Options; Introduction; Option 02; System Design Directions - Tektronix TM 506A Instruction Manual

Introduction

Option 02 provides rear interface connections at the rear
panel and Option 10 provides rack mounting capabilities.
Information on Option 02 is found below. Information on
Option 10 is provided in Section 2 of this manual, and at the
end of the Replaceable Mechanical Parts List.

Option 02

This option adds 25-mil square pin connectors to the rear
of the interconnecting jacks at all pins from 14A and B to
pins 28A and B. This option also adds six bnc connectors
and one 50-pin connector to the rear panel. These connec ­
tors are not prewired. Prepared jumpers, coaxial cables,
square pins, and interconnection jack barriers are included
in the kit.

System Design Directions

1. Plan the plug-in location in the mainframe based on
operator convenience as well as interface connections.
2. Plan the wiring between interconnecting jacks and to
the rear panel connectors before starting assembly. A mat ­
ing rear panel 50-pin connector and cover are provided for
external cabling.
There are no pin assignments for the rear panel con ­
nectors, due to the great variety of possible
connections.
When high frequency or fast digital signals are in ­
volved, plan the wiring to minimize crosstalk. Make
allowance for possible auxiliary ground connections.
The 50-pin rear panel connector may be easier to con ­
nect if it is removed from the rear panel and re ­
mounted after connections are made. Remove the top
rear cabinet piece for ease of access.
If more than 50 pins are needed, an AMP HD-22 se ­
ries connector with 104 pins may be mounted in the
same cut out. It is suggested that these parts be ob ­
tained directly from AMP Inc., Harrisburg, PA or their
distributors. For further application information, con ­
tact Tektronix TM 500 Marketing Group.

OPTIONS

NOTE
3. Pin assignments for individual plug-ins will be found in
the appropriate instruction manual.
4. Install an interconnection jack barrier at the appropri ­
ate location on the interconnection jack. Refer to operating
instructions for keying assignments for family functions.
5. Select and install the wires (hook-up or coaxial cable)
following the guidelines in the Wire Use part of these
instructions.
6. Wires or cables which may be at large potential differ ­
ences should be dressed or bundled so as to avoid contact.
Keep all interface wiring away from the power module pri ­
mary line wiring.
Maximum input voltage is ^60 Vdc or ^42.4 Vdc
peak-to-peak. Limit input power to < 150 W total for
Option 02.

Wire Use

1. Hook up wire with square pin receptacles on both
ends. These may be used for low frequency or de circuits
where impedance levels and crosstalk are not a problem.
The wire is supplied for connection between compartments
(adjacent or nonadjacent) or between a compartment and
the rear panel. For connection to the rear panel, cut to
length then tin and solder the end going to the rear panel
connector.
2. Coaxial wire with square pin receptacles on both
ends. These are used for connections which require shield ­
ing or which must maintain a 50 Q characteristic impedance.
The outer conductor should be connected to either chassis
ground or circuit ground. Plug-in lines which require coaxial
leads usually have a specified ground pin assignment. If
necessary, establish auxiliary ground connections at the ap ­
propriate wire ends. The coaxial wire is supplied for connec ­
tion between compartments (adjacent or nonadjacent) or
between a compartment and the rear panel. For connection
to the rear panel, cut to length then tin and solder the end
going to the rear panel connector.
Section 4 — TM 506A
4-1