Equipment information
Keithley 427 Amplifier
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Model:
427
Date:
1975
Category:
Group:
Description:
Current Amplifier
Information
GENERAL
The model 427 Current Amplifier is a high-speed,
feedback-type Amplifier with particular features useful for
automated semiconductor testing, mass spectrometry, and gas
chromatography applications.
FEATURES.
a. Wide Dynamic Range. Selectable rise times permit
low-noise operation important when resolving small current
levels.
b. High Speed. Typical resolution is 20 picoamperes out of a
10⁻⁸ ampere signal with a 100 microsecond rise time.
c. Built-in Current Suppression. Small changes in the signal
level can be measured since large ambient current levels can
be easily suppressed.
d. Overload Indication. Accurate measurements are assured
since overloads are automatically indicated.
e. Variable Gain. The GAIN Switch is designated in eight
gain positions from 10⁴ to 10¹¹ volts per ampere - therefore
gain adjustment is straight forward.
f. Variable Rise Time. Optimum response can be selected for
each gain setting since a separate RISE TIME switch is
provided on the front panel.
Manual Type:
Service Manual
Pages:
47
Size:
2.00 Mbytes (2095471 Bytes)
Language:
english
Revision:
Manual-ID:
29103
Date:
1975 01 01
Quality:
Scanned document, all readable.
Upload date:
2018 08 23
MD5:
088fbadd6dbec7b7fbbb5f66d479b13e
Downloads:
446
Information
SPECIFICATIONS
— ... iv
1. GENERAL DESCRIPTION ... — — 1
2. OPERATION ... 4
3. APPLICATIONS ... ... 9
4.
ACCESSORIES ... 10
5. CIRCUIT
DESCRIPTION ... 12
6. REPLACEABLE
PARTS- ... ... 17
7 •
CALIBRATION ... 26
SCHEMATICS ... 33
Manual Type:
Service and User Manual
Pages:
47
Size:
3.27 Mbytes (3428964 Bytes)
Language:
english
Revision:
Manual-ID:
29103
Date:
Quality:
Scanned document, reading partly badly, partly not readable.
Upload date:
2012 05 31
MD5:
f4f7bd42be0c2c47be6b1f63f0a76a17
Downloads:
785