TM 11-6625-214-12
b. The transit case is watertight and is
(3) One hexagonal socket wrench for use
when removal of the klystron becomes necessary. This
supplied for transporting and storing the AN/URM62(*),
wrench is also stowed within the AN/URM-52(*).
video cable, power cable, rf cables and spare klystron
grid contact springs. Each transit case consists of a
case and a removable watertight cover. Although all
1-9.
Differences Between Models
cases serve the same basic function, they differ in
All models of the AN/URM-52(*) are functionally
construction.
identical. There are minor differences mechanically and
(1) Transit
Case
CY-2109/URM-2A
electrically but the signal generators may be used
(supplied with the AN/URM-52A), utilizes heavy sponge
interchangeably.
rubber shockmounts to protect the signal generator when
a. Signal Generators TS-21A/U, TS-621B/U,
it is in the case. The accessory cables and cords are
and TS-621C/U are identical except for certain
stored in the bottom of the case.
mechanical and electrical design improvements.
(2) Transit Case CY-1294/U is supplied
(1) The tube complement for TS-621C/U
with the AN/URM-52.
is the same as that for the TS-21B/U except for the
(3) Transit Case CY4306/URM62B is
following in the TS-621C/U:
supplied with the ANfURM-2B. Construction variations
V102, V106, and V108 are 5726/6AL5W
include recessed handles, straps for securing cables and
V103, V104, V106, V107, V109, V111, and V115 are
cords in the bottom of the case and other minor
5814A
variations.
V110 is 5727/2D21W
c. Cables and Cords. The cables and cords
V301, V305, and V307 are 5R4WGA
supplied with the AN/URM-52(*) are:
(2) In the TS-621C/U, two normal blowing
(1) RF Cable CG-92D/U (6'00) is supplied
fuses rated 3.0 amperes are used instead of the 3.2
with the TS-621/U, TS-621A/U and TS-621B/U. This
ampere slow-blow fuses in the TS-A62lU and TS-
cable is used to couple the super-high frequency output
621B/U.
of the signal generator to the external load. It consists of
b. Forced air cooling is not required for the
6 feet of RG-9A/U coaxial cable terminated at each end
SG- 557/U. The blower has been eliminated from the
with a UG21D/U connector. RF Cable CG-92EIU (6'00)
is supplied with the TS-21C/U and the S-557/U. This
use of heat dissipating tube shields on the electron
cable is identical with RF Cable CG-92D/U except that it
tubes, however, the equipment must be located so that
consists of RG-9B/U coaxial cable.
the louvers are clear and free to allow adequate air
(2) Video Cord CG409/U (8'0") is supplied
with the TS-621/U, TS-621A/U and TS-621B/U. Video
Cord CG409D/U (8'0) is supplied with the TS- 621C/U
1-10.
Tabulated Data
and the SG557/U. These cords are used for connecting
a. Types of Rf Output.
synchronizing and modulating pulses to the BNC
Continuous wave unmodulated output
connector on the front panel of the signal generator.
Internally modulated output
Each CG-409/U cord consists of 8 feet of RG58/U cable
terminated at each end with UG88 connectors. The
Rectangular rf out-
CGC409DU cords are identical with the others except for
the RG /8ClU cable and UG- 88E/U connectors used.
Pulsed rf output
(3) Power Cable CX-337? (6'00 is
pulses--------
Frequency 40 to 4000 pps,
supplied with the TS-621/U. CX-8/U is a 2-wire cable
pulse width 0.5 to 10.0 us.
terminated in a 2-contact male and female plugs. Power
Sawtooth rf output
Cable CX-3135/U (6'0') is supplied with the TS-621A/U
pulses -------- Rate 40 to 4, 000
and TS-621B/U. Power Cable CX-3136/U (8'0') is
Externally modulated
supplied with the TS-I6C/U and the SC-557/U and is a 3-
output:
wire cable terminated in 3contact plugs.
Pulses or square
d. Accessories.
wave rf output--
Amplitude 15-70 volts,
(1) Two spare klystron grid contact springs
pulse duration 0.5 to 250
are supplied with the AN/URM-52 and AN/URM-52A for
us, separation period 1.0
use when replacement of the klystron becomes
to 250 us.
necessary. These are carried in the transit case.
Frequency modu-
(2) Four Allen wrenches, for use when
lated rf output
developed from externally
maintenance of the equipment becomes necessary, is
applied sine wave or saw-
supplied with the AN/URM-52A. Five Allen wrenches are
tooth modulation volt-
supplied with the AN/URM-52B. These are stowed within
the instrument.
1-2