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PM6685R

Universal Frequency Counter Rubidium Frequency Counter Calibrator

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PM 6685

PM 6685R

Universal Frequency Counter

Rubidium Frequency

Counter Calibrator

Technical Data

Cal lab performance you can

take anywhere

Cal lab performance in the field

The PM 6685 frequency

counter from Fluke brings cal

lab accuracy to field

measurements. With 10 digits

per second, plus overflow

(displays 11th and 12th digits),

it delivers high-accuracy

measurements instantly. The

PM 6685 is easy to use,

compact and - most important

of all - it has today's smartest

input triggering for frequency

measurements. The battery

option for the PM 6685

maintains oven stability for 20

hours, giving you instant oven

performance even after long

transportation.

PM 6685

• 300 MHz basic input range;

options for 1.3 GHz or 2.7 GHz

• Ultra High Stability Oven: up

to 5 x 10-9 within 10 min

• Battery supply in combination

with Ultra High Stability Oven

for On-Site calibration

Displays 10 digits in a second

•• Smart AUTO trigger eliminates

guesswork, provides error-

free measurements

• Analog Bar Graph displays

signal strength and input

sensitivity to assist instrument

setup and RF tuning

applications

• Nulling function lets you use

any value as input reference

• Digit blanking function to

eliminate distracting or

insignificant digits in your

readings

• Connect-and-go convenience

for testbench and field use

Optional IEEE-488 (SCPI)

interface

GSM Network operators

Depending on the cellular radio

system network operators and

the internal procedures and

budgets, the calibration

requirement can be fulfilled

with the following solutions

from Fluke.

• PM6685 with the Ultra-High-

Stability oven oscillator in the

small housing with or without

battery supply to check base

stations, offering a low initial

cost-effective solution

(6 month calibration interval

for a margin of 3x better than

GSM specification)

• PM6685R Rubidium

Frequency Counter/Calibrator,

to check base stations,

providing low cost of

1

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