Q: What is the operating temperature range of the Tech9 Model 7107 DPM?
A: The standard commercial range is 0o C to 70o C (32o F to 158o F)

Q: How accurate is the voltage meter?
A: +0.1 f.s., or +1 count, whichever is greater.

Q: How do I interface with the DPM?
A: There are three standard interface cables that can be ordered

1. SIP-to-Ribbon cable cut to length (you specify from 6” to 36”). The user end of the ribbon cable is left un-terminated to accept any termination as needed for the application.

2. SIP-to-Ribbon (item A) terminated with 2 rows x 5 pin header (female) 0.1“ centers.

3. SIP-to-Ribbon (item A) terminated with 14-pin DIP header (male). These cable assemblies are listed under accessories on the price list. As an alternative, the 10-pin header on the DPM will accept wire wrap.

Q: What is the power Consumption of the DPM?
A: Maximum power consumption is less than 1 Watt (150 mA), mostly into the LED displays, depending on the number being displayed. The 7107 DPM chip is the industry standard, operating on 5V DC power. Its 0.5V “ripple” rejection means that normal power variations have virtually no effect on the DPM.

Q: What is the “common mode rejection” of the 7107?
A: The Model 7107 measures the voltage difference between in-Hi (pin 3) and in-Low (pin 4), with over 50 dB common mode rejection (almost 1000 to 1).

Q: How can I move the decimal point?
A: The DPM uses a 10-pin connector (see diagram on datasheet). You select one of three pins (pin A, B or C) that controls the position of the decimal point. Simply connect it to the ground pin (pin E) of the DPM.

Q: How do I use the “Hold” function?
A: Another pin has been designated to control the “Hold” function. Connecting it to ground (pin E) causes the last number displayed to be held. This number is held until the ground is removed. You may use an external timer or switch to control the duration of the “Hold”.