Tenma 72-6851 & 72-6853 Instruction manual
Note: All voltage and current levels set via the keyboard are displayed on a separate 0.3” 4-digit
display. This entry preview system ensures that the user can observe the value entered before it
is effected thus avoiding possible error. The display is also used for setting additional functions.
When the output switch is on and no other function is selected, the display shows output power in
Watts.
DIGITAL INTERFACES
Operational Functions: Set voltage, set current, set OVP; set output on/off; read output
voltage; read output current; read output power.
RS232:
Variable baud rate, 9600 baud maximum, 9 pin D-connector (female).
Can be controlled as a single instrument or as part of an Addressable
RS232 Chain (ARC).
GPIB:
Conforming with IEEE488.1 and IEEE488.2.
OUTPUT SPECIFICATIONS - REMOTE OPERATION
Output Voltage Setting: 12 bit resolution (10mV steps)
Output Current Setting: 12 bit resolution (10mA steps)
Setting Accuracy:
Voltage: ± (0.1% + 10mV); Current: ± (0.2% + 20mA)
Output Switch:
Electronic by interface command.
Readback Resolution:
Voltage: 10mV over the entire range.
Current: 10mA over the entire range.
Readback Accuracy:
Voltage: ± (0.2% of r 1 digit)
Current: ± (0.5% of r 1 digit)
RESPONSE TIME OVER RS232/GPIB:
Interface:
<15ms (single command, buffer empty).
Power Supply:
An internal time constant, T, (typically 22ms) governs the settling time
of a step voltage increase. Settling time to within 1% of the step
change = 4.6T, to 0.1% = 6.9T, to 0.01% = 9.2T; for example, after a
10V step the output will be within 1 digit (10mV = 0.1%) of its new
value in typically 150ms. For load current of 1 Amp or more, settling
times for downward steps will be very similar; however, response
times will be longer at low loads.
GENERAL
AC Input Voltage:
115V AC ±14%, 50/60Hz. Installation Category II.
Power Consumption:
700VA max.
Operating Range:
5°C to +40°C, 20% to 80% RH.
Storage Range:
−
40°C to +70°C.
Environmental:
Indoor use at altitudes up to 2000m, Pollution Degree 2.
Size:
200 x 140 x 350mm (W x H x D); half rack width x 3U height;
(optional rack mounting kit available).
Weight: 5.5kg.
Safety:
Complies with IEC 1010-1
EMC:
Complies with EN50081-1 and EN50082-1
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