HP 181A manual Power is removed from the counter

Chapter 8 HP 53181A Specifications

General Information

General Information

Save and Recall:	Up to 20 complete instrument setups may be saved and recalled later. These setups are retained when
	power is removed from the counter.
Rack Dimensions (HxWxD):	88.5 mm x 212.6 mm x 348.3 mm
Weight:	3.5 kg maximum
	AC Line Supply	DC Supply (Option 002 Only)
Power Supply Voltage:	100 to 120 VAC ±10% - 50, 60 or 400 Hz ±10%	10 to 32 VDC, 3-pin male XLR connector
	220 to 240 VAC ±10% - 50 or 60 Hz ±10%
	AC Line Voltage Selection: Automatic	Option 002 may not be ordered with Option 060
Power Requirements:	170 VA maximum (30 W typical)	4A initial inrush at 10 VDC
		3A max, once stabilized
Operating Environment:	0° C to 55° C
Storage Environment:	–40° C to 71° C
Remote Interface:	HP-IB (IEEE 488.1-1987, IEEE 488.2-1987)
HP-IB Interface Capabilities:	SH1, AH1, T5, TE0, L4, LE0, SR1, RL1, PP0, DC1, DT1, C0, E2
Remote Programming Language:	SCPI-1992.0 (Standard Commands for Programmable Instruments)
Safety:	Designed in compliance with IEC 1010-1, UL 3111-1 (draft), CAN/CSA 1010.1
EMC:	CISPR-11, EN50082-1, IEC 801-2, -3, -4
	Electrostatic Discharge and Fast Transient/Burst Immunity Testing: When the product is operated at
	maximum sensitivity (20 mVrms) and tested with 8kV AD according to IEC801-2 or with 1kV power line
	transients according to IEC 801-4, frequency miscounts may occur that will affect measurement data
	made during these disturbances.
	Radiated Immunity Testing: When the product is operated at maximum sensitivity (20 mVrms) and tested
	at 3 V/m according to IEC 801-3, external 100 to 200 MHz electric fields may cause frequency miscounts.
RS-232C:	The rear-panel RS-232 connector is a 9-pin connector (DB-9, male). You can connect the universal
	counter to any terminal or printer with a properly configured DTE connector (DB-25). You can use a
	standard interface cable (HP part number 24542G or 24542H). Data is “output only”; the instrument can
	not be programmed via the RS-232 interface.

8

Note on Pin 4:

1 2 3 4 5

6 7 8 9

May be used as either a DTR signal or an indication of measurement in-limit as configured by the Utility menu. When used as an in-limit indicator, the signal will be high for every measurement within the user set limits.

Pin Number	Type	Description
2	Input	Receive Data (RxD) (for Xon/Xoff only)
3	Output	Transmit Data (TxD)
4	Output	Data Terminal Ready (DTR)
		Measurement In-Limit Signal
5	—	Signal Ground
6	Input	Data Set Ready (DSR)
*	All other pins: no connection

Assembly-Level Service Guide 8-11