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OPERATING AND SERVICE MANUAL
SPECIAL SUPPLEMENT
11683A OPTION H01
POWER METER RANGE CALIBRATOR
11683- 90010
Model Number: 11683A Option H01
Part Number: 11683- 90010
Date Printed: June 5, 2012
2 11683A Option H01 Operating and Service Manual
Description..................................................................................................................................................4
Specifications .............................................................................................................................................4
Operation.....................................................................................................................................................4
Performance Test.......................................................................................................................................5
Replacement Parts ....................................................................................................................................6
11683A Option H01 Operating and Service Manual 3
Description
The 11683A Option H01 is a standard 11683A range calibrator that has been modified so
that it will operate with either the Internal DC- Reference source, or an external
programmable DC- Reference source.
NOTE: Note that the 11683AZ Option H01 is equivalent to the 11683A Option H01. When ordering this
product, you will need to order 11683AZ Option H01 instead of 11638A Option H01.
Specifications
External DC Reference is the same as the Internal Reference.
Operation
The 11683A Option H01 Range Calibrator allows a user to select either an internal or an
external DC- Reference source. With the REF SELECT switch in the INT position, the range
calibrator is operating manually with the Internal DC- Reference source. With the
REF SELECT switch in the EXT position, the range calibrator can be programmed remotely
with a programmable DC source. In this mode of operation, the REF SELECT switch
disconnects the internal DC source, and connects the external DC source to the sampling
gate assembly (A3).
In all other respects, the 11683A Option H01 operates the same as the standard 11683A.
The typical input voltages corresponding to the different range settings are:
Range Volts
100 mW 15.800 V
30 mW 4.7121 V
10 mW 1.4641V
1 mW 145.00 mV
3 mW 458.00 mV
300 W 45.837 mV
100 W 14.494 mV
30 W 4.5832 mV
10 W 1.4501 mV
3 W 458.69 V
The above calculated voltages for range 100 mW to 300 W are based on the table shown on
page 7 of the 11683A Operating and Service Manual (11683- 90014). The remaining voltages
are based in the voltage divider circuit (A1), and the input resistance (A1R1, A3A1U1R1 and
A3R1), of the sampling gate assembly shown on page 21 of the 11683A Operating and
Service Manual (11683- 90014).
All voltage calculations assume that the internal reference voltage has adjusted to
145.00 mVDC, with the range switch set at 1 mW position.
4 11683A Option H01 Operating and Service Manual
Performance Test
Internal DC Reference
With REF SELECT switch in INT position, range switch performance can be tested as
described in page 7 (paragraphs 38