TB 9-4931-489-50
resistance standards with resistance measuring system.
Required balances shall be within computed control
Measured difference will be within test reported dif-
limits.
9. Low Value Resistance. Intercompare resistance stan-
ference computed CL's.
11. High Value Resistance. lntercompare multimegohrn
dard below 100 ohms, using oil bath, GUF 9732VT.
resistance standards MIS-10412.
a. Equipment. Resistance Standards (all values below
a. Equipment. Resistance Standard Set, PENN AIR-
100 ohms), Bridge, Kelvin Double Ratio, L&N 4398M,
7907131; Portable Oil Bath, GUF 9732 VT, MIS-10273;
BORNE, and Teraohmmeter, GUF 9520, MIS-10549.
b. Procedure. Intercompare reference and returned
Detector Galvanometers, GUF 9460/9461, 7907452; and
resistance standards with teraohmmeter. Measured dif-
Dc Power Supply, NJE CS36R30, 7907346.
ference will be within test reported difference com-
b. Procedure. Intercompare reference and returned
puted CL's,
resistance standards. Measured difference will be within
test reported difference computed CL's.
12. Ac Voltage. lntercompare thermal transfer standards.
10. Intermediate Value Resistance. Intercompare
a. Equipment. Thermal Transfer Standard, BAL
resistance standards 100 ohms through 100 kilohms.
1600, MIS-10554; Ac Voltage Standard, HP 745A,
a. Equipment. Resistance Standard (values of 100
MIS-10342; and Dc Voltmeter, J-F 887ABAN, P/O
MIS-10216.
ohms through 100 kilohms), Resistance Measuring
System ESI SP2980, MIS-10281.
b. Procedure. Intercompare reference and returned
b. Procedure. Intercompare reference and returned
Thermal Transfer Standards at 50 kHz.
SECTION III
INTERCOMPARISON AND/OR VISUAL INSPECTION
TECHNIQUES AND OPERATIONAL CHECKS
FOR MICROWAVE STANDARDS
Table 2. Standards Requiring Intercomparison and/or Visual Inspection
6
