITC(
VIDEO
) IN be connected inline with the video input to the TBC.
4.4 Connection Diagrams
Figures 4-1 through 4-4 describe various connection configurations in which the VLR-100 can be used.
Figure 4-1 shows the basic setup for reading LTC and/or VITC.
VIDEO OUT
IN
SOURCE VCR
VLR-100
IN
LTC OUT
OUT
OUT
As Required
To Terminated
Equipment
LTC
VITC
Figure 4-1, Basic VLR-100 LTC/VITC Reader Connections
Adding LTC to a pre-recorded source tape is shown in Figure 4-2. In this application the Source VCR must be able to insert
record (dub) the LTC so that the pre-recorded audio and video signals are not disturbed. Note that the LTC to be added can be
manually preset or can be translated from any VITC that currently resides on the source tape.