The ME-26D measures AC voltages from approximately 50 mv to 300 volts rms at

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frequencies from 20 Hz to 700 MHz (different for other versions of ME -26's). The

TEMOD item measures AC voltages from 10 mv to 750 volts rms at frequencies

from 20 Hz to 50 kHz (3 dB bandwidth is 200 kHz). With RF probe, TEMOD item

measures voltages from 100 kHz to 500 MHz with an input level from 0.25 volts to

30 volts rms. Where the TEMOD i tems measurement capabilities do not satisfy the

users measurement requirements, units should retain the ME -26. In all other cases

where the TEMOD item satisfies the measurement requirement, the ME -26 should

be removed from the field. Only known applications where problems have been

reported is when the ME -26 is used to support the AN/GRC-106 and AN/GRC-50.

The ME-30 measures voltages from approximately 100 v to 300 volts rms at

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frequencies from 10 Hz to 4 MHz. The TEMOD item measures voltages from 10

mV to 750 volts rms at frequencies from 20 Hz to 50 KHz (3 dB bandwidth is 200

kHz). With RF probe, TEMOD item measures voltages from 100 kHz to 500 MHz

with an input level from 0.25 volts to 30 volts rms. Where the TEMOD items

measurement capabilities do not satisfy the users measurement requirements units

should retain the ME -30. In all other cases where the TEMOD item satisfies the

measurement requirement the ME -30 will be removed from the field.

The TS-585 measures power from 0.2 milliwatts to 5 watts or -10 to +37 dBm with

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a variable input impedance from 2.5 to 20,000 ohms. The TEMOD item measures

dBm referenced to only 15 selectable impedances: 50, 75, 93, 110, 125, 135, 150,

250, 300, 500, 600, 800, 900, 1000 and 1200 ohms. Output is not displayed in

watts. In applications that require a variable input impedance, the AN/USM-486

does not replace the TS-585.

This item is a Hewlett Packard Model 410C. It can measure dc voltages to 1500

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volts; ac voltages of 0.5 to 300 volts from 20 Hz to 700 MHz. The AN/USM-486 can

measure dc voltages to 1000 volts; ac voltages to 750 volts from 20 Hz to 50 kHz

(3 dB bandwidth is 200 kHz). With an RF probe, it can measure voltages from 100

kHz to 500 MHz with an input level from 0.25 volts to 30 volts rms. Use AN/USM-

486 where the additional measurement capabilities of the HP 410C are not

required. Otherwise, retain HP 410C.

This item is a Simpson Model 269 analog volt-ohm -ampere meter. It can measure

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DC voltages to 4000 volts, AC voltages to 800 volts, and DC current to 8 amps .

The AN/USM-486 can measure DC voltages to 6000 volts with high voltage probe,

AC voltages to 750 volts, and DC current to 2 amps. Use the AN/USM-486 where

the additional AC voltage and DC current capabilities of the AN/USM-123 are not

required. Otherwise, retain the AN/USM-123.

This item is a Simpson model 260 analog volt-ohm -ampere meter. It can measure

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DC voltage to 5000 volts, AC voltage to 5000 volts, DC current to 10 Amps and

-20 to +4.9 dBm. The AN/USM-486 can measure DC voltages to 6000 volts with

high voltage probe, AC voltages to 750 volts, and DC current to 2 amps. Use the

AN/USM-486 where the additional AC voltage, DC current and decibels

measurement capabilities of the ME -450 are not required. Otherwise, retain the

ME-450.