VXI EX7000 - Manual (Page 23)

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EX7000 Series Basic Operation 23
EX72SF
The EX7SF enclosure , shown in Figure 1-2,can accommodate a large number and various types
of Agilent latching switch modules. The upper six switch mounting locations, designated SW1 to
SW6, are designed for SPDT switches. The lower six switch mounting locations, designated SW7
to SW12, are designed for SP4T, SP6T, and transfer switches.
The following table provides the switch model choices for these sections:
VTI M ODEL D ESCRIPTION A GILENT M ODEL N UMBER
SPDT (SW 1 – 6)
7202-20 SPDT, 20 GHz 8765B
7202-26 SPDT, 26 GHz 8765C
7202-20T SPDT, T, 20 GHz 8762B
7202-26T SPDT, T, 26 GHz 8762C
87202-20T SPDT, T, EL, 20 GHz N1810TL - 020
87202-26T SPDT, T, EL, 26 GHz N1810TL - 026
SP4T (SW7-12)
7204-20 SP4T, 20 GHz L7204B
7204-26 SP4T, 26 GHz L7204C
7204-20T SP4T, T, 20 GHz L7104B
7204-26T SP4T, T, 26 GHz L7104C
87204-20T SP4T, T, EL, 20 GHz 87104B
87204-26T SP4T, T, EL, 26 GHz 87104C
SP6T (SW7-12)
7206-20 SP6T, 20 GHz L7206B
7206-26 SP6T, 26 GHz L7206C
7206-20T SP6T, T, 20 GHz L7106B
7206-26T SP6T, T, 26 GHz L7106C
87206-20T SP6T, T, EL, 20 GHz 87106B
87206-26T SP6T, T, EL, 26 GHz 87106C
Transfer (SW7-12)
7222-26 Transfer, 26 GHz L7222C
87222-26 Transfer, EL, 26 GHz 87222C
T ABLE 3-2: EX72SF S WITCH M ODULES
The SPDT switches are mounted on special carriers for installation into the EX72SF and are
delivered this way if ordered separately from the factory. The SP4T and SP6T switches mount
directly in the lower openings and do not require any special carriers. The transfer switches do not
have the same square mounting plate as the multi-throw switches so they require a special carrier
for mounting in the lower round openings.
NOTE Before proceeding with the removal and/or installation of any microwave switch modules in an
EX7000, turn the ac power switch to the OFF position and remove the ac power cord.
To remove a SPDT switch from the enclosure, simply remove the two pan head Philips screws
from each side of the individual switch faceplate. Remove the faceplate and slide the switch
forward until it is away from the enclosure and far enough out to expose the white plastic 8-pin in-
line connector. Firmly grasp each end of the white plastic body, squeezing the release tab on the
enclosure side and pull until the two parts separate.
NOTE The new switch modules must have the cable assembly with the white plastic multi-pin connector
installed in order for it to interface with the internal control circuitry. All replacement or add-on
relays supplied by VTI Microwave will have this cable in place. Contact VTI Microwave
immediately if your switch module arrives without this cable assembly as well as the universal
mounting carrier installed.