KI-1981A MRC7600—Installation, Programming and Operations Manual
Page 13 of 48 (06/30/98)
Telecenter
®
V and 21: Tip/Ring Interface
Please observe the following procedure during installation (see drawing 3,
immediately below; or see Appendix B for a large-format copy):
LDP (Laser Disk), VCR, and/or CDI Installation
1.
Use a standard 12 volt LLM port (TCV only) or a standard SLC3 or SLC4 port (TC21
only).
2.
Install the MR200 chassis in the video rack within the 20 foot (LDP) or 10 foot
(VCR/CDI) available cable range. A regulated 12 VDC, 1.0 Amp power supply (e.g.
PS12) is required to power 10 MRCs.
3.
Set slide switch “S1” to the T/R position.
4.
Set DIP Switch “S4” as follows:
¾
Position 1 selects line voltage: up for 48V, down for 12V.
¾
Position 2 selects ring voltage: up for TCV (90 VAC) ring, down for TC21 (-12 VDC)
ring.
¾
Positions 3-6 are unused.
16.
Insert the MRC7601 into its assigned chassis slot. Connect power, Tip and Ring.
Correct Tip/Ring polarity are essential for TC21 only.
17.
Connect a straight DB9 cable (Male-Female) from the MRC7601 to your PC, and
program the unit per instructions in this manual (see section 3, below).
18.
Select from either or both of the next two steps (7a or 7b), depending upon individual
system set up; then continue with step 8 for all device configuration.
7a. (for LDPs only) Connect the MRC7695 LDP cable from MRC7601 (DB9) to the LDP
(DB15); set the DIP switches on the back of the LDP to provide 4800 baud (see drawing 3,
immediately below).
7b. (for VCRs/CDIs only) Plug the IR emitter cable into the jack on the MRC7601. Attach the
IR emitter head to the VCR face directly over the sensor. Apply the foam pad overlay and
adhesive backed foam cover (both provided).
19.
Program the Telecenter
®
system as required by the TCV or TC21 programming
manual.
¾
On power up, the front panel LED will flash the version number, pause, and then the
sub-version number.
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