Model 7705 Control Module Instructions for use with DAQ6510
8
077144900 / April 2018
Operation
Before installing or removing a 7705 switching module, make sure the DAQ6510 power is
turned off and disconnected from line power. Failure to comply may result in incorrect
operation and loss of data in 7705 memory.
To prevent overheating or damage to the 7705 switching module relays, never exceed the
following maximum signal levels between any two inputs or chassis: Channels 1 to 40:
300 VDC or 300 V
RMS
(425 V
PEAK
) for AC waveforms, 2 A switched, 60 W, 125 VA.
Refer to the instrument documentation for operating instructions.
This switching module does not support current measurements. If the instrument has the TERMINALS switch
set to REAR and you are working with the slot that contains this switching module, the AC , DC , and digitize
current functions are not available. You can measure current using the front panel or using another slot that
contains a switching module that supports the AC , DC , and digitize current measurements.
If you use remote commands to attempt to measure current when configuring a channel, an error is returned.
Reactive loads
To prevent damage to the module, do not exceed the maximum signal level specifications of
the module. For reactive loads, be sure to use voltage clamping and current surge limiting.
The 7705 operation is specified for resistive loads, Refer to
Typical connections
(on page 5). Reactive loads
require voltage clamping for inductive loads and current surge limiting for capacitive loads to prevent damage to
the relays and to external circuitry.
Factory service
To return the switching module to Keithley Instruments for repair:
▪
Call the Repair Department at 1-800-833-9200 or send an email to
for a
Return Material Authorization (RMA) number.
▪
Carefully pack the instrument in the original packing carton.
▪
Write
ATTENTION REPAIR DEPARTMENT
and the RMA number on the shipping label.
