QuadTech 1657 RLC Digibridge, Instruction Manual

Page: 2 / 57

These two supplementary pages contain information of improvements or modifications not
documented in the current manual. All references to GenRad in the manual now apply to
QuadTech, Inc.
Page -Specifications (Power & Mechanical)
Power should be 90 -250V AC, 50 -60 Hz. Voltage switching is automatic and no
longer selected by rear panel switch. 60 Watts maximum.
Weight should be 10 lbs. (4.5 kg) net, 15 lbs. (6.8 kg) shipping.
Environment reads, Altitude < 2000m, Installation Category 1, Pollution Degree 1
Page - Table of Contents (Parts List and Diagrams -Section 6)
Power supply board (1657-4720) layout and diagram (page 6-13) replaced by Power
supply assembly part number 700011 (no diagrams, repair by module exchange)
Page 1-4 -Figure 1-2, Rear Panel Controls and Connectors
Rear view should show new power supply assembly (PN 700011) without line-voltage
switch.
Page 1-4 -Table 1-2, Rear Panel Connectors and Controls
Ref No. 2R -& Fuse is 6/10A, 250V, 3AG Type, Slow Blow. Replace only with
the same type and rating. To replace, remove fuse drawer by pressing up on release tab.
Ref No. 3R -Line-voltage switch has been deleted, power input is from 90 -250V AC
Page 1-4 -Table 1-3, Accessories
A quantity of two spare fuses are supplied, 6/10A, 250V, 3AG Type, Slow Blow
(QuadTech part number 5330-1100)
Page 2-1 -Safety Inspection
Before operating the instrument inspect the power inlet module on the rear of the unit to
ensure that the properly rated fuse is in place , otherwise damage to unit is possible. Fuse is
6/l0A, 250V, 3AG Type, Slow Blow.
The 1657 is shipped with a standard U.S. power cord, QuadTech PN 4200-0300 (with Belden
SPH-386 socket or equivalent, and 3 wire plug confonning to IEC 320) or an approved
international cord set. Make sure the instrument is only used with these or other approved
international cord sets, which ensures the instrument is provided with connection to protective
earth ground.
In all installations the instrument should be positioned with consideration for ample air flow to the
side and rear panel ventilation holes. An open space around the instrument of at least 3 inches
(75mm) is recommend. The surrounding environment should be free from excessive dust to
prevent contatnination of electronic circuits.