A.
2
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4
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Cable length for RS-232C transmission will vary according to the baud
rates selected. For maximum transmission rate of 9600 baud, a cable
length of less than 100 feet must be used. The capaci tance of the
cable must be less than 5000 picofarads. The essential parameter is
the signal risetime which must be less than 1/2 the bit width so that
the sampled signal will be correct.
Each time the baud rate is halved the allowable risetime doubles and
the acceptable cable capacitance doubles. Therefore, 4800 baud can be
transmitted over 200 feet; 2400 baud will work at 400 feet.
A. 2.lS
Remote Device Option Installation
TO A VOID PERSONAL INJ U RY F ROM ELE CTRI C SHO CK DO NOT REMOVE
I NS T R U MENT COVE R S O R PE RFORM ANY M AINTENAN CE OTH E R THAN
D E S C R I BE D IN THIS INS T R U CTION MAN UAL.
INSTA LLATION AN D
MAINTE"
NANCE PROCE DURES DES CRIBED HERE ARE TO BE PERFORMED BY
QUALIFIED SERVICE PERSONNEL ONLY.
TO A VOI D D AMAGE TO CI R C UIT RY, T U RN A C POWE R OFF WHILE
P LUGGIN G IN OR REMOVIN G CIR C UIT CARDS .
Installation of remote device options involves plugging in the GPIB
circuit card (ESI PiN 46114) or the RS-232C Interface circuit card
(ESI PiN 52674).
The remote device circuit card may be plugged into either J4 or J5
(Figure A-12).
Jl, J2 and J3 are not used.
All empty circuit card
slots should be covered with the jumper wires provided.
e
I
s Ii
A - 26
2150/2160 5/85
Summary of Contents for VideoBridge 2150
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