Model: AN/USM-326A

Digital Reado Electronic Counter

Properties:

Overall Length
19.000 inches
Wattage Rating In Watts
50.0
Overall Height
6.000 inches
Overall Width
19.000 inches
Current Type
Ac
Frequency Rating
Between 50.0 hertz and 400.0 hertz
Joint Electronics Type Designation System Item Name
Counter, electronic digital readout
Joint Electronics Type Designation System Item Type Number
An/usm-326a
Internal Battery Accommodation
Not included
Voltage Rating
115.0 volts or 230.0 volts
Output Frequency Rating
Between 1.0 megahertz and 10.0 megahertz
Electrical Connection Quantity
9
Unpackaged Unit Weight
40.000 pounds
Mounting Method
Bench
Measurement Type
Frequency
Frequency Range
+0.000/+500.000 megahertz
Accuracy Rating
Stable to 3 parts in 10e-9/day
Internal Calibration Feature
Included
Display Type
Light emitting diode
Display Digit Quantity
9
Display Units Indicator
Included
Display Positioned Decimal Point
Provided
Display Storage Facility
Not included
Remote Control Provisions
Not included
Solid State Feature
Included
Inclosure Material And Location
Metal body
Plug-in Units Provision
Not included
Standard Frequency Output Feature
Included
Phase
Single
Functional Classification
Aa-6.3
Functional Description
C2 channel environmentalized counter/timer. Eleven operating modes including frequency burst measurements. Direct counting to 110mhz prescaled to 550mhz. Timing measurements 100nanosec to 10e9 sec
Reference Data And Literature
To 33a1-5-435-4
Special Test Features
Mil-t-21200 class 2; mil-t-28800 type 1, class 2
Test Data Document
81349-mil-t-21200 specification (includes engineering type bulletins, brochures, etc., that reflect specification type data in specification format; excludes commercial catalogs, industry directories, and similar trade publications, reflecting general type data on certain environmental and performance requirements and test conditions that are shown as "typical", "average", "", etc.). And 81349-mil-t-28800 specification (includes engineering type bulletins, brochures, etc., that reflect specification type data in specification format; excludes commercial catalogs, industry directories, and similar trade publications, reflecting general type data on certain environmental and performance requirements and test conditions that are shown as "typical", "average", "", etc.).
NSN
6625-01-039-0467
Part Number
AN/USM-326A
Description
Counter,electronic,digital Reado
CAGE
80058

An instrument used to count the frequency of recurrent electronic events and display the count on the panel of the instrument in numeric form. May also include facilities for a readout printed on tape. May include facilities for a very accurate output which can be used as a secondary transfer standard. It can be used to measure frequency, period, time interval, phase angle, frequency ratio, and for multiple period averaging. See also counter, electronic, digital and indicator, digital display.

Part AN/USM-326A NSN 6625-01-039-0467

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
26835
FIIG:
T297-A
Concept No.:
App. Key:
AA
Cond. Code:
1
Status:
A

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators
HMIC
PMIC
ESD/EMI
ENAC
MMAC
CRITL
HMIC:
P
PMIC:
A
ESD:
ESD:
MMAC:
RH
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
31.0 X 28.0 X 15.0
Paclk Weight:
52.5000lbs
Item Weight:
28.5000lbs
Item Dim:
019501900065
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
M
SPI No.:
F000004XF1
SPI Rev.:
SPC Mkg:
00
LVL_A:
LVL_B:

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
061700
UFC:
34580
LTL:
RATING VARIABLE
LCL:
77.5
WCC:
72D
TCC:
Z
SHC:
Q
ACC:
Equipment for Aircraft

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Schedule B and Export
  • Schedule B: 9030908030
  • SITC: 87479
  • End Use: Measuring, testing, control instruments
  • NAICS: 334515
  • USDA: 1

Freight Class: Parts and accessories of articles of schedule b subheading 9030.39

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