Specifications

20 QB Series Operation Manual
* Recommended ASTM Class 4.
5.1 RS-232C Specifications
The QB Series may be equipped with an optional RS-232C feature (PN 42174), which is compatible for
communication with printers and computers. When the balance is connected directly to a printer, displayed data
can be output either via the
P key on the balance, or automatically when certain conditions have been met. Refer
to Table 4-1 on page 15 for a list of parameters available.
NOTE: The optional battery pack (PN 42169) cannot be used simultaneously with the RS-232C option.
5.1.1 Pin Function
Figure 5-1. RS-232 Connector Schematic
Shipping weight
(lb)
1.27 1.59
Admissable RH% 80% RH (Non-condensing; max)
Admissable
ambient temp
0° - 40° C
32° - 104° F
Calibration
method
Semi-automatic, external calibration with reference weight
Calibration mass
(g)*
150 300 600 620 1500 3000 6000 6200 12000
Power 115/230 VAC (via AC adapter) 50/60 Hz
Accessories
included
115 VAC adapter, operating instructions, in-use cover
Pin Number Signal Output/Input Function
1Tare Input External tare input (1)
2 DTR Output High level with scale power ON
3 RXD Input Receiving data
4 TXD Output Transmission data
5 GND N/A Signal ground
Table 5-2. RS-232C Pin Function
Unit of Measure
(Display Symbol) QB-150E QB-300E QB-600E QB-620E QB-1500E QB-3000E QB-6000E QB-6200E QB-12KE
Table 5-1. Model Specific Data (Continued)
Printer
side
Balance
side
Pin 1
Pin 4
Pin 2
Pin 5
Pin 3
NOTE: Printer side of connector
to show correct pin number
orientation.