1-10. DESCRIPTION OF ELECTRONIC STATION (cont)
In general, the electronic station consists of a two-bay cabinet and the
following rack mounted electrical/electronic assemblies:
Temperature control unit 1A1 (alternate:
Control unit assembly 1A1)
488 controller power supply 1A2
Programmable power supply 1A3
DC power supply 1A4
AC control panel 1A5
Photomultiplier tube (PMT) controller 1A7
Disk/tape drive 1A1O
Digital computer 1A11
Cable entry panel 1A13
Cable entry panel 1A14
Description of these items follow in reference designation order beginning with
(1) The two-bay (steel) cabinet is centered on, and secured to, an electrical
equipment steel base with four mounting bolts.
Located at the bottom of each single
equipment rack bay is a blower assembly that forces air up and around the
electrical/ electronic chassis assemblies and out through louvered openings at the
top of the cabinet.
(2) Assemblies 1A1, 1A2, 1A3, 1A4, 1A9, 1A1O, and 1A11 are individual slide
mounted rack assemblies.
Assemblies 1A5, 1A6, 1A7, and 1A12 are mounted to
equipment mounting channels.
Cable assemblies, cable carriers, cable mounting
hardware, circuit card assemblies (CCAs), equipment rear Panel controls and
and ground leads are accessible from the rear of the cabinet through
left or right cabinet doors.
All of the slide mounted electronic assemblies are
secured to rack mounting channels.
Electrical cables that mate with each slide
mounted electronic assembly are secured to retracting cable carriers.
assembly is pulled out, the cable and carrier arm extend with the assembly. A
chain, attached between the cable carrier and the back panel of each chassis
assembly, prevents tension on electrical cable connections.
When the slide mounted
electronic assembly is removed, the cable carrier and cable assemblies retract to
the rear of the cabinet.
(3) Cable entry panels 1A13 and 1A14 located on the rear of the electronic
station provide power and signal distribution. Input power is 115v, 60 Hz
Eight ground terminal bonding positions 1A1E1 thru 1A1E8 provide
chassis and cabinet grounding against shock hazard.